FRONTISPIECE 
 
 rar 
 ?VA 
 
 KEGIONS OF DISTRIBUTION 
 
The 
 
 Genus Phoradendron 
 
 fg iff 
 A Monographic Revision 
 
 By WILLIAM TRELEASE 
 PROFESSOR OF BOTANY IN THE UNIVERSITY OF ILLINOIS 
 
 Urbana, Illinois 
 Published by the University 
 
 1916 
 
 I* 
 
COPYRIGHT, 1916 
 
 BY THE 
 
 UNIVERSITY OF 
 
MS 
 
 CONTENTS 
 
 Page 
 Distribution map Frontispiece 
 
 Introduction 
 
 Prefatory 3 
 
 Nomenclature 4 
 
 Historical summary 5 
 
 Analysis of characters 7 
 
 Parasitism, hosts and enemies 13 
 
 Origin of the genus 14 
 
 Range of species 15 
 
 Taxonomic summary 16 
 
 Illustrations 17 
 
 Monograph of Phoradendron 
 
 Generic description 19 
 
 Primary division of the genus 19 
 
 Analysis of the Boreales 
 
 Pauciflorae 20 
 
 Pluriseriales 29 
 
 Calyculatae 54 
 
 Analysis of the Aequatoriales 
 Interruptae 
 
 Foliosae 55 
 
 Basinerviae 55 
 
 Peninerviae 128 
 
 Saquamosae 140 
 
 Parodoxae 142 
 
 Continuae 143 
 
 Percurrentes 143 
 
 Dichotomae 156 
 
 Explanation of plates 163 
 
 Indexes 
 
 Collections 187 
 
 Occurrence 
 
 North America 211 
 
 South America 214 
 
 West Indies 216 
 
 Pacific Islands 217 
 
 Species excluded 217 
 
 Names and synonyms 218 
 
 Plates 1245. 
 
PREFATORY 
 
 INTRODUCTION 
 
 PREFATORY 
 
 My attention was seriously called to the need of a revision of our 
 leafy mistletoes through inability to understand the basis of characteriza- 
 tion that could admit to one species such different appearing plants as 
 those from the southeastern, southwestern and arid United States not 
 to mention California and Yucatan to which the name Phoradendron 
 flavescens is currently applied. Among their manifold differences, a 
 diligent search was made for characters ; the types of related species and 
 varieties that have been held to be differentiable from flavescens were 
 examined ; and every form occurring in the United States was traced to 
 the known limits of its range, sometimes south of our national border. 
 In the course of this study it became apparent that the great conserv- 
 atism of Engelmann, who seems never to have given this genus the care 
 that marked his study of the related genus Arceuthobium or Razoumof- 
 skya, had not only caused him to withdraw segregates of P. flavescens 
 that he admitted at one time, but had reacted on his early colleague in 
 the study of our southwestern plants, Torrey, to the extent of causing 
 a number of mistletoes which had been designated in the Torrey herbar- 
 ium as new species to lie there, as they still do, without publication. As 
 political boundaries do not often form satisfactory limits to such a study 
 as I had begun, I was quickly lured into an examination of the Mexican 
 species which approach our border, and of others which reach into the 
 field of these, so that no arbitrary geographic limit, even, could be fixed 
 short of the Isthmus. 
 
 At the New York meeting of the National Academy of Sciences, in 
 November, 1911, and. at the meeting of the Academy of Science of St. 
 Louis on December 18, 1911, the preliminary results of this study of 
 the northern species were outlined, and this was followed at the Wash- 
 ington meeting of 1912 by presentation to the National Academy of a 
 revision of all of the forms of Plioradendron recognized as occurring in 
 continental North America. As I was then on the eve of departing for 
 a year in the great herbaria of Europe, this revision was withheld from 
 immediate publication so that several obscure Mexican species could be 
 cleared up certainly, through authentic specimens, and in the hope that 
 they might be illustrated from the types. Though the admission of Tor- 
 rey 's long neglected manuscript names had quite prepared me for an 
 apparently inordinate increase in the number of differentiable species 
 in the genus, I was not a little surprised to find, when casting my results 
 
4 THE GENUS PHOEADENDRON 
 
 then into classified form, that on an average nearly two new named forms 
 appeared for each one already admitted to our northern flora. 
 
 Notwithstanding an intention to limit my investigation to the species 
 of continental North America, the temptation to learn the characters of 
 the South American species proved irresistible when, at Brussels, I 
 examined the material in the personal herbarium of von Martius, whose 
 collections have done so much to make known the flora of Brazil; and 
 it was not long before the genus as a whole engaged my interest, though 
 West Indian material was given less attention than the other until at 
 Dahlem I reached the collection of Professor Urban, who in 1897 had 
 published a revision of all of the West Indian Loranthaceae. To my keen 
 satisfaction, I then found that for the Antillean region very few forms 
 were to be differentiated from those admitted by Urban, confirming my 
 judgment that the large increase in our own flora rests rather upon 
 previous neglect of application to them of characters which appear to 
 be really differential, than on excessive optimism on my own part con- 
 cerning their separability. The thorough study of tropical forms by 
 Eichler in his revision of Loranthaceae for the Flora Brasiliensis, in 
 1868, supplemented by a reelaboration of available material when Urban 
 monographed the West Indian forms, has also prevented an increase in 
 the number of South American species at all comparable with that 
 within our own region, though the number of names added is relatively 
 greater than for the Antilles. The general results of the study as now 
 published were laid before the Chicago meeting of the National Acad- 
 emy in 1915, and printed in brief form in the initial number of the 
 Proceedings of the Academy.* 
 
 NOMENCLATURE 
 
 In the following treatment, synonymy has been confined to citation 
 of the original publication of each species and of its synonyms, except 
 for its inclusion in either of the classic publications on the genus and 
 for reference to all published illustrations. No effort has been made to 
 rectify the frequent use of inapplicable or inaccurate names in refer- 
 ences to the plants in periodical literature, or in the earlier floras before 
 Viscum and Phoradendron were differentiated, except in a very few 
 cases where more than one species was clearly referred to under a new 
 name. To anyone needing to make corrections, the way is rendered 
 comparatively clear by the full citation of localities and collectors which 
 follows the description of each species. 
 
 The names employed for the plants are intended to be conformed 
 to the international rules adopted by the Vienna Congress of 1905 
 
 *Trelease. W. Phoradendron. Proe. Nat. Acad. Sci. vol. 1. p. 30-35. Jan. 1915. 
 
NOMENCLATURE HISTORICAL 5 
 
 except that in one or two cases notably that of the plant usually known 
 as P. lati folium the American principle ''once a synonym always a 
 synonym" has led to the adoption of a specific name of more recent 
 origin than that first used when the latter, under Viscum, was preoccu- 
 pied, even though it does not appear elsewhere under Phoradendron; 
 and in two or three instances e. g. what is here called P. Engelmanni 
 a new specific name has been preferred even though an existing or lapsed 
 varietal name might have been used in a specific sense. An embarrassing 
 difficulty is introduced through Professor Urban 's otherwise unimpeach- 
 able publications in the latinization of the customary Greek generic 
 name Phoradendron into Phoradendrum, which compels a monographer 
 to choose between recombining the names of all of Urban 's species under 
 the former or recombining the still larger number of earlier and classic 
 names under the emended generic name. I have felt that of the two 
 regrettable courses the former is preferable; and customary practice 
 retains numerous other generic names with the Greek ending. 
 
 HISTORICAL SUMMARY 
 
 The exclusively American genus Phoradendron was differentiated in 
 1847 from its Old World equivalent, Viscum, by Nuttall, its essential 
 characters being trimerous flowers in simple spikes, with contiguous 
 fruiting sepals, as contrasted with tetramerous solitary or simply cymose 
 flowers and distinctly separate sepals in Viscum. Almost simultaneously 
 with Nuttall, Engelmann recognized the generic separability of these 
 New- and Old-world mistletoes, and segregated the latter under the 
 name Spiciviscum. Before his description was printed in 1849, however, 
 Nuttall's paper had appeared, so that Dr. Gray, to whom Engelmann ' 
 manuscript had been sent, though publishing the name Spiciviscum 
 treated it as a synonym of Phoradendron, and only one species has ever 
 been seriously named Under Engelmann 's proposed genus. 
 
 Except for a few which Humboldt, Bonpland and Kunth had placed 
 in Loranthus, all of the species now referred to Phoradendron which 
 had been published prior to Nuttall's segregation of the genus had 
 been described as species of Viscum, so that, so far as they antedate the 
 appearance of de Candolle's monograph of Loranthaceae in the Prod- 
 romus, they were brought into position under Viscum in that work. 
 Nuttall himself named a number of these as pertaining to his new genus 
 and indicated clearly that this was probably equally true of most if 
 not all of the American species of Viscum. Apparently unacquainted 
 with the publications of Nuttall and Engelmann, Miers in 1851 sug- 
 gested that the South American species of Viscum, with anthers dehis- 
 cent by slits, were not cogeneric with the European species, the anthers 
 
6 THE GENUS PHORADENDRON 
 
 of which dehisce by numerous pores, and for the former he proposed 
 the name Allobium; but under this no species have ever been named. 
 
 Antedating Nuttall's publication of Phoradendron by seven years, 
 the name Castrea falcata A. St. Hil. (or Castraea as Eichler writes it) 
 is to be accounted for, as Castrea has been held to be a synonym of 
 Plioradendron. The publication is of an unfortunate kind. Treating 
 of the stamen in his Legons de Botanique comprenant principalement 
 la morphologic vegetale, Auguste de Saint Hilaire in 1840 says (p. 451) 
 "Comme on voulait absolument trouver dans toutes les plantes des 
 etamines, ou du moins des antheres, on a dit que le Viscum album avait 
 une anthere adnee au petale (anth. adnata) : mais, pour qu'il en fut 
 anisi, il faudrait qu'il y eut tout a la fois petale et anthere, et ici il 
 n'existe reellement qu' une corolle (f. 334) dont la substance s'est, a 
 de petits intervalles, changee en pollen de maniere a faire paraitre 
 alveolee la surface interieure des petales. II y a plus encore : dans une 
 plante bresilienne de la meme famille que le Viscum album, plante ou 
 trois petales sont soudes a leur base, je cherchais vainement les etamines, 
 lors que je m'apergus que le pollen etait niche dans un pore qui se trouve 
 a P extremite pointu de chaque petale (Castrea falcata, f. 335) ; et, par 
 consequent, ici bien plus clairement encore que dans le Viscum, c'est le 
 petale qui tient lieu d' etamine, ou, pour mieux dire, une tres-petite 
 portion de la substance interieure du petale s'est changee en pollen. 
 Dans les etamines ordinaires, le metamorphose est plus complete: voila 
 la difference." Again, on page 873, explaining the illustration on his 
 plate 88, the writer says "dans le Viscum album, fig. 334, la substance 
 de tout le petale se metamorphose par intervalles en poussiere f econdante, 
 de maniere a faire paraitre alveolee la surface superieure du petale ; 
 chez le Castrea falcata, fig. 335, une tres-petite portion de la substance 
 dn petale s'est changee en pollen, et celui-ci se trouve niche dans un 
 petit trou qui existe au sommet de chacune des trois parties de la 
 corolle." In the index of plant names at the end of his volume, Castrea 
 falcata is marked definitely as of the author by the attachment of his 
 initials "ASH". 
 
 It is scarcely probable that any botanist will ever consider the genus 
 Castrea sufficiently characterized on such a description of its stamens 
 to enter seriously into nomenclature, and no material is known to exist 
 by which the species referred to as falcata may be ascertained. 
 
 Still earlier, in 1839, Korthals had segregated these American mistle- 
 toes under the sectional name Baratostachys without removing them 
 from the genus Viscum, and so late as 1910 Baratostachys was accorded 
 generic rank by Uphof, a procedure not likely to meet with acceptance 
 under existing nomenclatorial practice. 
 
 The principal contributions to our knowledge of the genus in recent 
 
CHARACTEES HABIT 7 
 
 times are by Oliver, who determined the Mexican and Central American 
 collections of Liebmann and Oersted ; by Eichler, who took note of extra- 
 territorial forms when revising the Loranthaceae of Brazil; and by 
 Urban, who rendered a similar service in connection with his study of 
 the family as represented in the West Indies. 
 
 ANALYSIS OF CHARACTERS 
 
 A few contrasts may make evident some of the differences between 
 species in this genus which may be accepted as characters in their tax- 
 onomy. The partial or complete neglect of these characters, to the pref- 
 erence of the more usually employed differences in shape of foliage, 
 etc., explains the insufficiency of such earlier treatment as that of the 
 elder de Candolle in his very clean-cut elaboration of Viscum in the 
 Prodromus, in 1830, and accounts for the confusion of our own species 
 by the usually very accurate and acute Engelmann; and their tacit or 
 explicit recognition underlies the masterly work of Eichler and Urban 
 in revisions respectively of Brazilian and West Indian forms. That 
 these differences have been neglected so generally depends rather on 
 their seeming insignificance than on difficulty in seeing them. 
 
 COLOR. How generally the color of normally vegetating mistletoes 
 offers differential characters remains to be recorded. As is true of all 
 of the species of the related genus Arceuthobium or Razoumofskya, a 
 number of the species of Phoradendron that grow on conifers, e. g. P. 
 juniperinum, P. densum, etc.,' are of an olive or brownish shade, the 
 West Indian P. flavens gets its name from a very striking yellow color- 
 ation, and some of the mistletoes that reach our market at Christmas 
 time, e. g. P. macrophyllum, possess a very beautiful golden coloring, 
 perhaps as the result of a partial etiolation after collection; but the 
 prevailing color appears to be green, more or less dulled or shaded by a 
 tinge of gray or olive. 
 
 HABIT. No doubt personal familiarity in the field with the different 
 species of Plwradendron will reveal several differences in aspect that 
 cannot now be used in their characterization, for even limited acquaint- 
 ance with them in nature shows that they are far from uniform in 
 habit of growth. For the present, however, it can be said only that in 
 this respect most species of Phoradendron resemble the common Euro- 
 pean Viscum in their bunched tufts, so that a winter picture of either 
 may easily be mistaken for that of the other (PI. 1). A marked excep- 
 tion is found in some of the desert mistletoes, like P. calif ornicum and 
 P, Libocedri (PI. 2), which when seen from a distance sometimes suggest 
 the cactus genus Rhipsalis in their long pendent tufts : and the Mexican 
 P. calyculatum and a few other species form wide-spreading fountain- 
 like masses of still greater size. 
 
8 THE GENUS PHOEADENDEON 
 
 STEM. Though it frequently happens that only one of the two 
 opposed buds at a node develops into a branch, so that a pseudodicho- 
 tomous forking may appear, the greater number of species, including 
 all of those in our own flora, are monopodial or percurrent in their 
 growth ; but a comparison of P. flavens and P. racemosum, for example, 
 among the West Indian species, shows that in the former the percurrent 
 growth is very constant, while in the latter the main axis is so rarely 
 continued that forking, or, through accessory development, fasciculation 
 of the stems is all but the universal rule. In P. cymosum and a group 
 of related species the suppression of the main vegetative stem is further 
 accentuated through its replacement by a flowering spike, so that the 
 seeming dichotomy of P. racemosum is here replaced by a cymose forking. 
 
 While all of our own species have a terete or nearly terete stem, 
 squarish in some of the mountain forms, such a species as P. vernicosum 
 presents the phenomenon of its compression into an elliptical cross sec- 
 tion below the nodes ; in P. carneum, etc. it is sharply 2- keeled : in P. 
 peruvianum, etc., it is convexly sword-shaped, and it becomes 2- winged 
 in P. dipterum or even very thin and broad in P. platycaulon. P. rubrum 
 and many other species have a comparable sword-like compression 
 accompanied by a rhombic keeling of the broad surface, with extremes 
 from little to marked widening reaching its culmination in the very 
 broadly winged stems of the Mexican species which Hooker mistook for 
 Viscum falcatum (PI. 62, 63). P. trinervium and a number of other 
 tropical species have this rhombic keeling amplified into a sharply and 
 nearly equally 4- angled character, which in P. tetrapterum and a few 
 others develops into a strong and often undulate winging. As a rule 
 these stem peculiarities are most evident on the uppermost internodes 
 of a branch ; sometimes they disappear entirely as the stem ages, or are 
 represented by a faint lining on otherwise nearly or quite terete older 
 internodes: in one species, P. paradoxum, terete-based and ancipital 
 internodes regularly alternate in the branches. 
 
 LEAP. If, as is the case, leaf -form in this genus varies in the same 
 species or even on the same branch so greatly as to prevent its use with 
 precision for the differentiation of closely related forms, and though 
 identical shapes may be presented by the leaves of species not at all 
 related, the foliage of a given species comes with familiarity to present 
 a collective effect that is characteristic so far as it goes. Knowledge of 
 the species when growing is certain to reveal very marked differences 
 in texture, veining, and direction of the leaves which are lost or uncertain 
 in the herbarium; but even in dried specimens many foliage charac- 
 ters may be picked out. In P. Eggersii and a relatively small number 
 of other species, distinct clean cut petioles are found, while in 
 
CHAEACTEBS LEAF 9 
 
 others, like P. affine, the leaves are technically sessile ; but in the greater 
 number the leaf is attenuated into what almost equally well may be 
 called a winged petiole or a subsessile base. In one group only, that of 
 P. amplexicaule, the base or petiole is dilated or clasping at its insertion. 
 
 Comparison of two such species as P. flavens and P. racemosum 
 reveals a marked contrast in the position of the principal nerves which 
 are found in all of the larger leaves in this genus, the former being 
 distinctly basinerved, and the latter pinnately veined. Occasionally, as 
 in P. chrysocladon, the stronger of the nerves in one of the former group 
 gives off a few fine or indistinct lateral veins : in P. Eggersii, P. peruvi- 
 anum and a few others the midrib, strong and heavily branched below, 
 disappears below the middle of the leaf; and in a very few cases the 
 vascular group of the petiole continues for a short distance into the 
 expanded blade before breaking into its component bundles to form the 
 nerves of the leaf. 
 
 Great differences are found in leaf texture and venation, but as a 
 rule species that are closely related differ little in this respect. The 
 terminalogy of such characters when observed in the herbarium is likely 
 to prove misleading when applied to fresh material, but however it 
 may be corrected to suit the latter it will always prove necessary when 
 future collections are compared with the types to which they correspond. 
 As an illustration may be cited our common eastern mistletoe, P. flaves- 
 cens, which possesses rather fleshy leaves with heavy somewhat raised 
 nerves when fresh or wilting, but appears subcoriaceous in the herbar- 
 ium ; while the related P. villosum of the West Coast is rather coriaceous 
 even when fresh. As examples of some of the extremes in this respect 
 shown by herbarium material, may be noted P. undulatum and the 
 aggregate of forms commonly called P. latifolium, in which a heavily 
 raised midrib is seen beneath, while some difficulty may be found in dis- 
 tinguishing its pinnately placed branches: P. robustissimum, in which 
 the nervation is very inconspicuous in the opaque closely papillate 
 leaves: the group of Andean species which I am calling "Andinae", 
 in which the leaf dries thin with sharply raised fine nerves : and P. flavens 
 and its allies, which are finely nerved and venulose and wrinkled above, 
 while beneath they are smooth and dull except for the nerves which 
 project heavily, at least toward the base. How far the fleshiness of 
 both stem and leaf varies in fresh material can be inferred only for 
 most species; but the rugulose upper surface of the leaves in those last 
 mentioned and in the Brazilian P. chrysocladon no doubt will find 
 ready explanation in structure, as will the very heavy wrinkling of the 
 stem in P. fragile and other species and its uniform fine cross-striation 
 in P. Fid and one or two others. 
 
10 THE GENUS PHORADENDRON 
 
 INFLORESCENCE. The essential characters of Phoradendron in its 
 group of Loranthaceous genera are chiefly its axillary spikes of small 
 unisexual and monochlamydeous sessile flowers (PI. 5-6), often sunken 
 in hollows of the frequently swollen internodes of the rachis and nor- 
 mally trimerous (PI. 7), with 2-celled longitudinally dehiscent anthers. 
 A very few species, like P. cymosum, present the phenomenon of a termi- 
 nal spike corresponding to the 1- or few-flowered cyme of the old world 
 Viscum, but in addition to axillary spikes. Except in the species taken 
 by Hooker for falcatum, the receptacular cups, which range from so shal- 
 low as hardly to surround the base of the flower to a depth covering a 
 noticeable part of the mature fruit, are essentially even on their margin ; 
 but in this species the cup is sometimes parted so as to present the ap- 
 pearance of a deeply divided calyx. The flowers, with a small vestigial 
 nectar gland and apparently adapted to pollination by such short- 
 tongued insects as flies and small bees,* are usually yellowish green 
 when, expanded, but in P. Brittonianum and some of its relatives the 
 sepals are blood-red even before anthesis. Some species are known to be 
 apogamoust and apogamy is to be expected in many others, a circum- 
 stance very probably connected, as in Taraxacum and Hieracium, with 
 polymorphism or close affinity in species as now understood. So far as 
 I know, polyembryony, recorded for Viscum and Arceutliobobium or 
 Razoumofskya,$ has not yet been observed in Phoradendron. 
 
 While the number of internodes composing a flowering spike varies 
 in most species it usually varies within small limits, and its mean appears 
 to be available in most cases in the recognition of a species. Contrasts 
 are afforded by P. Libocedri, P. cuneifolium, P. emarginatum, P. flaves- 
 cens, P. polygynum, etc. Sometimes corresponding to the number of 
 joints, sometimes to their length, and sometimes to both, the length of 
 the spike also presents differences of taxonomic value if used not too 
 arbitrarily, e. g., in P. emarginatum, P. flavescens, P. macrotomum, and 
 P. polygynum. In all of our own species the plants are strictly dioe- 
 cious ; and, as a rule, staminate spikes are longer than pistillate and bear 
 more flowers (PI. 5). This is known to be true also of a number of 
 tropical species, such as P. Wattii; in others, prevailingly if not exclu- 
 sively staminate and pistillate spikes showing something of the same 
 dimorphism occur monoeciously on the same plant. Though usually not 
 too closely applicable as between related species, the number and 
 
 *Honey and pollen are said to be gathered from some species: Richter, Bull. 
 217, Calif. Exper. Sta. Sholl, Bull. 102, Texas Exper. Sta. The staminate flowers 
 of P. villosum are said to have the odor of pond lilies, by Piper and Beattie, Flora 
 of the Northwest Coast, p. 124. 
 
 tC/. York, Bot. Gaz. vol. 56. p. 201. 
 
 \Cf. Weir, Phytopathology, vol. 4. p. 385. 
 
CHAEACTEES INFLOEESCENCE, FBUIT 11 
 
 arrangement of the flowers on a given spike present equally charac- 
 teristic differences, but with the qualification that flowers of the upper- 
 most joints may be fewer in number and simpler in grouping than be- 
 low, while one or two of the lowest joints may be partly or entirely with- 
 out flowers, the lowermost almost universally being reduced to a sterile 
 peduncle. The greater number of tropical species differ from those of the 
 north in being androgynous through the occurrence of a number of 
 staminate flowers on spike- joints that are otherwise pistillate, or, less 
 commonly and sometimes differentiated by the term "gynandrous", 
 through the occurrence of a few pistillate flowers on otherwise staminate 
 joints, as many of Eichler's accurately drawn plates show very beauti- 
 fully. Except in a broad way, these differences do not appear to be 
 practically applicable in contrasting species, though representing in part 
 morphological differences of fundamental taxonomic value. 
 
 The prevailing grouping of the flowers is in 2, 4, or 6 series on each 
 joint of the spike, i. e., in 1, 2, or 3 ranks over each of the two scales by 
 which it is subtended. Examples of the first and last are given by P. 
 laxiflorum (2), and P. flavescens (6), and where the joints are unisexual 
 these numbers commonly prevail, though four series may be found by 
 reduction and as many as ten by increase when the number is typically 
 six. When the joints are androgynous, the staminate flowers often occur 
 at top between the normal ranks over each scale, and this condition is 
 usually accentuated on luxuriant spikes and sometimes on all by the 
 downward intrusion of a partial or complete third series over each scale. 
 For the separation of the groups into which species fall, I have found it 
 most convenient to use the prevalence of 2 or 6 series of flowers on the 
 joint as a differential, providing as an intermediate the prevalence of 
 the interjected two series under the designation 4-4- 2. A glance at P. 
 domingense (2), P. trinervium (4 or 4+2), P. hexastichum (6) and P. 
 TAndavianum (6 to 10) will make these distinctions evident, more than 
 6 ranks being very unusual except in some tropical species with leaves 
 venulose above and dull beneath, and in some of our northern forms. 
 
 FRUIT. Unfortunately the mature fresh fruit of few species is suf- 
 ficiently well known to make its description satisfactorily possible, and 
 species that are now widely separated or brought into juxtaposition may 
 come to rest elsewhere when subjected to the test of this character. The 
 mistletoes with which we are acquainted in our eastern woods or which 
 come to our Christmas market owe their attractiveness to translucent 
 white berries (PI. 24), sometimes shaded greenish yellow or creamy, 
 a color often changing in drying for the herbarium into a sometimes 
 seemingly glaucous blue-black, as appears to be the case with such of the 
 tropical species as have clear white fruit. In contrast, the desert mistle- 
 toes, P. calif ornicum, and its conifer-inhabiting allies (PL 4), produce 
 honey- or straw-colored berries, more or less tinged with red, and such 
 
12 THE GENUS PHOEADENDRON 
 
 tropical species as P. chrysocarpum, said to have white or yellow berries 
 when fresh, have the fruit represented in the herbarium with a dull 
 leathery looking surface, the epidermal cells of which have a brassy glint 
 as on other young parts of these plants. The pulpy red berries of P. 
 rubrum, more or less blackened when dry, are distinctly reticulate under 
 a lens by the outlines of their small epidermal cells, and if, as in P. com- 
 mutatum, these are convex, a velvety-dullness is imparted by them to 
 the surface. P. emarginatum and its allies, as well as P. Eggersii and 
 a few other tropical species, have the surface of the fruit distinctly 
 warty : such warts may be more or less confluent into wrinkles, and in 
 P. Grisebachianum the pulp becomes very deeply wrinkled. This sug- 
 gests a range of characters as yet to be made out with sufficient certainty 
 for safe application as differential. Another fruit character that will 
 doubtless prove of much taxonomic value should be derived from the 
 seed and its investing coat of fibres (PI. 10), between which and the 
 outer skin lies the mass of viscid pulp for which mistletoes have long 
 been known : in shape and size this appears to differ considerably when 
 different species are compared, but its utilization must rest on compara- 
 tive study of the mature fruits of many species. In most species the 
 ripe fruit is globose, often varying into ellipsoid as in some of our south- 
 ern mistletoes, or egg-shaped, as in P. chrysocarpum, depressed and 
 elongated modifications of these forms being frequent. Sometimes, but 
 it is hard to tell how constantly or characteristically, a short neck with 
 sub-parallel sides is noticeable, as in P. calif ornicum (PI. 8). Rarely, 
 as in P. acinacifolium and its allies, the fruit is distinctly elongated, the 
 ellipsoid or ovoid fruits of other groups being not much longer than thick , 
 and in P. trinervium, which ultimately has nearly globose berries, the 
 partly matured fruit is similarly lengthened. Usually the berries are 
 glabrous, but in some of our western species they or their sepals are 
 somewhat hairy ; and P. Robinsonii, P. Palmeri, and a few other tropical 
 species, have retrorsely hirsute berries. When the fruit of P. villosum 
 is compared with that of P. flavescens, the sepals with which the berry 
 is crowned are seen to be ascending and somewhat separated in the 
 former, but closely inflexed and meeting in the latter, a difference 
 observable everywhere, the erect or widely parted sepals of such species 
 as P. acinacifolium, P. trinervium and P. Eggersii being especially 
 noticeable (PI. 8, 9). 
 
 SCALES. One of the characters most available and significant in the 
 classification of the species of PTioradendron is a fundamental difference 
 in their leaves. By far the larger number of species have unmistakable 
 foliage, but our western group to which P. calif ornicum and P. juniper- 
 inum belong have their leaves reduced to short thin scales (PI. 4) which 
 resemble those of the related genus Arceuthobium or Razoumofskya so 
 
CHARACTEES SCALES, CATAPHYLS 13 
 
 closely that species of either genus are commonly to be found in herbaria 
 as representative of the other. Unlike typical foliage leaves, these scales 
 do not disarticulate, though a constriction at the base of the scales in 
 two forms (PL 3) affords partial ground for their specific recognition: 
 one species of the Mexican mountains, P. minutifolium, has almost 
 equally small if fleshy disarticulating leaves: and two of the South 
 American species, P. tunaeforme and P. fragile, are characterized by 
 bearing small scale-like leaves only, a character also encountered in 
 the related genus Dendrophtlwra. 
 
 CATAPHYLS. If any species of the United States, for example P. 
 Eatoni of the everglades of Florida, is compared with any West Indian 
 or South American species, for example P. rubrum of the Bahamas, the 
 latter will be found to possess constantly in addition to its foliage one 
 or more pairs of scale-leaves at least on the lowermost joint of every 
 branch. Comparable with the scales of the flowering spikes and with 
 the stem-scales of P. juniperinum etc., these cataphyls afford by their 
 presence or absence what proves to be one of the most important char- 
 acters for the primary division of the genus Phoradendron. Usually 
 cataphyls do not subtend flowers or spikes, apparently serving no func- 
 tion further than the protection they may afford the shoot in its earliest 
 development; but in P. crassifolium and P. craspedophllum spikes are 
 regularly and characteristically found in the axils of some of the cata- 
 phyls, and less characteristically in a few other cases. 
 
 Never found in any species of the United States, absent from three- 
 fourths of those of Mexico and Central America, but invariably present 
 in all of the South American and West Indian species, these scales are 
 usually confined when present to the basal joint of each branch, though 
 in cases of true or cymose forking they are found on all joints since 
 only basal joints are then present. In a very small percentage, only, 
 of the tropical species with percurrent or monopodial branching, e. g. 
 P. flavens and P. crassifolium and their allies, cataphyls are found on 
 all foliage internodes ; and in a single known species, P. paradoxum, the 
 stem is made up of rather terete joints with cataphyls and ancipital 
 joints without them, in regular alternating succession. 
 
 PARASITISM, HOSTS AND ENEMIES 
 
 All of the species of PJioradendron are parasitic. In the rather few 
 cases in which they are considered as noxious parasites interest centers 
 about the trees on which they occur, though their fruit is said to be 
 poisonous*. Unfortunately the hosts of a very large part of the tropical 
 
 *Cf. Bray, W. L. The mistletoe pest in the southwest. Bull. no. 166, Bur. PI. 
 Industry, U. S. Dep. Agr. 1910. Hedgcock, G. G. Notes on some diseases of trees 
 in our national forests. V. Phytopathology, vol. 5. p. 175-181. June 1915. Pam- 
 mel, Manual of poisonous plants, p. 106, 415-6, 836. f. 196. 
 
14 THE GENUS PHORADENDKON 
 
 species remain to be noted and observers and collectors who interest 
 themselves in the genus in the future will do well to pay particular atten- 
 tion to this point. 
 
 So far as I know, none of the representatives of this genus attack 
 either tree ferns or Monocotyledons, and relatively few are found on 
 Conifers : the majority affect woody Dicotyledons. Though sometimes, 
 as in the case of our common mistletoe P. flavescens, occurring on a num- 
 ber of unrelated hosts, most of the species appear to be restricted in 
 this respect, though to what extent is to be shown, rather than inferred 
 from the scanty information now at hand. The oak, known in connec- 
 tion with the European mistletoe rather from its infrequency as a host 
 than because it is often seen to support the parasite, is one of the most 
 frequently attacked trees on our own continent except in the Northeast ; 
 and in the Southwest the sycamore, mesquite, cottonwood, hackberry 
 and elm are much parasitised. Though the European Viscum sometimes 
 occurs on Conifers, these trees, which support the related genus Arceutho- 
 bium or Razoumofskya in abundance, appear to be attacked by only a 
 limited number of species of Phoradendron which constitute a well- 
 limited group, the ' ' Pauciflorae, " and this group is strictly confined to 
 Conifers except for one species, P. calif ornicum, which affects a variety 
 of Angiosperms but no Gymnosperms, and P. Bolleanum which, in addi- 
 tion to coniferous hosts, has been collected on Arbutus. The succulent 
 Cactaceae support one species, P. Kuntzei. 
 
 Secondary parasitism is not at all unknown in the genus, though re- 
 stricted to its tropical species, one group of which, the ' ' Amplectentes, ' ' 
 exhibits this trait markedly. Except when they serve as hosts for other 
 mistletoes, the Phoradendrons do not appear to suffer much from the 
 attacks of parasites. I have seen a single collection (P. antttlarum) 
 in which a mistletoe was overgrown by Cuscuta. Few fungi are known 
 for them even when dead ;* and the number of insects known to attack 
 them is very limited,! though some southwestern collections are badly 
 infested by scale insects. 
 
 ORIGIN OF THE GENUS 
 
 Questions as to the origin of families like the Loranthaceae are doubly 
 difficult because complicated by parasitism and attendant reduction. Of 
 a group of families with little-differentiated ovules and seeds which Van 
 Tieghem has brought together under the name " Inseminees, " the Loran- 
 thaceae give every indication of tropical Asiatic origin, and the family 
 
 *Cf. Saceardo, Sylloge Fungorum, host index. The related genus Arceuiholium 
 is likewise free from fungi. Cf. Weir, Journ. Agr. Eesearch. vol. 4. p. 369. 
 }Cf. Schwarz, Proc. Entomol. Soc. Washington, vol. 4. p. 397. 
 
OEIGIN EANGE OF SPECIES 15 
 
 extends around the earth in the warmer zones, reaching well toward the 
 limits of the cool-temperate latitudes in both hemispheres. Increasing 
 knowledge of its forms has gradually led not only to the segregation of as 
 markedly different genera as Viscum and Plioradendron, Loranthus and 
 Psittacanthus, etc., but to recognition that nearly all of the genera are 
 exclusively either of the New World or of the Old World the most 
 marked exception being the small and simple genus Arceuthobium or 
 Razoumofskya, with American, European and Asiatic species. 
 
 These facts point to anything but a recent migration of American 
 and European stocks from the original center of distribution; at the 
 same time they do not point to a very ancient origin for our own genera. 
 Perhaps because of their very common occurrence in upland regions 
 though P. flavescens, for instance, may be found in the greatest abun- 
 dance on trees in swamps or river bottoms and even more because of 
 their generally fleshy substance with relatively little lignification, our 
 mistletoes have scarcely left fossil remains, one Tertiary species, only, 
 P. fosstte of Ecuador, being recorded as thus far recognized in the genus 
 Phoradendron. Everything considered, the genus may be regarded as 
 probably of late Tertiary origin in the New World. When and where 
 on this continent its two primary subdivisions came into existence will 
 make a fascinating subject for future study. 
 
 RANGE OF SPECIES 
 
 In the geographic distribution of its species, Plioradendron is rather 
 unusually instructive. The genus is strictly American and extends from 
 Washington, Southern Colorado, the mouth of the Ohio River and South- 
 ern New Jersey to the mouth of the La Plata on the continent, and 
 through the entire West Indian chain : one species occurs in the Pacific 
 island Guadalupe, and two are found in the Galapagos group of Pacific 
 islands both oceanic but with American floras. None of its many spe- 
 cies of fairly homogeneous character possesses a very wide geographic 
 range. Marked examples of wide-spread occurrence are afforded only 
 by such polymorphous species as what is usually called P. latifolium, or 
 an assemblage of intricately related if differentiable species like that 
 usually known as P. rubrum or P. quadrangular e, which range from 
 Brazil to Central Mexico and well through the West Indies. Few spe- 
 cies, indeed, equal in absolute range our native P. flavescens, which occurs 
 from southern New Jersey to the lower Wabash, Oklahoma and eastern 
 Texas, reaching southeast to the gulf and ocean. 
 
 Admirably endowed with mea,ns of free dissemination through their 
 berries with extremely viscid pulp, which leads to their dispersal by 
 birds, these mistletoes seem limited nevertheless to a surprising extent by 
 
16 THE GENUS PHOEADENDEON 
 
 ordinary barriers to plant migration.* Like the similar European 
 Viscum album, with its scarce-definable races capable of effective germ- 
 ination only on the host-species from which the seed came, our eastern 
 P. flavescens though attacking a large variety of plants is usually found 
 confined to a single host in a given region, and such experiments as have 
 been made on it show that it can be transferred from one host to another 
 with difficulty if at all. How far this may be concerned in the poly- 
 morphism of this species and how far its like may serve to limit the 
 dispersal of most species, is at present a matter of conjecture only. 
 
 Viewed on broad geographic lines, the species of Phoradendron usu- 
 ally occupy areas that present severally an assemblage of fairly uniform 
 meteorologic features with limiting environment, in this respect agree- 
 ing with most other plants and with animals. The regions in which the 
 species of Plwradendron occur or which, like the great valleys of South 
 America, separate them, are indicated on the accompanying map. Few 
 species range throughout any one of these regions, and it is very rare 
 for a species to reach from one into the other. 
 
 TAXONOMIC SUMMARY 
 
 Briefly summarized, the purely taxonomic part of my study of the 
 genus leads to the conclusion that Phoradendron may be best divided 
 into two primary groups, respectively constantly without and constantly 
 with cataphyls on their foliage shoots : for the first I am using the name 
 Boreales since its species alone are represented in the north ; and for the 
 other, Aequatoriales since only its species are found in the equatorial 
 region. Species destitute of expanded foliage are found in each group 
 in small numbers. Those of the first group are pubescent for the most 
 part, while only two of the second group are more than papillately rough- 
 ened. The Boreales appear to be strictly dioecious; the Aequatoriales 
 for the most part, though not exclusively, are monoecious, usually with 
 some or all of their spikes androgynous. 
 
 So far as shown by the material now contained in the great herbaria 
 at Washington, New York, St. Louis, Brussels, (where von Martius' per- 
 sonal herbarium is), Copenhagen, Kew, Munich (where von Martius' 
 official collection is), Geneva, Buda Pest, Prag and Dahlem, and in many 
 smaller collections, I find a total of 277 differentiate forms of which I 
 regard 240 as species, and of which 66, or 23 per cent., are of the Boreales 
 and 211, or 77 per cent., are of the Aequatoriales. 
 
 The distribution of the main groups (forms which occur in more than 
 
 *Hedgeock believes light to be a very important factor in determining their 
 spreading, Journ. Wash. Acad. vol. 3. p. 265 ; and Viscum is known to need light for 
 germination. 
 
TAXONOMIC SUMMARY ILLUSTRATIONS 17 
 
 one region being included in each) is : Boreales : Total 66 ; United States 
 28; Mexico 48; Central America 2; West Indies 0; South America 0. 
 Aequatoriales : Total 211 ; United States ; Mexico 29 ; Central America 
 20 ; West Indies 38 ; South America 134. 
 
 Of the Boreales 41, or two-thirds, and of the Aequatoriales 87, or two- 
 fifths, are now characterized as new. A very large percentage of the 
 forms that have been accorded specific rank by earlier writers are still 
 kept up even though they had passed into synonymy. Later studies, 
 especially in the field, in the light of the conclusions now reached, may 
 be looked to with confidence not only to bring to recognition many spe- 
 cies not yet collected, but to make possible the trustworthy subordina- 
 tion or merging of some of the forms that are now held for species. As 
 my study has proceeded, I have had the satisfaction of finding my own 
 opinion in accord with the view of a number of the most experienced 
 systematists, that in a monographic assemblage such as is here offered 
 no lasting harm can come from the most radical segregation of forms 
 possible on morphologic and geographic considerations, while on the other 
 hand a blending of widely dissociated forms or of such as differ greatly 
 in their extremes though without as yet definable breaks in the series, 
 e.g. P. piperoides, leaves the work to be taken up once more from the 
 very foundation, and with reference to all of the original materials that 
 may have survived. 
 
 ILLUSTRATIONS 
 
 To any one who has ever wished to compare an American mistletoe 
 with an authentic illustration, it has become evident at once that such 
 illustrations scarcely exist apart from the superb plates on which Eichler 
 figured many of the Brazilian species. It has been my aim to picture 
 the more essential features of every species without alteration of size, by 
 aid of the camera, and if possible from type specimens not only of the 
 species as accepted but of forms which have been given names that have 
 passed into synonymy. That every species has been figured, and that 
 scarcely a half-dozen types, even of synonyms, are unpictured, may be 
 my excuse for adding that words are lacking to express adequately my 
 gratitude to the many botanists of Europe and North America who have 
 opened their collections to me without restrictions, and in some cases 
 have allowed type material to follow me across the Atlantic or have re- 
 placed photographs which were unsatisfactory in the first instance. That 
 the manuscript now completed for publication pictures for the first time 
 237, or nine-tenths, of the recognized forms, shows more clearly my debt 
 to these friends than can be stated in any other words. 
 
 The University of Illinois, 
 January, 1, 1916. 
 
PEIMARY DIVISION 19 
 
 MONOGRAPH OF PHORADENDRON 
 
 GENERIC DESCRIPTION 
 
 Parasitic more or less fleshy suffruticose perennial exogens, usually 
 brittle at the nodes. Leaves opposite, usually petioled or petiolately 
 contracted, in a few species reduced to scales. Inflorescence of axillary 
 or sometimes also terminal mostly several- jointed spikes. Flowers sessile, 
 usually sunken in the rachis, in 1 or usually 2 to 3 or occasionally 5 
 series over each of the opposite scales in which the joint below ends, 
 small and inconspicuous, apetalous, dioecious or monoecious, 3- or occa- 
 sionally 2-, 4-, or 5- merous: sepals distinct, deltoid, valvate, persistent 
 on the fruit: stamens inserted on the base of the sepals with nearly 
 sessile 2- celled anthers dehiscing by subapical slits or pores: ovary in- 
 ferior, 1- celled, 1- ovuled: style short with scarcely dilated terminal 
 stigma. Fruit baccate, with a single albuminous seed surrounded by a 
 loosely fibrous endocarp and an extremely viscid mesocarp. Phoraden- 
 dron Nuttall, Journ. Acad. Philadelphia, ser. 2. vol. 1. p. 185. 1847. 
 Spiciviscum Engelmann in Gray, Mem. Amer. Acad. n. s. vol. 4. p. 58. 
 1849. Allobium Miers, Ann. & Mag. Nat. Hist. ser. 2. vol. 8. p. 178-9. 
 1851. Baratostachys Uphof, Pflanzengattungen. p. 173. 1910. 
 
 PRIMARY DIVISION OF THE GENUS 
 
 Without cataphyllary scales. BOREALES. 
 
 With cataphyls at least on the basal internode of each branch. 
 
 AEQUATORIALES. 
 
 I. BOREALES. 
 
 Stems without cataphyls or scales toward the base of the branches, 
 never dichotomous though sometimes with one lateral branch developed 
 so as nearly or quite to equal the main axis, scarcely ever sharply 
 angled or 2-edged. Spikes axillary, never terminal. Flowers dioecious, 
 the staminate and pistillate spikes often dissimilar. Confined to conti- 
 nental North America; characteristic of the northern Mexican table- 
 land and the southern and western United States, only two species 
 reaching into Central America. 
 
 Branches never winged : receptacular cups not lacerate. 
 
 Pistillate flowers 2 on each joint. Chiefly on conifers. PAUCIFLORAE. 
 Pistillate flowers 6 or more on each joint. PLURISERIALES. 
 
20 THE GENUS PHORADENDRON 
 
 Branches broadly winged: receptacular cups often cleft into sepal-like 
 segments : pistillate flowers numerous. CALYCULATAE. 
 
 A. PAUCIFLORAE. 
 
 Stems not winged. Spikes short, 1- to 4-jointed, each joint with 2 
 opposite flowers when pistillate or with 4 8 or 12 flowers in 4 or 6 
 series when staminate: receptacular cups not calyx-like. Berries sub- 
 globose, smooth and glabrous, small (3-4 mm.), tinged reddish or straw- 
 colored. Western United States, and Mexico as far as Mt. Orizaba. 
 All except the first species occur on conifers. 
 
 Leaves represented by short thin scales, not disarticulating. 
 
 APHYLLAE. 
 Leafy, or in the first with scale-shaped but disarticulating leaves. 
 
 BOLLEANAE. 
 
 1. APHYLLAE. 
 
 Leaves represented by short thin scales not disarticulating from the 
 stem. Essentially confined to the desert and western mountain region 
 of the United States. Frequently confused by collectors with the Vis- 
 coid genus Arceufhobium. 
 
 Canescent: twigs terete: spikes several- j ointed : sepals meeting in 
 fruit. P. californicum. 
 
 Glabrous : twigs often bluntly squarish : spikes 1-jointed : sepals usually 
 parted in fruit. 
 
 Scales not constricted at base : stout. On Juniperus. 
 
 P. juniperinum. 
 
 Scales obscurely constricted: slender and pendent. On Libocedrus. 
 
 P. Libocedri. 
 Scales constricted as if by a string: compact. On Juniperus. 
 
 -P. ligatum. 
 
 PHORADENDRON CALIFORNICUM Nuttall. 
 
 Phoradendron californicum Nuttall, Journ. Acad. Philadelphia, ser. 2. 
 vol. 1. p. 185. 1848. MacDougal, Publ. Carnegie Inst. no. 99. pi. 60. 
 Not forked, the long slender somewhat reddish branches without 
 cataphyls, dioecious. Internodes short (1-3x10-20 mm.), from softly 
 and closely lanate-canescent becoming glabrous. Stem-scales spread- 
 ing, acute, 2 mm. long. Spikes axillary, mostly solitary, minutely 
 canescent, long for the group (5-10 mm.), with about 4 short joints 2- 
 or exceptionally 4- or 6- flowered in 2 or 4 series : peduncle 1-3 mm. long : 
 scales acute. Fruit red, subglobose, often rostrate, 3 mm. in diameter: 
 sepals nearly or quite meeting. Plates 8, 11. 
 
BOEEALES APHYLLAE 21 
 
 Sonoran region, chiefly on Leguminosae, never on coniferae*, the 
 type of the genus. The type from California. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Without in- 
 dication of host: Sierra Nevada (Nuttall, 1836, the type). Indio 
 (Davy, 45). Without locality (Davidson, 5929}. On Acacia-. San 
 Felipe Canon (Palmer, 441; Chandler, 5456 in part). Cottonwood Springs 
 (Hall, 6014). Mountain Springs (Orcutt, 2013). On Prosopis: Agua 
 Caliente (Parish, 684). Kelso (Jones, 1906). Calexico (Abrams, 3230). 
 On CeanotJms: Banning (Tourney, 1894). On Zizyphus: San Gor- 
 gonio Pass (Engelmann, 1880). On Larrea: Vallecito (Hb. Dept. Agr.). 
 Barstow (Heller, 1896). NEVADA. On Prosopis: Las Vegas ( Jones, 
 1905; Griffiths, 1912). Nelson (Jones, 1907). UTAH. "On juniper" [?] : 
 Milford ( Goodding, 1026). ARIZONA. On Acacia: Williams River 
 (Bigelow, 1853-4). Clifton (Greene, 1880). Tucson (Coville, 1617; 
 Dewey; Griffiths, 3539; Tourney, 1894; Hedgcock & Long, 9814). On 
 Prosopis: Gila River (Gilbert, 1873; Rothrock, 338). Gila Crossing 
 (Thornber, 14 t). Pima Co. (Mearns, 2724). Bowie (Jones, 4242 in 
 part). Beaver Dam (Goodding, 2135, 2139). Oracle (Hedgcock & 
 Long, 9696). On Parkinsonia: Bill Williams Fork (Bigelow, 5 a). 
 Tucson (Pringle, 1884; Tourney, 14, 1894). On Cercidium: Near the 
 Colorado (Bigelow, 5). Tucson (Selkirk, 9816). On Larrea. Bowie 
 (Jones, 4242 in part). Castle Creek (Tourney, 291). Hardyville (Pal- 
 mer, 506). Without indication of host: The Needles (Jones, 1884). 
 Tucson (Lloyd, 1907). Rincon Pass (Griffiths, 2019). Peach Springs 
 (Russell, 1889). Without locality (Bischoff, 1871; Tourney). Santa 
 Rita Mountains (Griffiths & Thornber, 205, a dwarf form, f. 
 nana PI. 12). MEXICO. LOWER CALIFORNIA. Ubi (Brandegee, 1889). 
 Gardner's Laguna (Mearns, 2894). San Felipe Bay (Mac Dougal, 
 1904). On Microrhamnus : SONORA. Guaymas (Palmer, 1065). 
 Pinacate (Lumholtz, 30). Tiburon Island (Rose, 16780). Hermosillo 
 (Brandegee, 1892, a very silvery form, f. argentea). 
 
 Phoradendron californicum distans, n. var. 
 
 Differing from the type in its elongated fruiting spikes (about 
 30 mm.) with distinctly separated whorls of fruit. Plate 13. 
 
 Southern range of the type, into which it probably merges, and 
 on the same hosts. The type from Arizona. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Without local- 
 ity (Bigelow, 1853-4). Indian Wells (Orcutt, 2044). Resting Springs 
 valley (Coville & Funston, 279). Tantillas Canon (Palmer, 270, 441 
 
 *Cf. Hedgcock, Phytopathology, vol. 5. p. 179. 
 
22 THE GENUS PHORADENDRON 
 
 in part). East of San Bernardino (Parry, 1877). NEVADA. Logan 
 (Heller, 10464}. ARIZONA. Gila River (Boundary Survey, 1236). 
 Fort Mojave (Cooper, 1860-61). Yuma (Engelmann & Sargent, 1880; 
 Vasey, 1881; Pringle, 1881 the type; Solereder, 1893). Bonelli's 
 Ferry (Goodding, 725}. Beaver Dam (Jones, 5013). Tucson (Jones, 
 1903; Dewey; Hedgcock & Long, 9815). El Rio (Lemmon, 267). 
 Nogales (Mearns, 2644). West of the Cerro Colorado (Ferriss). 
 Franconia (Jones, 1903). Yucca (Trelease, 1901). NEVADA. Moapa 
 (Jones, 1904). Muddy Valley (Kennedy & Goodding, 57). MEXICO. 
 LOWER CALIFORNIA. San Rafael Valley (Orcutt, 1310). San Gregorio 
 (Brandegee, 1889). Lake Maquata (Orcutt, 2027). Agua Verde 
 (Rose, 16583). SONORA. S. Pedro to Fronteras (Hartman, 945). 
 SINALOA. Navajoa (Rose, Standley & Russell, 13165). Topolobampo 
 (Endlich, 689). 
 
 PHORADENDRON JUNIPERINUM Engelmann. 
 
 Plioradendron juniperinum Engelmann, Mem. Amer. Acad. n. s. vol. 4. 
 p. 58. 1849. 
 
 Not forked, the moderate rather stout somewhat squarish branches 
 without cataphyls, dioecious. Internodes short (2-4x5-10 mm.), micro- 
 scopically granular. Stem scales spreading, deltoid, not constricted at 
 base, 1-2 mm. long. Spikes solitary, very short (3 mm.), glabrous, with 
 a single short joint 2-flowered when pistillate and 6- or 8-flowered when 
 staminate: peduncle scarcely 2 mm. long: scales rather blunt. Fruit 
 straw- or wine-colored, subglobose, 3 mm. in diameter: sepals erect, 
 parted. Plates 2, 3, 4, 14. 
 
 Southern Rocky Mountain or Chihuahuan and adjacent Sonoran 
 regions ( ? exclusively) on Juniperus.* The type from New Mexico. 
 
 Specimens examined: UNITED STATES. COLORADO. Mesa Grande 
 (Purpus, 2). Durango (Tweedy, 596-8; Parsons, 1897). Hotchkiss 
 (Cowen, 1892). Mancos (Baker, Earle & Tracy, 92}. Delta (Hedgcock, 
 9319). UTAH. St. George ( Palmer, 1875, 1877). Tooele Co. (Jones, 
 1900). Antelope Island (Jones, 2081). Kanab (Jones, 6045). East of 
 Gunnison (Ward, 360). Diamond Valley (Goodding, 884). Milford 
 (Goodding, 1026). Ephraim (Hedgcock, 3993). Nephi Mts. (Hedgcock, 
 8136). ARIZONA. Bill Williams Mts. (Bigelow, 6). Camp Apache 
 (Rothrock, 261, 814). Chiricahua Mts. (Rothrock, 6510; Blumer, 1525, 
 1532, 1956, 1990; Burrall, 1127-9). Cariso (Brandegee, 1234). Santa 
 Rita Mts. (Pringle, 1884). Santa Catalina Mts. (Hedgcock & Long, 
 9817). Ft. Huachuca (Wilcox, 1892; Tourney, 1894, 1895). Benson 
 
 *Cf. Hedgcock, Phytopathology, vol. 5. p. 179. 
 
BOEEALES APHYLLAE 23 
 
 (Vtisey, 188]). Moki Reservation (Hough, 18, 87). Graham Co. (Co- 
 ville, 1946) . Williams (Tourney, 292}. San Francisco Mts. (Sitgreaves, 
 1851, -a dwarf, slender form, f. nana-Pl. 14; Knowlton, 188; Tourney, 
 1894). Flagstaff (MacDougal, 142). Grand Canon (Seler, 4731; Hedg- 
 cock, 4911; Hottes, 1914; Spaulding, 302; Tourney, 10). Bonelli's Ferry 
 (Goodding, 725). Pagumpa (Jones, 5095aa) . Cosnino (Jones, 4041). 
 Paradise (Ferriss). Ash Fork (Hedgcock, 15980). Bass Creek (Pils- 
 brii. 1906). Cave Creek (Pilsbry, 1906). Without locality (Bischoff; 
 (iirard; Palmer; Vasey; Kuntze, 23231). Sedona (Hedgcock, 4939). 
 NEW MEXICO. Santa Fe (Fendler, 281, 1847,-the type; Heller, 3534). 
 Ruckman (Hottes, 1914). Copper Mines (Thurber, 1851). Near the 
 Zuni (Bigelow, 3). Silver City (Greene, 1880; Hedgcock & Long, 9854). 
 Mogollon Mts. (Rusby, 390, 7262). Fort Bayard (Mulford, 374; Hed- 
 ricks, 180; Johnson, 8270, 8279; Munro, 15112). Fort Wingate (Mat- 
 1hews,1883). Socorro (Plank, 1895). Gray (Skehan, 1899). Hermosa 
 (Wooton, 2866). Lincoln Co. (Woot on, 386). Queen (Wooton, 1909). 
 Organ Mts. (Wooton, 1900; Ferriss). Burro Mts. (Metcalfe, 737). 
 Grant Co. (Blumer, 95, 105, 109, 110). Gila River (Vreeland, 806). Gila 
 Forest (Hedgcock & Long, 9862; Munro, 15111). Pinos Altos (Hedg- 
 cock, 784, 9833). Sandia Mts. (Hedgcock, 1512). North of Fierro 
 (Diehl,296). Caiioncito (Brandegee, 1879). Cooledge (Munson & Hop- 
 kins, 1889). Magdalena (Herrick, 985). Anton Chico (Griffiths, 11135). 
 Without locality (Douglass, 1887; Wright, 1788). TEXAS. Davis Mts. 
 (Earle & Tracy, 334). Placitos (Hedgcock, 16545). MEXICO. CHIHUA- 
 HUA. Colonia Garcia (Townsend & Barber, 164). Sierra Madre. (Prin- 
 gle, 1358) . 
 
 PHORADENDRON LIBOCEDRI Howell. 
 
 Phoradendron Libocedri Howell, Fl. N. W. Amer. vol. 1. p. 608. 1902. 
 P. juniperinum Libocedri Engelmann in Watson, Bot. Calif, vol. 2. p. 105. 
 1880. 
 
 Not forked, the elongated slender somewhat squarish branches without 
 cataphyls, dioecious. Internodes short ( 1-2x10 mm. ) , cellular-granulated. 
 Stem scales spreading, half-ovate, occasionally obscurely constricted at 
 base, about 1 mm. long. Spikes solitary, very short (3 mm.), smooth, 
 with a single short joint 2-flowered when pistillate and 6- or 8-flowered 
 when staminate : peduncle 2 mm. long : scales rather blunt. Fruit straw- 
 colored, subglobose, 3 mm. in diameter: sepals erect, parted. Plates 
 2, 6, 15. 
 
 Californian region, usually on Libocedrus. The type from California. 
 
 Specimens examined: UNITED STATES. OREGON. Waldo (Howell, 
 1884,1887). CALIFORNIA. Lassen's Peak (Lemmon, 1875 to be taken as 
 type). Klamath Forest (Hedgcock, 1895). Duffield's Ranch (Bigelow, 
 
24 THE GENUS PHOEADENDEON 
 
 1, 1854). Calaveras Grove (Hutchens, 1900; also on Abies). Sierraville 
 (Lemmon, 1879) . Tehipite Valley (Hall & Chandler, 527} . Black Butte 
 (Engelmann, 1880) . Eldorado Co. (Hansen, 1887). Yreka (Hedgcock, 
 1898; Pond, 183). Amador Co. (Curran, 1886; Hansen, 74, 721). 
 Butte Co. (Bruce, 687). Mariposa (Congdon, 1903). Sugar Pine 
 (cfter/ee,1914). Wawona (Solereder, 1893). Yosemite Valley (Hottes, 
 1914 ; Hedgcock & Meinecke, 4805) . Kern River Valley ( Coville & Funs- 
 ton, 1729). Colby (Austin, 698). Fish Camp (Hedgcock & Meinecke, 
 4830) . San Bernardino Mountains (Parrij & Lemmon, 373 ; Parry, 877 ; 
 Rusby, 1909; Parish, 970, 5071; 3005, on Pinus). Riverside (Grant, 
 4517). San Jacinto Mountains (Leiberg, 3150; Grant, 977; Hall, 2565). 
 San Diego Co. (Stokes, 1895). Cuyamaca Mountains (Orcutt, 234). 
 NEVADA. Franktown, Washoe Co. (Lewers, 1892). Lincoln Co. (? Co- 
 ville & Funston, 307). MEXICO. LOWER CALIFORNIA. Without locality 
 (Brandegee, 1893). 
 
 Phoradendron ligatum n. sp. 
 
 Not forked, the rather elongated and slender somewhat squarish 
 branches without cataphyls, dioecious. Internodes short (2x5-10 mm.), 
 rather prominently cellular-granular. Stem scales spreading, nearly 
 half-round, sharply constricted-grooved at base but not deciduous, 1 mm. 
 long. Spikes solitary, very short (2 mm.), smooth : peduncle about 1 mm. 
 long. Fruit?. Plates 3, 15. 
 
 Californian region passing into the western Sierra Madre ( 1 exclu- 
 sively) on Juniperus. The type from Oregon. The western representa- 
 tive of the Rocky Mountain P. juniperinum, from which it is scarcely sep- 
 arable except by its curiously constricted scales. 
 
 Specimens examined : UNITED STATES. OREGON. Crook Co. ( Cusick, 
 2637, -the type; Leiberg, 285; WJiited, 3179). Klamath Lake (Coville, 
 1351). CALIFORNIA. Mono Pass (Bolander, 1866). Sierraville (Lem- 
 mon, 1875, 1879). Amador Co. (Hansen, 721). Plumas Co. (Austin, 
 1876). Modoc Co. (Manning, 58). Sisson (Lyon, 1905). Warren Mts. 
 (Griffiths & Hunter, 405). San Bernardino Mts. (Parish, 1444) 
 NEVADA. Virginia City (Bloomer, 1863-4). Reno (t Hillman, 11715). 
 Franktown (Lewers). Without locality (Clendon, 1871; Wlieeler, 1872; 
 Pratten). MEXICO. DURANGO. Santiago Papasquiaro (Palmer, 79). 
 CHIHUAHUA. Huajotitan (Endlicli, 1164). Guachochi (Goldman, 178) . 
 "Sierra Madre" ( ? Jones, Sept. 23, 1903,-on Cupressus). 
 
 2. BOLLEANAE. 
 
 Leaves sessile, articulated with the stem, scale-like (but fleshy) in the 
 first species only. Californian and Chihuahuan regions, extending to the 
 Pacific island Guadalupe and the eastern Sierra Madre of Mexico in a 
 single species each. 
 
BOREALES BOLLEANAE 25 
 
 Leaves short, resembling scales, but thick and disarticulating: glabrous: 
 spike 1- jointed. P. minutifolium. 
 
 Leaves linear-oblong. 
 
 Tomentose : spike often 2- or 3-jointed. P. capitellatum. 
 
 Minutely papillate or hispid : spike mostly 1- jointed. 
 
 Staminate spike about 12-flowered. P. tequilense. 
 
 Staminate spike about 6-flowered. P. saltUlense. 
 
 Leaves somewhat spatulately linear. P. Bolleanum. 
 
 Leaves oblanceolate-spatulate. 
 Spike mostly 1-jointed. 
 
 Staminate spike about 12-flowered. On Juniperus. P. densum. 
 Staminate spike about 8-flowered. On Abies, etc. P. pauciflorum. 
 Spike mostly 2-jointed: Staminate spike about 6-flowered. 
 
 P. guadalupense. 
 PHORADENDRON MINUTIFOLIUM (Urban). 
 
 PJioradendrum minutifolium Urban, Bot. Jahrb. vol. 23. Beiblatt 57. 
 p. 2. 1897. 
 
 Not forked, the moderately short and slender somewhat squarish 
 branches without cataphyls, dioecious. Internodes short (1-2x10 mm.), 
 glabrous. Leaves scale-shaped as in the preceding but fleshier, spreading, 
 half-ovate, acute, articulated at base and deciduous, 2-3 mm. long. Spikes 
 solitary, very short (scarcely 3 mm.), smooth, with a single joint. 
 Fruit 1 Plate 16. 
 
 Eastern Sierra Madre region ( ? exclusively) on Juniperus. The 
 type from Eastern Mexico. Forming a transition to the preceding group. 
 
 Specimens examined : MEXICO. Llanos de Perote (Schiede, 402,-ihe 
 type). Cofre de Perote (Humboldt, -associated with Arceuthobium 
 vaginatum) . 
 
 Phoradendron capitellatum Torrey, n. sp. 
 
 Phoradendron capitellatum Torrey in herb. 
 
 Viscum Reichenbachianum Seemann, Bot. Herald, p. 295. 1852-7, as 
 to the Wright citation only. 
 
 Not forked, the moderately long and slender branches without cata- 
 phyls, dioecious. Internodes short (1-3x5-10 mm.), at least for a time 
 densely stellate-tomentose. Leaves narrowly elliptical-oblong or in- 
 volutely linear, submucronately acute, sessile, 2x10-15 mm. Spikes soli- 
 tary, very short (5 mm.), with mostly 2 rounded joints 2-flowered when 
 pistillate and about 6-flowered in 6 series when staminate : scales somewhat 
 hairy: peduncle suppressed. Fruit straw-colored, subglobose, about 
 4 mm. in diameter : sepals somewhat pointed. Plate 17. 
 
 Chihuahuan region ( ? exclusively) on Juniperus, The type from 
 New Mexico. 
 
26 THE GENUS PHORADENDRON 
 
 Specimens examined : UNITED STATES. NEW MEXICO. Without local- 
 ity (Wright, 1787, 1851-2 -the type; Greene, 1880). Stem's Pass 
 (Tourney, 1895). Florita Mts. (Jones, Sept. 1903). Alamogordo (Rehn 
 & Viereck, Apr. 1902). Dog Mts. (Mearns, 300). Carrozalillo Mts. 
 (Mearns, 172). S. Luis Mts. (Mearns, 2485) . TEXAS. Western Texas to 
 El Paso (Wright, 630, 1849). ARIZONA. Near Clifton (Greene, 1880). 
 South of Flagstaff (Drake, 15118, 15118a). Pajarito Mts. (Schott, July 
 1855 ; Trelease, 363) . White Tail (Pilsbry, Nov. 1906) . Chiricahua Mts. 
 (Blumer, 1524, 1957, 1989, 1906). Sanoita Valley (Lemmon, 266). 
 Oracle (Hedgcock, 9685). Bowie (Jones, Sept. 1884). MEXICO. SONORA. 
 Guadalupe Canon (Merton, 2073; Mearns, 2529). S. Pedro to Fronteras 
 (Hartman, 944). 
 
 Phoradendron tequilense n. sp. 
 
 Not forked, the rather long and slender branches without cataphyls, 
 dioecious. Internodes rather short (1-2x5-10 mm.), closely papillate. 
 Leaves linear- or oblong-elliptical, acute or mucronate, sessile, 2x10-15 
 mm. Spikes mostly solitary, short (4-7 mm.), nearly smooth, 1- jointed 
 and 2-flowered when pistillate and capitately about 12-flowered, or with 
 2 such globose joints, when staminate: peduncle 3-5 mm. long. Fruit 
 straw-colored, subglobose, 3 mm. in diameter : sepals conically somewhat 
 parted. Plate 18. 
 
 Western Sierra Madre region ( ? exclusively) on Thuya. The type 
 from Jalisco. 
 
 Specimens examined: MEXICO. Sierra de Tequila, Jal. (Pringie, 
 4434, 1893, the type). 
 
 PHORADENDRON BOLLEANUM Eichler. 
 
 Phoradendron Bolleanum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 134 m. 1868. 
 Viscum Bolleanum Seemann, Bot Herald, p. 295. pi. 63. 1852-7. 
 
 Not forked, the rather short and stout branches without cataphyls, 
 dioecious. Internodes short (1-2x5-15 mm.), evanescently minutely and 
 sparingly short-hispid. Leaves somewhat spatulately linear-elliptical, 
 submucronately acute, sessile, 2-4x mostly 10-15 mm. Spikes often clus- 
 tered, very short (3 mm.), somewhat hispid, the mostly single joint 
 2-flowered when pistillate and about 4-flowered when staminate : peduncle 
 2 mm. long. Fruit straw-colored, subglobose, about 4 mm. in diameter : 
 sepals somewhat parted. Plate 19. 
 
 Chihuahuan and Western Sierra Madre regions, usually on Juniperus, 
 one specimen on Arbutus. The type from Chihuahua. 
 
 Specimens examined: UNITED STATES. TEXAS. Without locality 
 (Boundary Survey, 1235; Nealley, 1890). Cornudas Mts. (Havard, 83). 
 
BOREALES BOLLEANAE 27 
 
 MEXICO. CHIHUAHUA. Sierra Madre (Seemann,-ihe type of V. Bollea- 
 num; Endlicli, 1222: Jones, Sept. 1903, a form with short leaves 2x7 
 mm., approaching the preceding in roughening and length of peduncle. 
 Near San Julian (Nelson, 4921}. Santa Eulalia Mts. (Pringle, 256, 
 1885). DURANGO. Vicinity of Durango ( 1 Palmer, 778, noted as on a 
 Madrona, apparently Arbutus arizonica, and hence very aberrant in the 
 group which is usually found on conifers). Mesa de Sandia (Goodding, 
 2149). Guanacevi (Nelson, 4756}. TEPIC. Sta. Teresa (Rose, 3442}. 
 
 Phoradendron saltillense n. sp. 
 
 Not forked, the moderately long and stout branches without cata- 
 phyls, dioecious. Internodes short (2-4x10-20 mm.), papillate-hispid. 
 Leaves narrowly oblong, submucronately acute, sessile, 2-3x20-30 mm. 
 Spikes more or less clustered, short (5-6 mm.), nearly smooth, the single 
 joint 2-flowered when pistillate and about 6-flowered when staminate: 
 peduncle 2 mm. long. Fruit?. Plate 16. 
 
 Chihuahuan region ( ? exclusively) on Juniperus. The type from 
 northern Mexico. 
 
 Specimens examined : MEXICO. San Antonio de las Alazanes, near 
 Saltillo (Gregg, 399, 1848, the type). 
 
 Phoradendron densum Torrey n. sp. 
 Phoradendron densum Torrey in herb. 
 
 Not forked, the rather short and thick branches without cataphyls, 
 dioecious. Internodes short (-2-4x5-10 mm.), usually papillate-rough- 
 ened. Leaves shortly oblanceolate, usually very obtuse, sessile, 4-6x12-15 
 or rarely 20 mm. Spikes sometimes clustered, very short (3 mm.), 
 smooth, with 1 or rarely 2 joints 2-flowered when pistillate and about 
 12-flowered when staminate : peduncle 1-2 mm. long. Fruit straw-colored, 
 subglobose, about 4 mm. in diameter : sepals somewhat parted. Plate 20. 
 
 Calif omian and Sonoran regions ( ? chiefly) on Juniperus. The 
 type from California. 
 
 Specimens examined : UNITED STATES. OREGON. Lake Co. ( Cusick, 
 2260a}. Klamath Reservation (Covttle, 1352}. Scott River Valley 
 (Pond, 191}. Klamath Co. (Walpole, 418; Applegate, 1899). CALI- 
 FORNIA. Mt. Shasta (WUkes Exped., 1567, 1838-42 the type). Near 
 Shasta (? Coffman, 1913 on Cupressus}. Duffield's Ranch (IBigelow, 
 1, 1854). Klamath River (Engelmann; Butler, 1071}. Inyo Mts. (Co- 
 ville & Funston, 589}. Geysers, Lake Co. (Brewer, 865}. Siskiyou Co. 
 (Copeland, 3542; Walpole, 230; Eastwood, 3542}. Hoey (Tillotson, 
 8329}. Yreka (Engelmann & Sargent, 1880). Lassen Co. (Baker & 
 
28 THE GENUS PHORADENDKON 
 
 Nutting, 1894). Hesperia (Trelease, 1892). San Jacinto Reserve (Lei- 
 berg, 3161}, Los Angeles Co. (Elmer, 3607; Hasse; Abrams & Mc- 
 Gregor, 543; Chamberlain). San Bernardino Mts. (Coville & Funston, 
 130). San Felipe (Palmer, 442). San Diego Co. (Orcutt; Mearns, 3013, 
 3198; Schoenfeldt, 3045). Sta. Rosa Mts. (Smith, 5483). Kentucky 
 Springs (Davy, 205). Cuyama (Eastwood, 1896). Antelope Valley 
 (Hough; Davy, 2603). Without locality (Kuntze, 3168). MEXICO. 
 SONORA. San Rafael (Jones, 37032, 1882). 
 
 In the south the leaves are prevailingly narrower than in the north, 
 particularly so in Parish, 899, from the San Bernardino Mountains, for 
 which the name f . Parishii may be used. Plate 21. What must be taken 
 for P. densum occurs also in Arizona ( Sedona, near Flagstaff, Hedgcock, 
 4915 in part on Cupressus). 
 
 PHORADENDRON PAUCIFLORUM Torrey. 
 
 Phoradendron pauciflorum Torrey, Bot. Whipple. p. 134. 1857. (Senate 
 Ex. Doc. no. 78. 33d Congress, 2d Session, Report of expl. and surv. 
 . . . Miss, river to the Pacific, vol. 4. pt. 4, Torrey, Description of the 
 general botanical collections) . 
 
 Not forked, the rather lax and long branches without cataphyls, di- 
 oecious. Internodes long for the group (2-4x15-40 mm.), somewhat gran- 
 ular-varnished. Leaves oblanceolate-elliptical, submucronately obtuse, 
 sessile, 5-7x20-30 mm. Spikes mostly solitary, very short (scarcely 5 
 mm.), with 1 or rarely 2 joints 2-flowered when pistillate and about 
 8-flowered when staminate : peduncle scarcely 2 mm. long. Fruit straw- 
 colored, subglobose, 4 mm. in diameter: sepals somewhat parted. 
 Plate 22. 
 
 Californian region ( ? exclusively) on Abies and Cupressus.* The 
 type from California. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Duffield's 
 Ranch (Bigelow, 2, 1854, to be taken as type). Mariposa (Congdon, 
 1903). Trail to Big Carson (Eastwood, 1897-8 on Cupressus). Kern 
 Co. (Coville & Funston, 1192, 1891; Davy, 2027). Baldy Trail (Mc- 
 Clatchie,1893). Mount Tamalpais (Eastwood, 1898). Bear Valley, San 
 Bernardino Mts. (Parish, 1443; Jones, 1900). San Jacinto Reserve (Lei- 
 berg, 3152). Cajon Pass (Bigelow, Mar. 16, 1854). Cuyamaca Mts 
 (Orcutt, 545). Fish Camp (Hedgcock & Meinecke, 4829). MEXICO. 
 LOWER CALIFORNIA. San Pedro Martir (Brandegee, 1893). 
 
 I do not distinguish from this, except in a somewhat longer basal 
 attenuation of the leaves and the occurrence of about 14 flowers on each 
 
 *Cf. Hedgcock, Phytopathology, vol. 5. p. 179, for a note on the hosts of this 
 and allied species not clearly separated. 
 
BOEEALES FLAVESCENTES 29 
 
 joint of the staminate spikes, specimens on Abies from the Sta. Catalina 
 Forest Reserve, Arizona ( J. S. Holmes, Aug. 7, 1906 ; Hedgcock & Long, 
 9720}. 
 
 Phoradendron guadalupense n. sp. 
 
 Not forked, the moderately long and lax branches without cataphyls, 
 dioecious. Internodes moderately short (2-4x10-15 mm.), slightly pa- 
 pillate. Leaves oblanceolate-spatulate, very obtuse, sessile, 5-8x15-30 
 mm. Spikes often clustered, rather long for the group (nearly 10 mm.), 
 smooth, with usually 2 or 3 joints 2-flowered when pistillate and about 
 6-flowered when staminate: peduncle 1-2 mm. long, sometimes bearing 
 flowers. Fruit?. Plates 22, 23. 
 
 Western insular region of Mexico. The type from Guadalupe. 
 
 Specimens examined: MEXICO. Guadalupe Island (Palmer, 85, 
 1875, the type : the host plant not noted). 
 
 B. PLURISERIALES. 
 
 Stems never winged. Spikes more or less elongated, 2- to 6-jointed, 
 each joint with 6 or more flowers mostly in 6 series. Berries globose or 
 ellipsoidal, smooth and in most species glabrous, moderately small (3 to 
 mostly 4 or 5 mm.), white or slightly tinged with greenish yellow. The 
 young growth at least is puberulent or hairy. Continental North Amer- 
 ica, centering about northern Mexico. 
 
 Leaves never long, usually small ; shoots not flattened. 
 
 Leaves moderate. Chiefly northern. FLAVESCENTES. 
 
 Leaves small. Southern. BRACHYSTACHYAE. 
 
 Leaves large and hairy. Southern. FERRUGINEAE. 
 Leaves long and relatively large. 
 
 Shoots not flattened. VELUTINAE. 
 
 Shoots compressed at nodes, LONGIFOLIAE. 
 
 3. FLAVESCENTES. 
 
 Leaves usually relatively broad, never large or greatly elongated, very 
 obtuse. Shoots, if evanescently somewhat square, neither acutely angled 
 nor much compressed. United States and adjacent Mexico. 
 Berries relatively large (4-5 mm.), glabrous except in the last group, 
 with sepals over one-half mm. long : leaves prevailingly oblanceolate. 
 Staminate spikes slender, the nearly glabrous few-flowered joints 2-7 
 mm. long. Eastern. 
 
 Leaves prevailingly oblanceolate-obovate : rather stout. 
 
 Fruiting spikes short (20-40 mm.) with crowded whorls of 
 berries. P. flavescens. 
 
30 THE GENUS PHOKADENDRON 
 
 Fruiting spikes elongated (60-70 mm.) with separated 
 whorls of berries. P. macrotomum. 
 
 Leaves narrower, subspatulate : slender. P. Eatoni. 
 
 Staminate spikes mostly stouter and longer, the rather many-flow- 
 ered joints 6-15 mm. long. Southwestern, Pacific or Mexican. 
 Spikes canescently tomentose. 
 
 Staminate spikes moderate (15-20 mm.). Texan. 
 
 P. Engelmanni. 
 Staminate spikes long (40-60 mm.). North Mexican. 
 
 P. Greggii. 
 
 Spikes short. East Mexican. P. thyrsoideum. 
 
 Spikes yellow-hispid, moderate. East Mexican. P. colipense. 
 Spikes glabrous or sparsely villous. 
 
 Leaves rounded. P. macro pJiyllum. 
 
 Leaves oblanceolate. 
 
 Flowers large. New Mexican. P. Cockerellii. 
 
 Flowers moderate. Desert. P. coloradense. 
 
 Spikes rather canescently short-villous. Californian. 
 
 P. longispicum. 
 
 Staminate spikes short, the few-flowered short-villous joints scarcely 
 5 mm. long : fruit somewhat villous. 
 
 Short-villous. Californian. P. villosum. 
 
 Velvety-tomentose. Mexican. P. tomentosum. 
 
 Minutely rusty-pubescent. Mexican. P. puberulum. 
 
 Berries small (3 mm.), pubescent above, with sepals scarcely one-third 
 
 mm. long : leaves prevailingly rounded. Southwestern. 
 
 Leaves moderate (often 25x30 mm.). P. Coryae. 
 
 Leaves small (10x15-20 mm.). 
 
 Spikes closely tomentose. Texan. P. Havardianum. 
 
 Spikes slightly villous. North Mexican. P. Wilkinsoni. 
 
 PHORADENDRON FLAVESCENS Nuttall. 
 
 Plioradendron fiavescens Nuttall, Journ. Acad. Philadelphia, n. s. vol. 1. 
 
 p. 185. 1847. v. Ettingshausen, Denkschr. Akad. Wien. vol. 32. 
 
 pt. 1. pi. 2. Britton & Brown, 111. Fl. vol. 1. f . 1272. Amer. Journ. 
 
 Pharm. vol. 55. p. 421. f. Coulter, Barnes & Cowles, Text Book. 
 
 vol. 2. f . 1084. Garman, Bull. Ky. Agr. Exper. Sta. no. 169. f . 12. 
 
 Bailey, Cycl. Am. Hort. 4 ed. 4 :1312. f . 1766. 
 P. flavescens glabriusculum Engelmann, Boston Journ. Nat. Hist. vol. 6. 
 
 p. 212. 1850. 
 Viscum flavescens Pursh, Fl. Am. Sept. vol. 1. p. 114. 1814. de Can- 
 
 dolle, Prodromus. vol. 4. p. 280. 
 V. leucarpum Rafinesque, Fl. Ludov. p. 79. 1817. 
 V. leucocarpum de Candolle, Prodromus. vol. 4. p. 280. 1830. 
 V. serotinum Rafinesque, New Fl. N. Amer. vol. 3. p. 22. 1836. 
 V. ochroleucum Rafinesque, 1. c. p. 23. 1836. 
 
POREALES FLAVESCENTES 31 
 
 W. oblongifolium Rafinesque, 1. c. p. 23. 1836. 
 V. rugosum Rafinesque, I. c. p. 24. 1836. 
 
 V. verticillatum Audubon, Birds of Amer. vol. 4. pi. 369 ; quarto ed. vol. 
 3. pi. 143. 
 
 Not forked, the rather short and stout branches without cataphyls, 
 dioecious. Internodes rather short (2-4x15-30 mm.), like the foliage be- 
 coming nearly glabrous from slightly but not canescently tomentose. 
 Leaves oblanceolate to obovate, very obtuse, 1.5-2 or 3 or even 4.5x2-5 cm., 
 rather fleshy, obscurely 3- to 5-nerved or also veiny, cuneately subpetioled 
 for about 5 mm. Spikes mostly solitary, short (10-15 or rarely 20 mm., 
 lengthening to 25-40 mm. in fruit), at first puberulent, with about 4 short 
 joints clavately 6-flowered when pistillate and subglobose and about 12- 
 flowered when staminate: peduncle 2-6 mm. long: scales more or less 
 short-pilose. Fruit white or whitish, globose or somewhat ellipsoidal, 
 glabrous, about 4x5 mm., in approximate whorls: sepals nearly or quite 
 glabrous, closely inflexed. Plates 5, 24, 25. 
 
 Atlantic United States, on a great variety of Angiosperms* (Acer, 
 Gleditsia, Nyssa, Platanus, Quercus, Ulmus, etc.), of which it most com- 
 monly affects only one in a given region, doubtless illustrating the same 
 host-adaptation as the mistletoe of northern Europe, Viscum album, with 
 which it was at first confused. The type to be understood as of Carolina. 
 
 Specimens examined: UNITED STATES. NEW JERSEY. Without lo- 
 cality (Miihlenberg, 639, in Herb. Willdenow as no. 18295, Viscum pur- 
 pureum "Willdenow, not L. ; Cuming, 1823 ; Schweinitz, 1829 ; Korfhals, 
 1843; Eby, 1894). [Monmouth or Ocean Co.?] (Knieskern). Atsion 
 (Tatnall). Middletown (Torrey). PENNSYLVANIA. Cumberland Mts. 
 (Kaflnesque, 1823, V. serotinum). Martio (Eby. 1888). DELAWARE. 
 Eastern short (Canby, 1880). Without locality (Nuttall; Beyrich; Read). 
 Newcastle Co. (Canby, 1862). MARYLAND. Montgomery Co. (Darling- 
 ton). Baltimore (Harper, 1888). Eastern shore (Stevens, 1885). DIS- 
 TRICT OF COLUMBIA. Washington (Ward, 1876). VIRGINIA. Without lo- 
 cality (Buckley; Stocking; Vasey, 1875). Bedford Co. (Curtiss, 1872). 
 Virginia Beach (Britton, 1892). Norfolk Co. (Heller, 750). Hanover 
 Co. (Henry, 1890). Dismal Swamp (Kearney, 2356). Near Washington 
 (Hedgcock, 8269). WEST VIRGINIA. Without data (McCarthy). Hunt- 
 ington (Killingsworth, 1915). NORTH CAROLINA. Without locality (Bald- 
 win, 307, Pursh herb. ; Buysman, 1883 ; McCarthy, 1879). Hot Springs 
 (Ransdell). Swain Co. (Beardslee & Kofoid, 1891). Biltmore (Butm,ore 
 Herb., 4339a). Chapel Hill (Coker, 1911). Great Lake (Brown, 114). 
 SOUTH CAROLINA. Without locality (Bosc; Curtis, 1852). Charleston 
 (Clark, 1857). Abbeville (Diedrick, 118). Santee Canal (Ravenel). 
 
 *A list of hosts is given by Hedgcock in Phytopathology, vol. 5. p. 178. 
 
32 THE GENUS PHORADENDRON 
 
 Oconee Co. (Anderson). GEORGIA. Without locality (Beyrich, 1834). 
 Oconee & Gwinnett Cos. (Small, 1893). Darien (Smith, 2310}. Thomson 
 (Bartlett, 6). FLORIDA. Without locality (Martin). Apalachicola (Dean). 
 Jacksonville (Faxon, 1873). Beresford (Hulst, 1893). Lake City (Rolfs, 
 538; Bitting, 1079). Brooksville (Long, 15169). ALABAMA. Without lo- 
 cality (Bigelow). Gainesville (Soulard, 1872). Auburn (Earle & Baker, 
 1897; Graham, 1911). Talladega Springs (Pollard & Morgan, 247a). 
 MISSISSIPPI. Natchez (Shimek, 1898). LOUISIANA. Without locality 
 (Tainturier; Trudeau). New Orleans (Drummond, 140, 1832). Baton 
 Rouge (Dodson, 1896 ; Edmunds; Edgerton) . ARKANSAS. Without local- 
 ity (Rafinesque, V. serotinum). Fort Smith (Bigelow, 77, 1853). Jud- 
 sonia (Meek, 1889). Independence (Eggert, 1896). Black Rock (Rolfs, 
 1891). Little Rock (Basse; von Schrenk & McCrory, 1912). Ft. Cobb to 
 Ft. Arbuckle (Palmer, 254, 1868). Earle (Pittmann, 1902). Batesville 
 (Smith, 183, the 5-jointed staminate spikes nearly 40 mm. long). 
 OKLAHOMA. Verdigris (Bush, 526). Tulsa (Davidson, 1898). Musko- 
 gee (Brainerd, 1911). MISSOURI, Dunklin Co. (Bush, 1892). Ashville 
 (Eggert, 1892). Poplar Bluff (Eggert, 450; Eby, 1893 ; Savage & Stull, 
 1174). TENNESSEE. Without locality (Chadbourne) . Memphis (Fend- 
 ler). Decatur Co. (Ames, 1858). Knox Co. (Ruth, 176, 177, 1426). 
 Nashville (Lapham, 1874; Palmer, 1897). KENTUCKY. Without local- 
 ity (Rafinesque, V. serotinum; Steetz). Lexington (Short). Corydon 
 (Powell). Shelbyville (Herb. Jones., 2459). Bowling Green (Price). 
 ILLINOIS. "Champaign Co." (Perriam, doubtless an error of locality). 
 Pulaski Co. (Brendel, 1860). Metropolis (Gleason, 1902). Mt. Carmel 
 (Trelease). Villa Ridge (Raymond, 1869). INDIANA. Without locality 
 (Prince Wied Neuwied, 1838). New Harmony (Engelmann, 706, 1835). 
 Evansville (Marker, 1901). OHIO. Without locality (Frank, 1835, 
 1837). Banks of the Ohio (Engelmann, 1840). Near North Bend (Short, 
 1852). Lawrence Co. (Werner, 1892). Cleveland (Krebs, 101). 
 
 Rafinesque, in the mistletoes of the region east of the Mississippi 
 river, saw five species: (1) Viscum ochroleucum, with subsessile obo- 
 vate 3-nerved leaves, spikes nearly equaling them, and yellowish white 
 berries, from New Jersey to Florida; (2) V. rugosum, with petiolate 
 obovate or broadly elliptical 3-nerved leaves, very short spikes, and white 
 berries turning red when dry, from Delaware and Virginia. These two 
 seem to represent the range of forms in the northern Atlantic States, 
 and, dating from 1836, their specific names, under Viscum, are later than 
 flavescens of Pursh (1814) under the same genus. The flowering of 
 ochroleucum is said to be vernal; (3) V. serotinum (PI. 25), with sub- 
 petiolate obovate hardly nerved leaves longer than the spikes, and snowy 
 white berries turning purplish when dry, from Kentucky, Illinois and 
 Missouri. This is said to flower in the autumn and early winter, and 
 
BOREALES FLAVESCENTES 33 
 
 the description agrees well with the plants of the middle west, which, 
 like Rafinesque's specimens, are hardly distinguishable from those of 
 the east; the name (1836) can not displace the earlier flavescens; (4) 
 V. leucarpum, with sessile oblong probably nerveless leaves, glomerate 
 spikes with the flowers in twos or threes, and white berries, from west- 
 ern Louisiana and probably Texas. In the more elongated leaves this 
 description agrees sufficiently well with the plant now known from Louis- 
 iana, though scarcely separable from the narrower-leaved eastern form 
 except in its fewer and more distant fruits. Dating from 1817, this 
 name also is more recent than flavescens. The last of the Rafinesque 
 species, (5) V. oblongifolium, with petiolate oblong or narrowly elliptical 
 somewhat 3-nerved leaves, very short spikes, and solitary oblong 
 "red"[ ?] berries, from Florida, can scarcely be compared with anything 
 known to me except the close ally of flavescens collected by Mr. Eaton in 
 the Everglades, from which region Rafinesque is not known to have seen 
 material. Like most of the preceding, this name dates from 1836, so 
 that it cannot be made to replace the earlier flavescens, though if it could 
 be shown to pertain to Mr. Eaton's plant it would have priority (under 
 Viscum) over the name now given to that Phoradendron. The only spe- 
 cies of Rafinesque of which I have seen specimens is labeled Viscum 
 serotinum, from the Cumberland Mountains of Pennsylvania and an 
 unspecified locality in Arkansas, in the Delessert Herbarium ; and from 
 an unspecified locality in Kentucky, at the Academy of Science of Phila- 
 delphia. 
 
 A curious fact in the history of this species is that Pursh, who un- 
 mistakably meant the Viscum album of Walter, wrote flavescens Willde- 
 now [Swartz], instead of flavens Willdenow, with which West Indian 
 species he ambiguously identifies the mistletoe of the southeastern United 
 States which thus obtained its now long-established specific name through 
 accidental copying or deliberate emendation (for it is twice spelled 
 flavescens) of a preoccupied name. It may be noted, too, that Eichler 
 wrote flavum instead of flavens in the key of his masterly analysis of 
 the genus in tropical America. 
 
 Though Willdenow had the present species in his herbarium (PL 25) 
 as representing the Viscum purpureum of Linnaeus, there can be little 
 doubt that Linnaeus himself intended this name to apply to the West 
 Indian mistletoe figured on plate 95 of Catesby's great work, which 
 obviously represents a Dendropemon, to which genus the Linnean spe- 
 cies is now, and properly, referred. 
 
 PHORADENDRON FLAVESCENS ORBICULATUM Engelmann. 
 
 Phoradendron flavescens orbiculatum Engelmann, Boston Journ. Nat. 
 Hist. vol. 6. p. 212. 1850. 
 
34 THE GENUS PHORADENDEON 
 
 P. orbiculatum Engelinann, Mem. Amer. Acad. n. s. vol. 4. p. 59. 1849. 
 
 Differs from the type, into which it seems to pass, in its character- 
 istically nearly round leaves, 15-25x20-30 mm. Plate 26. 
 
 Southwestern Atlantic region ( ? exclusively) on Quercus. The type 
 from Arkansas. 
 
 Specimens examined. UNITED STATES. ARKANSAS. Little Rock 
 (Engelmann, 707, 1837, the type of P. orbiculatum ; von Schrerik, 1912) . 
 Arkansas Post (Kellogg, 1909). OKLAHOMA. Without locality (From 
 8. F. Trelease, 1915). LOUISIANA. Shreveport (von Schrenk, 1912). 
 TEXAS. Dallas (Bush, 1160}. Trinity River (1 Mearns, 171). Quitman 
 (Long ,12048). 
 
 PHORADENDRON MACROTOMUM Trelease. 
 
 Phoradendron macrotomum Trelease in Small, Shrubs of Fla. p. 121. 
 1913. 
 
 Not forked, the moderate branches without cataphyls, dioecious. In- 
 ternodes rather long (2-4x30-40 mm.). Leaves prevailingly oblanceolate, 
 very obtuse, 1.5-2x5-7 cm., cuneately petioled for about 10 mm. Spikes 
 mostly solitary, moderate (20-30 mm.), lengthening to 60 or 70 mm. in 
 fruit), somewhat pubescent, with about 5 joints clavately about 6-flow- 
 ered when pistillate and some 20-flowered when staminate : peduncle 2-6 
 mm. long: scales somewhat tomentose. Fruit more or less greenish 
 white, rather ellipsoidal, glabrous, 4x5 mm., in distinctly separated 
 whorls : sepals nearly glabrous, closely inflexed. Plates 5, 27. 
 
 South Atlantic region, on Fraxinus, Nyssa, Prunus, Punica, Quercus, 
 Xantnoxylum, etc. The type from Florida. 
 
 Specimens examined : UNITED STATES. FLORIDA. Jacksonville ( Cur- 
 iiss, 4569, 1894, the type ; 2459; LightMpe, 1897 ; Long, 15214) . Hills- 
 borough Co. (Frednolm, 6474). Hibernia (Canby, 1869). Without lo- 
 cality (Gray, 1842; Gilbert, 1883). Manatee (Simpson, 49). Clarcona 
 (Meislahn, 155). Orange Springs (M ell, 1907). Gainesville (Scnnabel, 
 1911; Long, 15133, 15242). Red Bay (Ward, 1912). Clearwater Har- 
 bor (PUsbry, 1904). Palatka (Smith, 1872). Lynne (Long, 15180, 
 15180a, 15181). Fort Myers (Long, 15155-6). 
 
 PHORADENDRON EATONI Trelease. 
 PTioradendron Eatoni Trelease in Small, Shrubs of Fla. p. 121. 1913. 
 
 Not forked, the slender branches without cataphyls, dioecious. Inter- 
 nodes moderately long (1-3x15-30 mm.), glabrescent. Leaves oblanceo- 
 late-elliptical, very obtuse, 1-1.5x2.5-4 or 5 cm. Spikes solitary, short 
 (5-10 or 15 mm.), minutely velvety, with 2 or 3 rounded or shortly 
 
BOREALES FLAVESCENTES 35 
 
 oblong joints 6- to 12- or even 30-flowered when staminate : peduncle 1-2 
 mm. long: scales minutely velvety. Pistillate flowers and fruit?. 
 Plate 28. 
 
 South Atlantic region ( ? exclusively) on Fraxinus. The type from 
 Florida. 
 
 Specimens examined: UNITED STATES. FLORIDA. Deep Lake, Lee 
 Co. (Alvah A. Eaton, 1310, Mar. 1905, the type). Hancock Creek 
 (Harsliberger, 1912). 
 
 Phoradendron Engelmanni n. nom. 
 
 Phoradendron flavescens pubescens Engelmann, Boston Journ. Nat. Hist. 
 
 vol. 6. p. 212. 1850. 
 P. flavescens Stevens & Hall, Diseases of Econ. PI. f. 187. 
 
 Not forked, the moderate branches without cataphyls, dioecious. In- 
 ternodes rather short (2-5x20-40 mm.), subcanescently tomentose like 
 the foliage. Leaves obovate to oblanceolate, very obtuse, 1.5-2.5x3-5 cm., 
 cuneately subpetioled for about 5 mm. Spikes mostly solitary, moderate 
 (15-20 mm., lengthening to 30-40 mm. in fruit), canescent, with some 
 4 or 5 joints rather clavately 6- to 12-flowered when pistillate or oblong 
 and 20- to 30-flowered when staminate: peduncle 2-3 mm. long: scales 
 tomentose. Fruit white, subglobose, glabrous, about 5 mm. in diameter, 
 in rather close whorls : sepals nearly or quite glabrous, closely inflexed. 
 Plates 5, 29, 30, 31. 
 
 East Texan region, on Celtis, Madura, Quercus, Ulmus and, very con- 
 spicuously, Prosopis* The type from Texas. 
 
 Specimens examined: UNITED STATES. TEXAS. Vicinity of New 
 Braunfels (Lindheimer, 406, 1846 the type; 115, 1120, 227, 1121, 1849; 
 445, 1122, 1850). Comancheries (Berlandier, 678, 2088, 1828). Bexar 
 Co. (Jermy, 1904). San Antonio (Ferriss). Gillespie Co. (Jermy). 
 Nolan Co. (Broadhead, 1887). Lampasas Co. (Joor). Melissa (Pammel, 
 1888). Dallas Co. (Reversion, 837}. Austin (Heald, 1909, 1911; Long, 
 15103; Hedgcock, 422, 427). Mitchell Co. (Holstein). West Texas 
 (Soulard, 1882). Davis Mts. (Tracy & Earle, 188). Fayette Co. (Mat- 
 tlies,573). MEXICO. CHIHUAHUA. Ciudad Juarez (Stearns, 1911). 
 
 Phoradendron Engelmanni Claviger n. var. 
 
 Differing from the type in its more elongated fruiting spikes (40-50 
 mm.) with distinctly separated whorls of fruit. Plates 5, 21. 
 
 With the type, into which it probably merges, chiefly on Prosopis. 
 The type from Texas. 
 
 *A list and analysis of host plants in Texas is given by Bray, Bull. Bur. PI. Ind., 
 U. S. Dep. Agr. No. 166. p. 22. 
 
36 THE GENUS PHOEADENDEON 
 
 Specimens examined: UNITED STATES. TEXAS. Millett (Trelease, 
 1897, the type). Waco (Heller, 1376). Bluffdale (Ward, Oct. 12, 
 1891, on Quercus). Bexar Co. (Jermy, 1904). Kaufman Co. (Tyler, 
 1904) . Big Spring (Rose, Standley & Russell, 12211 ) . Without locality 
 (Menzel). Austin (Long, 12041, on Celtis). 
 
 Phoradendron Greggii n. sp. 
 
 Phoradendron flavescens tomentosum Engelmann in Watson, Bot. Calif, 
 vol. 2. p. 105. 1880. 
 
 Not forked, the rather short and slender branches without cataphyls, 
 dioecious. Internodes rather short (2x20-30 mm.), densely velvety to- 
 mentose, like the foliage. Leaves oblanceolate-elliptical or broader, very 
 obtuse, 1-1.5x2.5-3 or even 2x4.5 cm., cuneately subpetioled for 2-4 mm. 
 Spikes often clustered, long (30-60 mm.), tomentose, with 4 or 5 joints 
 somewhat clavately about 8-flowered when pistillate and oblong and 30- 
 or 40-flowered when staminate: peduncle 2-5 mm. long: scales velvety - 
 tomentose. Fruit white, subglobose, glabrous, about 5 mm. in diameter, 
 in rather distinct whorls : sepals more or less puberulent, closely inflexed. 
 Plate 22. 
 
 Chihuahuan region ( ? exclusively) on Acacia and Prosopis. The 
 type from northern Mexico. 
 
 Specimens examined : MEXICO. Rinconada, between Monterrey and 
 Saltillo (Gregg, 31, pistillate, ,254, staminate, 1847, the types). Topo 
 Chico, Monterrey (Herb. Field Mus.). Jimulco (Pringle, 845). With- 
 out data (? Pringle, 1883). Pena, Coahuila (Purpus, 1106). 
 
 Phoradendron thyrsoideum n. sp. 
 
 Not forked, the moderate branches without cataphyls, dioecious. In- 
 ternodes rather short (2-3x10-20 mm.), rather persistently stellate- vel- 
 vety like the foliage. Leaves oblanceolate-spatulate, very obtuse, about 
 1x3-5 cm., cuneately subpetioled for about 5 mm. Spikes mostly solitary, 
 short (scarcely 10 mm., lengthening to 20 mm. in fruit), tomentose, with 
 3 or 4 nearly globose joints about 8-flowered when pistillate, clavately 
 lengthening in the somewhat thyrsoidally clustered fruiting spikes : ped- 
 uncle about 3 mm. long: scales staring-puberulous. Fruit white, sub- 
 globose, glabrous, about 4 mm. in diameter, in rather close whorls : sepals 
 glabrescent, closely inflexed. Plate 23. 
 
 Eastern Sierra Madre region. The type from eastern Mexico. 
 
 Specimens examined: MEXICO. Victoria (Palmer, 103, 1907, the 
 type) . Gomez Farias (Palmer, 291). San Luis Potosi (Parry & Palmer, 
 
BOREALES FLAVESCENTES 37 
 
 Phoradendron colipense n. sp. 
 
 Not forked, the rather long branches without cataphyls, dioecious. 
 Internodes moderate (2-3x20-40 mm.), like the foliage from coarsely 
 hispid with short yellow hairs becoming nearly glabrous. Leaves obliquely 
 oblanceolatc-elliptical, very obtuse, 1.5-2.5x5-8 cm., cuneately subpetioled 
 for about 8 mm. Spikes mostly clustered, moderate (35 mm.), yellow- 
 hispid, with 5 or 6 oblong joints about 30-flowered when staminate: 
 peduncle 2 mm. long: scales somewhat tomentose. Pistillate flowers and 
 fruit?. Plate 23. 
 
 Eastern Sierra Madre region. The type from eastern Mexico. 
 
 Specimens examined : MEXICO. Colipa (Liebmann, 8, the type, 
 P. flavescens pubescens Oliver, Vidensk. Meddel. Naturalist. Foren. 
 Kjobenhavn. 1864. p. 176. 
 
 PHORADENDRON MACROPHYLLUM Cockerell. 
 
 Phoradendron macrophyllum Cockerell, Amer. Nat. vol. 34. p. 293. 1900. 
 
 P. flavescens macrophyllum Engelmann in Rothrock, Bot. Wheeler, p. 
 252. 1878. ( =Rothrock, Repts. upon the bot. collections, as vol. 6, 
 Rept. U. S. Geogr. Surv. . . .in charge of G. M. Wheeler). 
 
 Not forked, the rather long and stout branches without cataphyls, 
 dioecious. Internodes rather short (3-5x20-30 mm.), from sparingly vil- 
 lous becoming nearly glabrous, like the foliage. Leaves broadly elliptical- 
 obovate or nearly round, very obtuse, large, 2-4.5x2.5-6 cm., rather 
 abruptly wing-petioled for about 5 mm. Spikes often clustered, mod- 
 erate (15-30 mm., sometimes lengthening to 50 mm. in fruit), glabrate, 
 with some 4 subglobose joints about 6-flowered when pistillate, or 3-6 ob- 
 long joints 18- to 36-flowered when staminate: peduncle 2-5 mm. long: 
 scales somewhat villous. Fruit white, globose, essentially glabrous, 4-5 
 mm. in diameter, in rather close whorls : sepals glabrate, little parted. 
 Plates 5, 7, 9, 10, 34. 
 
 Sonoran region, on Alnus, Celtis, Fraxinus, Juglans, Platanus, Pop- 
 M/I/.S and Salix.* The type from Arizona. 
 
 Specimens examined: UNITED STATES. ARIZONA. Gila River (Gil- 
 bert, 104, 1873; Camp Grant (Rothrock, 362, 1874) : the types of 
 P. flavescens macrophyllum, both on Fraxinus. Bill Williams Fork 
 (Bigelow, 3, 1854). Without locality (I.Fremont, 106, 1844; Palmer, 
 1876). South of Flagstaff (Drake, 15116-7, 15120}. Beaver Creek 
 (Drake, 15121}. Santa Rita Mts. (Engelmann, 1880; Griffiths, 2678; 
 Shear, 4200, 4206}. Santa Catalina Mts. (Tourney, 2}. Chiricahua Mts. 
 (Elumer, 1520, 1523, 1533, 1946}. Tucson (Tourney, 33, 1894; Shear, 
 
 *A list of hosts probably inclusive of the next species is given by Hedgcock 
 in Phytopathology, vol. 5. p. 178. 
 
38 THE GENUS PHORADENDRON 
 
 4259; Ferriss; Lloyd, 1907). Huachuca Mts. (Wilcox, 1892; Ferriss). 
 Fort Verde (Mearns, 164). Tonto Basin (Tourney, 289). Sta. Cruz 
 River (Prince, 1884). Willow Springs Mts. (Griffiths, 3644). Dudley- 
 ville (Griffiths, 3676). Rincon Mts. (Griffiths, 1797). Beaver Creek 
 (MacDougal, 612). Dragoon Summit (Eby). Oracle (Hedgcock & 
 Long, 9692). Sedona (Hedgcock, 4924). 
 
 An almost glabrous form, f . glabrata, occurs with the type in south- 
 ern Arizona: Dudley ville (Griffiths, 3674) ; Arabaca (Griffiths, 6144) ; 
 Chiricahua Mts. (Blunter, 1517, 1534, 1535; Burrall, 1126) ; on the Boun- 
 dary, south of Bisbee (Mearns, 891) ; and from S. Pedro to Fronteras, 
 Sonora, Mexico (Harrtman, 946). 
 
 Phoradendron macrophyllum circulars n. var. 
 
 Leaves round, small, 1.5-2 cm. in diameter ; otherwise resembling the 
 type, with which it occurs. Plate 35. 
 
 Specimens examined: UNITED STATES. ARIZONA. Sta. Rita Mts. 
 (Griffiths & Thornber, 191, the type). 
 
 Phoradendron macrophyllum Jonesii n. var. 
 
 Leaves oblanceolate-obovate, small, scarcely 1.5-2x3-4 cm., resembling 
 those of P. Engelmanni; the young growth yellowish- or gray-tomentose. 
 In the region of the type. Plate 35. 
 
 Specimens examined: UNITED STATES. ARIZONA. Bowie (Jones, 
 4279, the type; 4281, in leaf -shape approaching var. circulare). 
 
 Phoradendron Cockerellii n. sp. 
 
 Not forked, the rather long and stout branches without cataphyls, 
 dioecious. Internodes rather short (2-4x20-40 mm.), quickly glabrate 
 like the foliage. Leaves broadly elliptical to oblanceolate, very obtuse, 
 1.5-2x3.5-5.5 cm., cuneately subpetioled for 5-10 mm. Spikes mostly sol- 
 itary, moderate (15-30, or lengthening to 40 or 50 mm.), glabrous, with 
 about 4 joints clavately about 6-flowered toward the top when pistillate 
 and ellipsoidal and 20- to 30-flowered when staminate : peduncle 4-5 mm. 
 long : scales and receptacular cups ciliate. Fruit white, globose, glabrous, 
 about 4 mm. in diameter, in distinct whorls : sepals glabrous, closely in- 
 flexed. Plates 5, 36. 
 
 Southern Rocky Mountain region, characteristically on Populus and 
 Salix, but also on Fraxinus. The type from New Mexico. It was this 
 New Mexican form which Professor Cockerell actually had before him 
 when applying to the preceding species the binominal P. macrophyllum 
 as a substitute for P. flavescens macrophyllum Engelmann. 
 
BOEEALES FLAVESCENTES 39 
 
 Specimens examined : UNITED STATES. NEW MEXICO. Mesilla Park 
 (Standley, 525, 1906; Wooton, 1902, 1906; Hedgcock, 9953}. Santa Fe 
 to the Rio Grande (Wislizenus, 41, 1846-7). Without locality (Wright, 
 15, 1851 ; 1785, 1851-2). Silver City (Metcalfe, 31 the type). Caruth- 
 ers Ranch (Hedgcock & Long, 9861). Mangas Springs (Metcalfe, 26, 
 more persistently villous than usual). Mimbres River (Vreeland, 808). 
 Las Graces (Simpson; Lay, 1903). Rincon (Blumer, 1905). Turkey 
 Creek Canon ( f Hedgcock, 841). TEXAS. El Paso (Havard, 1881 ; Jones, 
 1884). Eldon (Havard, Nov. 1881). MEXICO. CHIHUAHUA. Ciudad 
 Juarez. (Stearns, 1911). 
 
 Phoradendron coloradense n. sp. 
 
 Not forked, the rather long and slender branches without cataphyls, 
 dioecious. Internodes rather short (2x30-40 mm.), from velvety becom- 
 ing glabrous like the foliage. Leaves oblanceolate-obovate, very obtuse, 
 1.5-2x3-6 cm., cuneately slender-petioled for about 10 mm. Spikes mostly 
 solitary, rather long (30-50 mm.), essentially glabrous, with about 3 
 joints clavate and some 6-flowered when pistillate or oblong and 20- to 
 30-flowered when staminate: peduncle 5-10 mm. long: scales ciliate. 
 Fruit white, subglobose, glabrous, about 5 mm. in diameter, in rather 
 distinct whorls : sepals glabrous, usually closely inflexed. Plate 37. 
 
 Sonoran region ( ? exclusively) on Prosopis. The type from Cali- 
 fornia. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Fort Yuma 
 (du Barry, Feb. 4, 1865, the type; Thomas). Colorado River (Schott). 
 The Needles (Jones, May 1884). A plant from Cameron's ranch, La- 
 guna, Cal., with leaves ranging from nearly round to obovate, 3-4x5-6 
 cm. (Schoenfeldt, 3687), doubtless also belongs here. 
 
 Phoradendron longispicum n. sp. 
 
 Not forked, the rather long but slender branches without cataphyls, 
 dioecious. Internodes rather long (2-3x40-50 mm.), subcanescently vel- 
 vety-tomentose, like the foliage, or the latter glabrate and rather glossy. 
 Leaves elliptical-obovate to oblanceolate, very obtuse, 2-3.5x4-6 or even 
 7 cm., cuneately rather stout-petioled for about 10 mm. Spikes some- 
 times clustered, moderate (15-30 mm., lengthening to 40 mm. in fruit), 
 short- villous, with 3-5 joints clavately about 12-flowered when pistillate 
 and oblong and about 20-flowered when staminate: peduncle 3-6 or 10 
 mm. long : scales short-villous and ciliate. Fruit white, subglobose, gla- 
 brous, about 4 mm. in diameter, in rather distinct whorls: sepals short- 
 villous at base, nearly meeting. Plates 38, 39. 
 
40 THE GENUS PHOEADENDBON 
 
 Central California!! region, on Aesculus, Alnus, Fraxinus, Juglans, 
 Platanus, Populus, Robinia and Salix: apparently rarely on Quercus* 
 The type from California. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Lake Co. 
 (Bolander, 2670). Sacramento River (Wilkes Expedition, 1316, the 
 type, as also of P. flavescens quinquenervium Torr. in herb.). Kaweah 
 (Hopping, 263). Visalia (Rattan, 1912). Araquipa Rancho (Jepson, 
 1S94). Vacaville (Jepson, 1894; Plait, 1894). Putah Creek (Steiger, 
 1894). Kern Co. (Grinnell, 399, 402). Ventura Co. (Abrams & Mc- 
 Gregor, 33, 49). Mendocino (Brown, 921). Chico (Griffiths, 1912). 
 San Gabriel (Brewer, 113). San Bernardino (8. B. & W. F. Parisli, 
 680). Lytle Creek Canon (Abrams, 2749; Spaulding, 299-301; Graves, 
 1697). Santa Monica Range (Hasse, 4626, 1889, 1893). Pasadena 
 (Jones, 3028, etc.). San Bernardino Co. (J. F. James, 1879). Los An- 
 geles Co. (Braunton, 792). San Diego Co. (Alderson, 705; Stokes, 1895). 
 Temecula (Leiberg, 3215). Claremont (Chandler, 1897). Without lo- 
 cality (Wright, 1853-6; Vasey, 1875, 1880). Mohave Desert (Saunders, 
 1906). ARIZONA. Sedona (Hedgcock, 4923). 
 
 Phoradendron longispicum cyclophyllum n. var. 
 
 Differs from the type, with which it occurs, in its smaller charac- 
 teristically orbicular leaves. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Soland Co. 
 (Jepson, 1894, the type). 
 
 PHORADENDRON VILLOSUM Nuttall. 
 
 Plioradendron villosum Nuttall, Journ. Acad. Nat. Sci. Philadelphia, n. s. 
 vol. 1. p. 185. 1848. Cannon, Bull. Torr. Bot. Cl. vol. 28. p. 374. 
 pi. 27-28. 
 
 P. flavescens villosum Engelmann in Rothrock, Bot. Wheeler, p. 252. 
 ( = Rothrock, Repts. upon the bot. collections, as vol. 6, Rept. U. S. 
 Geogr. Surv. ... in charge of G. M. Wheeler) 1878, as to the West- 
 Coast plant. 
 
 Viscum villosum Nuttall in Torrey & Gray, Fl. vol. 1. p. 654. 1840. 
 
 Not forked, the rather short stout branches without cataphyls, dioe- 
 cious. Internodes short (2-4x20-25 mm.), densely short- villous like the 
 foliage. Leaves oblanceolate-obovate, very obtuse, 1.5-2 or rarely 3 x3-4 
 or even 5 cm., cuneately subpetioled for 3-5 mm. Spikes often clustered, 
 short (10-15 mm., scarcely exceeding 20 mm. in fruit), short-villous, 
 with about 3 short swollen joints, some 6-flowered when pistillate and 
 
 *See Hedgcock, Phytopathology, vol. 5. p. 178, for hosts possibly inclusive of 
 the following species. 
 
BOEEALES FLAVESCENTES 41 
 
 12-flowered when staminate : peduncle 2-3 mm. long : scales villous-tomen- 
 tose. Fruit white, from elongated becoming subglobose, somewhat short- 
 villous at top, about 4 mm. in diameter, in close whorls: sepals rather 
 villous, somewhat parted. Plates 1, 5, 6, 7, 10, 40. 
 
 Californian region, usually on Quercus but also on Acacia, Aesculus, 
 Arctostaphylos, Persica, Populus, Rhus, Robinia, Salix and Umbellula- 
 ria* The type from Oregon. 
 
 Specimens examined : UNITED STATES. OREGON. Wahlamet Woods 
 (Nuttall, 1834, the type). Without locality (Hall, 456; Finley, 1900). 
 Roseburg (Engelmann). Waldo (Howell, 1884). Grant's Pass (How- 
 ell, 1264). Gold Hill (Walpole, 152). Ashland (Walpole, 380). Cen- 
 tral Point (Ashworth, 147). CALIFORNIA. San Francisco Bay (Wilkes 
 Expedition, Itfff7, 1853-4). Oakland (HUlebrand, 1863). Lake Co. (Bo- 
 lander, 2671). Upper Sacramento (Wilkes Expedition, 1772). Napa 
 Valley (Bigelow, 1854). Ukiah (Blasdale, 1019). Salinas Valley (Brew- 
 er, 564; Vasey, 1880). Palo Alto (Baker, 203). Fort Tejon (Horn, 
 1863). Placerville (Bolander; Rattan). Scott River (Hedgcock, 1893). 
 Sicon Valley (Lemmon, 1875). Siskyou Co. (Pond, 189, 192; Hedg- 
 cock, 1896; Butler, 565). Plumas Co. (Austin). Butte Co. (Austin, 
 698; Drew, 1889). Raymond (Hedgcock, 4840). Chico (Bidwell, 1890). 
 Little Chico (Bruce, 1786) . Sierras (Bessey,lS15.) Sugar Pine (Scher- 
 fee, 1914). Mendocino Co. (Brown, 953; Chesnut, 595; Clarke, 1-5). 
 Asti (Pammel & Davis, 114). Vacaville (Jepson, 1894). Sonoma Co. 
 (Heller & Broivn, 5036). Northfork (Jack, 1907). Amador Co. (Braun- 
 ton, 1258; Hansen, 720). Emigrant Gap (Jones, 1882). Byron Gulch 
 (Ward, 116). Shasta Co. (Baker & Nutting, 1894). Calaveras Grove 
 (Hutchens, 1900). Mt. Hamilton (Chandler, 6043; Blankinship, 1891). 
 Kaweah River Basin (Hopping, 264). Mariposa Co. (Hollick, 1880). 
 Hood's Peak (Michener & Bioletti, 1893). El Portal (Hottes, 1914). 
 San Luis Obispo Co. (Barber, 1901). Sta. Barbara (Elmer, 3794). Sta. 
 Clara Co. (Davy, 551; Elmer, 1758). Auberry (Jordan, 8296 on Arc- 
 tostaphylos, 8332 on Rhus). San Bernardino Co. (Parish, 1073; 
 Abrams, 2687, 2749). Los Angeles Co. (Grant & Wheeler, 979=6243). 
 Wilson's and Baldy Trail (McClatchie, 1893). Riverside (Grant, 4517, 
 4533). San Jacinto Mts. (Hall, 2531; Gregory, 1890; Berg, 1904). 
 Sta. Rosa Mountain (Smith, 5466). San Diego Co. (Mearns, 3767; 
 Palmer, 440; Chandler, 5456; Stokes, 1895). Laguna (Mearns, 3617). 
 Without locality (Fitch, 1849; Kuntze, 1874). MEXICO. LOWER CALI- 
 FORNIA. Encenada (Jones, 3734). Mountains (Orcutt, 1310a). Nach- 
 oguero Valley (Schoenfeldt, 3400). 
 
 *Cf. Cannon, Bull. Torr. Bot. Cl. vol. 28. p. 374. Hedgcock, Phytopathology, 
 vol. 5. p. 179. 
 
42 THE GENUS PHOEADENDRON 
 
 Phoradendron villosum rotundifolium n. var. 
 
 Differs from the type in its small orbicular-obovate leaves, l-l.2xl.5-2 
 cm. Plate 41. 
 
 Southern range of the type, chiefly on Platanus and Quercus. 
 
 Specimens examined: UNITED STATES. CALIFORNIA. Sta. Barbara 
 (Elmer, 3794 in part, the type) . Jolon, Monterey Co. (Eastwood, 1894) . 
 CajonPass (Bigelow, 7; Cooper, June 8, 1861; Trelease, 1892). 
 
 Phoradendron tomentosum Oliver 
 
 Phoradendron tomentosum Oliver, Vidensk. Meddel. Naturahist. 
 
 Foren. Kjobenhavn. 1864. p. 176. 
 Viscum tomentosum de Candolle, Prodromus. vol. 4. p. 670. 1830. 
 
 Not forked, the rather short stout branches without cataphyls, dioe- 
 cious. Internodes rather short (2-3x10-35 mm.), densely velvety-tomen- 
 tose like the foliage, with at first yellow hairs. Leaves obovate-oblan- 
 ceolate, very obtuse, 1-2x2-3.5 cm., involutely contracted rather than 
 petioled for about 3 mm. Spikes somewhat clustered, moderate (10 or 
 15 to 20-35 mm.), velvety-tomentose, with about 3 swollen joints some 
 8-flowered when pistillate and 12- to 30-flowered when staminate : pedun- 
 cle 2-3 mm. long : scales tomentose. Fruit white, subglobose, nearly gla- 
 brous, scarcely 4 mm. in diameter : sepals short- villous at base, more or 
 less meeting. Plate 42. 
 
 Mexican tableland, on Celtis, Prosopis, Quercus, etc. The type from 
 central Mexico. 
 
 Specimens examined: MEXICO. "Real de Catone" (Berlander, 1364, 
 1839, the type of V. tomentosum as also of V. mimosearum Moricand in 
 herb.). Banos del Grande near Real del Monte (Ehrenberg) . Cedros 
 (Lloyd, 147; Kirkwood, 147; Lloyd & Kirkwood, 15}. Durango ( ? Pal- 
 mer, 777, a very yellow- tomentose specimen with some leaves subacute. 
 
 Phoradendron pubemlum n. sp. 
 
 Not forked, the rather long and slender branches without cataphyls, 
 dioecious. Internodes long (2-3x30-60 mm.), minutely rusty-pubescent 
 like the foliage. Leaves oblanceolate, very obtuse, 1.5-2x4-7 cm.), cune- 
 ately rather slender-petioled for 5-10 mm. Spikes usually solitary, mod- 
 erate (30 mm.), pubescent, with about 4 ellipsoidal joints covered by 
 some 12 flowers when pistillate : peduncle 2-3 mm. long : scales and recep- 
 tacular cups rusty-ciliate. Fruit ? : sepals pubescent. Plate 43. 
 
 Western Sierra Madre region of Mexico ( 1 exclusively) on Legumin- 
 osae. The type from western Mexico. 
 
BOKEALES FLAVESCENTES 43 
 
 Specimens examined : MEXICO. Barrancas between Guadalajara and 
 Topic (Gregg, 895, 1849, the type). 
 
 A form with stout internodes scarcely 10 mm. long and smaller 
 scarcely petioled leaves scarcely 1x3 cm., from the Sierra Madre of Chi- 
 huahua, may be known as P. puberulum chihuahuense (Endlich, 1220, 
 1906, the type; 1170; 1267; Jones, Sept. 14, 1903, at Guayanopa 
 Canon). Plate 43. 
 
 Phoradendron Coryae n. sp. 
 
 Not forked, the rather long and stout branches without cataphyls, 
 dioecious. Intemodes moderately long (2-5x25-40 mm.), densely short 
 stellate-tomentose like the foliage. Leaves round-ovate, broadly ellip- 
 tical or exceptionally obovate, very obtuse, 1.5-3x2.5-3.5 cm., rather 
 abruptly stout-petioled for about 3 mm. Spikes mostly clustered, rather 
 short (15-20 mm.), tomentose, with 3 or 4 swollen joints about 12-flow- 
 ered when pistillate and 18- to 36-flowered when staminate : peduncle 2-3 
 mm. long : scales tomentose. Fruit white, round-ovoid, pubescent above, 
 small (3 mm.), in close whorls: sepals pubescent, erect and widely 
 parted. Plates 5, 10, 44. 
 
 Sonoran region ( ? exclusively) on Quercus. The type from Arizona. 
 
 Specimens examined : UNITED STATES. ARIZONA. White Cliff Creek 
 (Bigelow, 8, 1854). Pass of Mt. Hope (Bigelow, 9, 1854). Fort Whip- 
 pie and Prescott (Coues & Palmer, 323; Tourney, 1894; Cohoon, 7; Miss 
 Kate T. Cory, 1911 ; Hedgcock, 4853, 15100} . South of Flagstaff (Drake, 
 15115). Camp Apache (Girard; Rothrock, 262; Gilbert, 1874; Hedg- 
 cock & Long, 9686, 9688). Mesa south of Black River (Rothrock, 794). 
 Santa Rita Mts. (Engelmann; Pringle, 1881; TJiornber, 100; Tourney, 
 1894). Rincon Mts. (Blumer, 3601). Pima Canon (Griffiths, 2616). 
 Oracle (Jones, 1903; Hedgcock & Long, 9677-8). San Carlos Reserva- 
 tion (Coville, 1915).. Copper Basin (Tourney, 288). Crown King (Hedg- 
 cock, 4872-3) . Strawberry Valley (Tourney, 290) . Bowie (Jones, 4253) . 
 Cosnino (Jones, 4041). Garcia Forest (Hedgcock, 843). Tonto Basin 
 (Coville, 1074). Sta. Catalina Mts. (Griffiths, 3454; Selkirk, 1771-2). 
 Huachuca Mts. (Wheeler; Wilcox, 1893, 391, 458; Mearns, 2479). Bea- 
 ver Creek (Drake, 15115). Without locality (Wheeler, 1872). Chiri- 
 cahua Mts. (Blumer, 1514, 1516 the type, 1521, 1976; PUsbry, 1906 ; 
 Burrall, 1125). Sedona (Hedgcock, 4916, 4921-2, 4940). Nogales 
 (Hedgcock, 842) . NEW MEXICO. Dog Mts. (Mearns, 2395, 2427). Burro 
 Mountains (Rusby, 389). Organ Mountains (Wooton, 127; 1903 ; Stand- 
 ley, 1906). Dona Ana Mts. ( Wooton & Standley, 1906). Filmore Canon 
 (Wooton, 1899). Black Range (Metcalfe, 925). Santa Rita (Mulford, 
 (170). Hillsboro to Lake Valley (Diehl, 570). Gila River (Vreeland, 
 807) . Gila Forest (Hedgcock, 9860; Munro, 15109, 15110) . Fort Bayard 
 
44 THE GENUS PHORADENDRON 
 
 (Hedrick, 181). Silver City (Hedgcock & Long, 9855). Grant Co. (Blu- 
 mer, 129, 197) . Magdalena Mts. (Herrick & Herrick, 133) . Pinos Altos 
 (Hedgcock, 815-7; Hedgcock & Long, 9830-2). Without locality (Wright, 
 1786, 1851-2). MEXICO. SONORA. Nogales (Mearns, 2643). San Jose 
 Mts. (Mearns, 1633, 1760). San Luis Mts. (Mearns, 391, 2528). LOWER 
 CALIFORNIA. Rancho Viejo ( ? Brandegee, 1889) . 
 
 Specimens referred here that are prevailingly narrower-leaved than 
 usual though otherwise not closely alike, f . stenophylla, occur from Ari- 
 zona (Pajarito Mts., Trelease, 362; Chiricahua Mts., Pilsbry, 1906; Blu- 
 mer, 1531), and New Mexico (Silver City, Greene, 1880). To this per- 
 haps, is referable a specimen from the Sierra de la Laguna, Lower Cali- 
 fornia (Brandegee, Mar. 24, 1892), not readily placeable elsewhere. 
 
 Phoradendron Havardianum n. sp. 
 
 Not forked, the rather short but stout branches without cataphyls, 
 dioecious. Internodes short (2-3x20 mm.), rather persistently minutely 
 stellate-tomentose like the foliage. Leaves obovate-orbicular or elliptical, 
 very obtuse, small, scarcely lxl.5-2 cm., rather abruptly subpetioled for 
 about 2 mm. Spikes solitary, short (scarcely 10 mm.), puberulous, with 
 2 or 3 joints about 20-flowered when staminate : peduncle 2 mm. long : 
 scales puberulous. Fruit white, subglobose, glabrous, 3 mm. in diameter : 
 sepals pubescent at least at base, suberect. Plate 45. 
 
 Chihuahuan region ( ? exclusively) on Quercus* The type from 
 Texas. 
 
 Specimens examined: UNITED STATES. TEXAS. Guadalupe Mts. 
 (Havard, 82, Oct. 1881, the type). Cornudos Mts. (Havard, 84). Hueco 
 Tanks ( ? Mulford, 141). "Western Texas to El Paso, New Mexico" 
 ( ? Wright, 632, 1849 ) . " California ' ' (Bigelow, 1853-4) . 
 
 Phoradendron Wilkinson! n. sp. 
 
 Not forked, the rather short and slender branches without cataphyls, 
 dioecious. Internodes short (2x10 mm.), minutely stellate-tomentose like 
 the foliage. Leaves obovate-orbicular or broadly elliptical, very obtuse, 
 small, l-l.5xl.5-2 cm. Spikes solitary, rather short (15-20 mm.), some- 
 what short-villous, with 3 or 4 ellipsoidal joints 14- to 20-flowered when 
 staminate : peduncle 2 mm. long : scales villous. Fruit ? : sepals glabrous. 
 Plate 45. 
 
 Chihuahuan region. The type from Chihuahua. 
 
 Specimens examined : MEXICO. Sta. Eulalia Mts. ( Wilkinson, Apr. 
 3. 1885, the type). 
 
 *For a list of hosts see Hedgcock, Phytopathology, vol. 5. p. 178. 
 
BOREALES BRACHYSTACHYAE 45 
 
 4. BRACHYSTACHYAE. 
 
 Leaves usually relatively narrow, never greatly elongated or large. 
 Shoots neither angled nor as a rule compressed. Mexico. 
 
 Persistently woolly. P. lanatum. 
 
 Pubescence usually sparing and evanescent. 
 Fruit villous or hispid. 
 
 Leaves elongated. Chiefly East Mexican. 
 
 Fruit retrorsely hispid : sepals meeting. P. Galeottii. 
 
 Fruit sparsely villous. 
 
 Sepals not meeting. East Mexican. P. Palmeri. 
 
 Sepals meeting. Lower Californian. P. peninsulare. 
 Leaves broad. Lower Californian. P. Eduardi. 
 
 Fruit glabrous or short-hairy. 
 
 Leaves sessile, subacute. P. mazatlanum. 
 
 Leaves mostly petioled, very obtuse. 
 Ample species, of the mainland. 
 
 Evanescently hispid, varnished. P. brachystachyum. 
 Densely short-villous : leaves petioled. P. tlacolulense. 
 Sparingly villous : leaves sessile. P. globuliferum. 
 
 Rather small species, of Lower California. 
 
 Leaves round-obovate, subpetioled. P. aureum. 
 
 Leaves oblong-obovate, sessile. P. brachyphyllum. 
 
 Leaves spatulate-oblanceolate. 
 Attenuate base short. 
 
 Spikes rather long (20-30 mm.). P. tumidum. 
 Spikes short (15 mm.). P. Diguetii. 
 
 Subpetiolate contraction marked. 
 
 Spikes slender, tomentose. P. peninsulare. 
 Spikes stout, glabrate. P. saccatum. 
 
 Phoradendron lanatum n. sp. 
 
 Not forked but more or less pseudodichotomous from the falling of 
 one lateral branch at a node, the rather long and slender branches with- 
 out cataphyls, dioecious?. Internodes rather short (3x20-30 mm.), 
 densely and persistently woolly with long sulphur-yellow hairs like the 
 foliage. Leaves narrowly elliptical varying into subspatulate or obovatc, 
 subacute to very obtuse, .5-.8x2-3 cm., contracted for about 1 mm. at base. 
 Spikes (young) solitary, short (10 mm.), very tomentose, with 2-4 short 
 few-flowered joints: peduncle scarcely 1 mm. long: scales concealed by 
 long hairs. Fruit subglobose, 4 mm. in diameter, slightly villous at top : 
 sepals nearly glabrous, closely inflexed. Plate 46. 
 
 Cordilleran region. The type from central Mexico. 
 
 Specimens examined: MEXICO. Mesa de Cascomate, Oaxaca (Pur- 
 pus, 2724, 1907). Hacienda Ciervo y Cadereyta, Queretaro (Rose, Paint- 
 er & Rose, 9707, the type) . 
 
46 THE GENUS PHOEADENDBON 
 
 Phoradendron Galeottii n. sp. 
 
 Not forked, the rather short and slender branches without cataphyls, 
 dioecious?. Internodes rather short (2-3x15-50 mm.), at first much com- 
 pressed, resinous-dotted, evanescently stellate-tomentose like the foliage. 
 Leaves oblanceolate-oblong, mostly obtuse, .5-1x2-5 cm., gradually nar- 
 rowed for about 5 mm. at base. Spikes mostly solitary, short (scarcely 
 15 mm. in fruit), short-tomentose, with about 3 subglobose joints some 
 12- to 18-flowered when pistillate : peduncle scarcely 2 mm. long : scales 
 finely tomentose. Fruit in congested whorls, round-ovoid, about 4 mm. 
 long, retrorsely yellow-hispid : sepals finely tomentose, closely inflexed. 
 Plate 46. 
 
 Eastern Sierra Madre region ( 1 exclusively) on Quercus. The type 
 from eastern Mexico. 
 
 Specimens examined: MEXICO. Mirador, V. C. (Galeotti, 2694, 
 1840, the type; Linden, 541; Ross, 723). Zacuapam (Pur pus, 6401). 
 
 PHORADENDRON PALMERI Greenman. 
 Phoradendron Palmeri Greenman, Proc. Amer. Acad. vol. 40. p. 28. 1904. 
 
 Not forked, the rather short branches without cataphyls, dioecious?. 
 Internodes rather short (2-5x20-30 mm.), somewhat tomentose and rather 
 persistently short-villous like the foliage. Leaves oblanceolate to ellip- 
 tical-oblong, obtuse, .5-.8x2-3.5 cm., cuneate for about 2 mm. but scarcely 
 petioled. Spikes slender, solitary, short (5 mm., lengthening to 10-20 
 mm. in fruit), loosely villous, with about 3 subglobose joints about 8-flow- 
 ered when pistillate: peduncle 1-5 or 6 mm. long: scales villous. Fruit 
 ovoid, 4 mm. long, sparsely villous: sepals glabrescent, more or less 
 parted. Plate 47. 
 
 Mexican table land. The type from eastern Mexico. 
 
 Specimens examined: MEXICO. Alvarez, S.L.P. (Palmer, 119, 1902, 
 the type). 
 
 Phoradendron Eduardi n. sp. 
 
 Not forked, the rather short stout branches without cataphyls, dioe- 
 cious?. Internodes rather short (3-4x20-30 mm.), like the foliage loosely 
 villous or glabrate but not tomentose. Leaves elliptical-obovate or ob- 
 lanceolate, very obtuse, .5-1x1.5-2 cm., cuneately sessile. Spikes stout, 
 moderate (25-35 or 40 mm. in fruit), loosely villous, with 2 or 3-6 elon- 
 gated clavate joints some 8-flowered when pistillate: peduncle 2-3 mm. 
 long: scales somewhat velvety or villous. Fruit creamy white, subglo- 
 bose, 4 mm. in diameter, villous: sepals glabrescent, erect, not meeting 
 around the thick stigma. Plate 47. 
 
 Sonoran region of Mexico. The type from Carmen Island. 
 
BOBEALES BRACHYSTACHYAE 47 
 
 Specimens examined : MEXICO. LOWER CALIFORNIA. Carmen Island 
 (Palmer, 882, Nov. 1890, the type). Todos Santos (Brandegee, 512, 
 San Jose del Cabo (Brandegee, 512). 
 
 Phoradendron mazatlanum n. sp. 
 
 Not forked, the rather long and stout branches Without cataphyls, 
 dioecious?. Internodes rather long (2-3x50-60 mm.), rather evanescently 
 and sparsely short-villous or puberulent like the foliage. Leaves sub- 
 spatulately oblong, sometimes falcate, subacute, .5-.8x3.5-4.5 cm., grad- 
 ually narrowed to the broad sessile base. Spikes mostly solitary, mod- 
 erate (20 mm.), somewhat puberulent, with about 4 joints some 10-flow- 
 ered about the middle when pistillate. Fruit ? : sepals nearly glabrous. 
 Plate 48. 
 
 Sonoran region of Mexico ( ? exclusively) on Leguminosae. The type 
 from Sinaloa. 
 
 Specimens examined: MEXICO. Mazatlan, Sinaloa (Gregg, 1202, 
 1849, the type). 
 
 PHORADENDRON BRACHYSTACHYUM Nuttall. 
 
 Phoradendron brachystachyum Nuttall, Jour. Acad. Philadelphia, n. s. 
 
 vol. 1. p. 185. 1847. 
 Viscum brachystachyum de Candolle, Prodromus. vol. 4. p. 280. 1830. 
 
 Not forked, the rather long and slender branches without cataphyls, 
 dioecious. Internodes from short (2x20 mm.) to long (3x60 mm.), some- 
 M r hat varnished, evanescently hispid like the foliage. Leaves extremely 
 variable even on the same shoot, from typically oblong-lanceolate or ob- 
 lanceolate to obovate or orbicular, the narrower forms more or less fal- 
 cate, obtuse, .5x3.5, 1.5-2x5, or 1.5x1.5 cm., cuneately narrowed rather 
 than petioled for 3-5 mm. Spikes mostly solitary, short (10 mm., scarcely 
 reaching 15 mm. in fruit), sparingly puberulent, with 2 or 3 somewhat 
 swollen joints 8- to 12-flowered when pistillate and 18- to 30-flowered 
 when staminate: peduncle 1-3 mm. long: scales nearly glabrous. Fruit 
 globose, umbonate, 3 mm. in diameter, glabrous: sepals essentially gla- 
 brous, closely inflexed. Plates 48, 49. 
 
 Mexican tableland, on Arbutus, Quercus, etc. The type from about 
 Real del Monte. 
 
 Specimens examined: MEXICO. Tampico to Real del Monte (Ber- 
 landier, the type of Viscum brachystachyum). Regla (Ehrenberg, 422 
 in part). El Sabino, Zimapan (Galeotti, 2692). Aculcingo (Liebmann, 
 7, 11, 3083, P. flavescens? and P. brachystachyum var., Oliver), Ori- 
 zaba (Mueller, 221, 1755). Sta. Fe, Valley of Mexico (Bourgeau, 572). 
 Tehuacan (Pringle, 6759, 7027; Endlich, 1899; Rose, Painter & Rose, 
 
48 THE GENUS PHORADENDRON 
 
 8973; Rose & Rose, 11260}. Tlacuiltopec (Purpus, 4087). Cholula (Ar- 
 sene, 896, 1907 ; 7, 1908). Tepoxuchil (Arsene, 10, 1908). Jordana, To- 
 luca (? Gregg, 725, 1849). Chapala, Jalisco (Diguet, 109}. Fuente, 
 Sinaloa (Rose, Standley & Russell, 13520}. Aguascalientes, Colima 
 (Kerber, 88). Guaymas, Sonora (Rose, Standley & Russell, 12574}. 
 Ixmiquilpan, Hid. (Purpus, 1441; Rose, Painter & Rose, 9160}. Above 
 Cuernavaca (Pringle, 8009, 11160}. Cerro S. Felipe, Oaxaca (Conzatti, 
 2198; Conzatti & Gonzales, 72}. Mitla to Matatlan (Conzatti & Vazquez, 
 1476} . Without locality (Graham, 231; Pavon; Aschenborn, 428} . Tzin- 
 tzuntzan (Seler, 1249}. Sierra de Parras (Purpus, 5073}. 
 
 PHORADENDRON TLACOLULENSE Loesener. 
 
 Phoradendron tlacolulense Loesener, Bull. Herb. Boissier. vol. 2. p. 536. 
 
 pi. 20. 1894. 
 Phoradendrum tlacolulense Urban, Bot. Jahrb. vol. 23. Beiblatt 57. p. 
 
 3. 1897. 
 
 Not forked, the short but slender branches without cataphyls. dioe- 
 cious. Internodes short ( 1-3x20-30 mm. ) , densely villous with short yel- 
 low hairs like the foliage. Leaves orbicular to very broadly ovate or 
 obovate, very obtuse, .5-1.7x1-2 cm., abruptly contracted to sometimes 
 connate petioles 2-3 mm. long. Spikes mostly solitary, very short (5 
 mm.), somewhat villous, with 2 or 3 swollen joints about 6-flowered: 
 peduncle scarcely 1 mm. long. Fruit round-ovoid, about 4x5 mm., gla- 
 brous : sepals inflexed. Plate 50. 
 
 Cordilleran region. The type from Oaxaca. 
 
 Specimens examined : MEXICO. Mitla, Oax. (Seler, 119, the type). 
 Near Agua Escondida (Seler, 1763}. 
 
 Phoradendron globuliferum n. sp. 
 
 Not forked, the rather short branches without eataphyls, dioecious?. 
 Internodes short (2-3x10-20 mm.), more or less flattened, somewhat short - 
 villous like the foliage. Leaves shortly elliptical-obovate, very obtuse, 
 .5-1x2 cm., sessile. Spikes solitary, short (5 mm., lengthening to 20 mm. 
 in fruit), sparingly short-villous, with about 2 subglobose joints about 
 8- to 16-flowered when pistillate: peduncle scarcely 2 mm. long: scales 
 sparingly villous. Fruit (immature) subglobose, smooth, small: sepals 
 somewhat villous at base, suberect. Plate 51. 
 
 Sonoran region of Mexico. The type from Sonora. 
 
 Specimens examined: MEXICO. Guaymas, Sonora (Palmer, 88, 1887, 
 the type; Brandegee, 1892). 
 
BOEEALES BRACHYSTACHYAE 49 
 
 Phoradendron aureum n. sp. 
 
 Not forked, the rather short branches without cataphyls, dioecious. 
 Internodes short (2x10-20 mm.), sparsely short-villous like the foliage. 
 Leaves spatulate-obovate, very obtuse, .6-1x1-2 cm., cuneately subpetioled 
 for about 3 mm. Spikes solitary, golden, short (10-15 mm.), somewhat 
 velvety, with 2 or 3 rounded joints 12- to 24-flowered when staminate : 
 peduncle 2 mm. long : scales conspicuously ciliate. Fruit?. Plate 52. 
 
 Sonoran region of Mexico. The type from Lower California. 
 
 Specimens examined: MEXICO. Sta. Cruz, L6wer California (Rose, 
 16848, Apr. 16, 1911, the type). 
 
 Phoradendron brachyphyllum n. sp. 
 
 Not forked, the short stout branches without cataphyls, dioecious?. 
 Internodes rather short (2-4x10-30 mm.), sparsely short-villous like the 
 foliage. Leaves (represented only near the ends of the branches, and 
 perhaps much larger when fully developed) obovate-oblong, obtuse, 
 scarcely .3x1 cm., sessile. Spikes mostly solitary, short (scarcely 10 
 mm.), sparingly short-villous, with about 2 ellipsoidal joints about 6-flow- 
 ered when pistillate: peduncle 2 mm. long: scales rather conspicuously 
 ciliate. Fruit ? : sepals sparingly hispid at least near the base. Plate 53. 
 
 Sonoran region of Mexico. The type from Margarita Island. 
 
 Specimens examined : MEXICO. Margarita Island, Lower California 
 (Rose, 16293, Mar. 16, 1911, the type). 
 
 Phoradendron tumidum n. sp. 
 
 Not forked, the moderate branches without cataphyls, dioecious. In- 
 ternodes rather long (3-4x40-50 mm.), rather sparsely short-villous like 
 the foliage. Leaves oblanceolate, very obtuse, .7x2.5-3 cm., cuneately 
 subsessile. Spikes solitary, long for the group (15-25 or 30 mm.), spar- 
 ingly short-villous, with about 3 ellipsoidal joints some 30- to 60-flowered 
 when staminate, the lowest joint sometimes swollen to 5 mm. in diameter: 
 peduncle 2 mm. long : scales conspicuously ciliate. Fruit ? : sepals some- 
 wliat hispid or villous. Plate 53. 
 
 Sonoran region of Mexico. The type from Lower California. 
 
 Specimens examined : MEXICO. LOWER CALIFORNIA. Espiritu Santo 
 (Rose, 16862, Apr. 18, 1911, the type). La Paz (Brandegee, 1892). 
 
 PHORADENDRON DIGUETII Van Tieghem. 
 
 Plwradendron Diguetii Van Tieghem, Bull. Mus. Hist. Nat. Paris, vol. 1. 
 p. 31. 1895. 
 
 Not forked, the moderate branches without cataphyls, dioecious. In- 
 ternodes moderate (2x20-30 mm.), from sparingly velvety becoming gla- 
 
50 THE GENUS PHOEADENDEON 
 
 brous like the foliage. Leaves oblong-spatulate, obtuse, .5x3 cm., euneately 
 attenuate for about 5 mm. Spikes solitary, short (15 mm.), very spar- 
 ingly short-tomentose, with about 3 subclavate-oblong joints some 24- 
 flowered when staminate : peduncle 3 mm. long. Fruit ?. Plate 54. 
 
 Sonoran region of Mexico. The type from Lower California. 
 
 Specimens examined: MEXICO. LOWER CALIFORNIA. Without fur- 
 ther indication (Diguet, Dec. 15, 1894, on Quercus, in the herbarium of 
 the Museum at Paris, taken as the type). Magdalena Bay (Brandegee, 
 1889, on VeatcUa) . 
 
 Phoradendron peninsulare n. sp. 
 
 Not forked, the moderate branches without cataphyls, dioecious ?. In- 
 ternodes moderate (2x25-40 mm.), from gray-hispid becoming nearly 
 glabrous like the foliage. Leaves spatulate, mostly very obtuse, .5-1x1.5-3 
 cm., euneately attenuate for 5-10 mm. Spikes solitary, rather short ( 10-15 
 or 20 mm.), somewhat short-tomentose, with about 3 short clavate joints 
 about 6-flowered above when pistillate: peduncle 2-3 mm. long. Fruit 
 subglobose, sparingly white-villous, 3-4 mm. in diameter: sepals meet- 
 ing. Plate 55. 
 
 Sonoran region of Mexico. Perhaps the pistillate form of the preced- 
 ing. The type from Lower California. 
 
 Specimens examined: MEXICO. LOWER CALIFORNIA. Cape San Lu- 
 cas (Rose, 16354, May 23, 1911, the type). Carmen Island (Rose, 16617, 
 Apr. 2, 1911). San Gregorio (Brandegee, 1889 from which the fruit 
 is here described). 
 
 Phoradendron saccatum n. sp. 
 
 Not forked, the moderate branches without cataphyls, dioecious. In- 
 tcrnodes rather short (2-4x20-35 mm.), like the foliage somewhat sparsely 
 and transiently short-villous. Leaves narrowly spatulate, obtuse, about 
 .5x1.5-2 cm., contracted into a slender spreading or recurved petiole for 
 10 mm. Spikes often clustered, golden, rather short (15-20 or 25 mm.), 
 glabrate and glossy, with 3 or 4 oblong joints covered by 24-36 flowers 
 when staminate : peduncle 3 mm. long : scales forming a truncated sac. 
 Fruit?. Plate 55. 
 
 Sonoran region of Mexico ( ? exclusively) on Jatropha. The type 
 from Lower California. 
 
 Specimens examined: MEXICO. LOWER CALIFORNIA. San Josef 
 (Rose, 16562, Mar. 21, 1911, the type). Sta. Margarita Island (Bran 
 degee, 1889). 
 
BOREALES^FERRUGINEAE 51 
 
 5. FERRUGINEAE. 
 
 Leaves broad, large for the group, very obtuse, thick. Shoots neither 
 acutely angled nor much compressed. Mexican Cordillera and Western 
 Sierra Madre. 
 
 Heavy-leaved : densely rusty-villous. P. Robinsonii. 
 
 PHORADENDRON ROBINSONII (Urban). 
 
 Phoradendrum Robinsonii Urban, Bot. Jarhb. vol. 23. Beiblatt 5. p. 4. 
 1897. 
 
 Not forked, the long stout branches without cataphyls, dioecious. In- 
 ternodes rather long (3-5x40-50 mm.), at first very densely rusty-villous 
 like the foliage. Leaves broadly elliptical to oblanceolate or obovate, very 
 obtuse, 1.5-4x5-7 cm., cuneately stout-petioled for 10-15 mm. Spikes 
 often clustered, sometimes produced side by side in successive years, mod- 
 erate (20-35 mm., lengthening to 50 or even 85 mm. in fruit), villous, 
 with 5-7 rounded joints about 20-flowered when pistillate or oblong and 
 many-flowered when staminate : peduncle 3 mm. long : scales villous and 
 long-ciliate. Fruit subglobose, retrorsely long-villous or hispid, 4 mm. in 
 diameter, in approximated globose clusters 10 mm. in diameter: sepals 
 pubescent, incurved. Plates 56, 57. 
 
 Cordillera and Western Sierra Madre of Mexico ( ? exclusively) on 
 Celtis. The type from Tehuacan. 
 
 Specimens examined : MEXICO. Without locality (Karwiniski ; Hdhn, 
 1865-6, P. Hahnii Eichler in herb.). Tehuacan (Pringle, 6272, 1895, 
 the type, 9467, 13765; Rose & Hay, 5939; Rose, Painter & Rose, 9877; 
 Rose & Rose, 11259; Endlich, 1895; Purpus, 5832; Conzatti, 2199). To- 
 nila (Kerber, 87). Acapulco (Liebmann, 9, 3102, 1841, P. tomentosum 
 Oliver, Vidensk. Meddel. Naturh. Foren. Kjobenhavn. 1864. p. 176; 
 Hinds, 1841, slenderer and with thinner leaves, f. Hindsi. Plate 57). 
 
 6. VELUTINAE. 
 
 Leaves large for the group, characteristically elongated, somewhat 
 acuminately attenuate, rather thin and conspicuously nerved. Shoots 
 neither angled nor much compressed. Cordilleran region of Mexico and 
 Guatemala. 
 
 Thin-leaved : yellow- villous. P. velutinum. 
 
 PHORADENDRON VELUTINUM Nuttall. 
 
 Plwrndendron velutinum Nuttall, Journ. Acad. Philadelphia, n. s. vol. 1. 
 p. 185. 1847. 
 
 VY.sc urn velutinum de Candolle, Prodromus. vol. 4. p. 281. 1830. 
 
52 THE GENUS PHOKADENDRON 
 
 Not forked, the rather long moderately stout branches without cata- 
 phyls, dioecious. Internodes moderate (3-4x20-50 mm.), yellow- villous 
 like the foliage. Leaves falcately lanceolate, acute or rather acuminate, 
 1-2.5x7-10 cm., conspicuously nerved and veiny, cuneately narrowed to a 
 petiole 5-10 mm. long. Spikes mostly clustered, short (15-20 mm.), vil- 
 lous, with about 3 subglobose joints scarcely 20-flowered when pistillate, 
 or 4 more clavate joints about 30-flowered when staminate: peduncle 
 3 mm. long: scales villous and long-ciliate. Fruit subglobose, glabrous, 
 about 4 mm. in diameter, in compact whorls : sepals glabrate, more or less 
 parted. Plate 58. 
 
 Mexican tableland and through the Cordillera into Central America, 
 on Cornus, Crataegus, etc. The type from Toluca. 
 
 Specimens examined : MEXICO. Real del Monte ( Coulter, 21 ) . Regla 
 (Ehrenberg, 422). Queretaro (Herb. Berolin.). Toluca (Berlandier, 
 1158, the type of V. velutinum; Andrieux, 347; Holler, 410). Valley 
 of Mexico (Schmitz, 150; Schaffner, 188). Eslava (Pringle, 8058, 9509, 
 13190). Deserta Vieja (Bourgeau, 782). San Nicolas and Maromas 
 (Bourgeaii, 1004, 1116). Contreras (Endlich, 634). Salazar (Endlich, 
 1048). Canada Grande (Ross, 148). San Angel (Uhde, 1026). Zim- 
 apan (Aschenborn) . Istaccihuatl (Purpus, 1777). Sta. Ana, Puebla 
 (Arsene, 8). Chinantla (Liebmann). Without locality (Paul, Duke of 
 Wurtemberg, 1831; Schaffner, 459; Uhde, 1027). GUATEMALA. Sacate- 
 pequez. Antigua (Kellerman, 4541). 
 
 An unusually polymorphic species, the type possessing very narrow 
 and long leaves. 
 
 7. LONGIFOLIAE. 
 
 Leaves large for the group, usually greatly elongated, scarcely atten- 
 uate, rather thick, but sometimes conspicuously nerved. Shoots scarcely 
 angled but distinctly compressed at the nodes. Mountains of Mexico 
 and Guatemala. 
 
 Leaves scarcely nerved. 
 
 Broad for the group (10-25 mm.). P. scaberrimum. 
 
 Narrow (5 mm.). P. longifolium. 
 
 Leaves distinctly about 5-nerved. P. uspantanum. 
 
 Phoradendron scaberrimum n. sp. 
 
 Not forked, the long moderately stout branches without cataphyls, 
 dioecious?. Internodes moderate (4x25-60 mm.), scabrous-granular, at 
 first yellow with microscopic tomentum like the foliage, dilated below the 
 nodes to about 10 mm. Leaves narrowly lanceolate, subacute to obtuse 
 or emarginate, 1-2.5x10-16 cm., subpetiolately cuneate for 5-10 mm., 
 
BOREALES LONGIFOLIAE S3 
 
 scarcely nerved. Spikes mostly clustered, rather short (scarcely 25 mm.), 
 yellow-tomentulose, with about 3 rounded joints some 15-flowered when 
 pistillate : peduncle scarcely 3 mm. long : scales gray-tomentulose, scarcely 
 ciliate. Fruit (immature) ovoid, 3 mm. in diameter, yellow-tomentulose: 
 sepals closely inflexed. Plate 59. 
 
 Western Sierra Madre region. The type from Tepic. 
 
 Specimens examined : MEXICO. Sta. Teresa, Tepic (Rose, 3409, Aug. 
 8, 1897, the type). Colomas, Sinaloa (Rose, 1712). 
 
 Phoradendron longifolium Eichler, n. sp. 
 
 Phoradendron longifolium Eichler in v. Martius, Fl. Brasil. vol. 5. part 
 
 2. p. 107, 134 m, name only. 
 Viscum longifolium Zuccarini MS., fide Eichler, and in herb. 
 
 Not forked, the long rather slender branches without cataphyls, dioe- 
 cious?. Internodes elongated (2-4x40-75 mm.), resinous-dotted, micro- 
 scopically tomentose like the foliage, little dilated. Leaves linear-oblong, 
 rather acute, .5-.7xlO-14 cm., cuneately subpetioled for about 10 mm., 
 scarcely nerved. Spikes often clustered, rather short (scarcely 25 mm.), 
 tcmentose, with 3 or 4 oblong joints about 30-flowered : peduncle 2 mm. 
 long: scales tomentose and long-ciliate. Fruit?. Plate 60. 
 
 Cordilleran region of Mexico. The type from Oaxaca. 
 
 Specimens examined: MEXICO. San Pedro Nolasco, Oaxaca (Kar- 
 winski, 1833, the type: occurring in the Munich herbarium, von Mar- 
 tius' herbarium at Brussels, the Vienna herbarium, and the Delessert 
 herbarium at Geneva). 
 
 Phoradendron uspantanum n. sp. 
 
 Not forked, the rathed long and stout branches without cataphyls, 
 dioecious. Internodes rather long (4x70 mm.), evanescently sparsely 
 hispid like the foliage, more or less ancipital, dilated at the nodes to 
 nearly 10 mm. Leaves narrowly oblong-lanceolate, obtuse, about 1x15 
 cm., cuneately subpetioled for 10 or 15 mm., prominently 5-nerved and 
 somewhat veiny. Spikes more or less clustered, moderate (25-40 mm.), 
 nearly glabrous, with 3-5 narrowly oblong joints about 50-flowered when 
 staminate: peduncle 2-4 mm. long: scales glabrate, ciliate. Fruit?. 
 Plate 61. 
 
 Guatemalan region. The type from Guatemala. 
 
 Specimens examined: GUATEMALA. San Miguel Uspantan, Quiche 
 (Heyde & Lux, 3141, Apr. 1892, the type). 
 
54 , THE GENUS PHOEADENDKON 
 
 C. CALYCULATAE. 
 
 Spikes rather long, 3- to 5- jointed, each joint with numerous flowers 
 in about 12 series. Berries globose, granular-papillate, moderately small 
 (4 mm.), white?. The young growth is rather sparingly long-villous. 
 Mexico. 
 
 Stems broadly winged and nerved. ALATAE. 
 
 8. ALATAE. 
 
 Stems decussately much flattened, with nerved wings. Leaves fal- 
 cately lanceolate. Mountains of central Mexico. 
 
 Stems and leaves strongly nerved. P. calyculatum. 
 
 Phoradendron calyculatum n. nom. 
 
 Viscum falcatum Hooker, Icon. Plant, vol. 4. pi. 368. 1841. 
 Phoradendron falcatum Eichler in von Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 107. 1868. 
 
 Not forked, the very long, much compressed branches without cata- 
 phyls, dioecious. Internodes rather long (60-100 mm. or more), at first, 
 like the foliage, sparingly hairy and somewhat resinous-dotted, 2-edged. 
 from 5 mm. at base dilated to 20 mm. above. Leaves falcate, narrowly 
 lanceolate, obtuse, 1x15-25 cm., gradually narrowed into thick petioles 
 about 10 mm. long, about 5-nerved and veiny. Spikes mostly solitary, 
 moderate, (30-40 mm.), usually somewhat villous, with 3-5 oblong joints 
 some 50-flowered : peduncle 2-3 mm. long : scales typically somewhat vil- 
 lous, long-ciliate like the often deeply lobed calyx-like receptacular cups. 
 Fruit globose, 4 mm. in diameter, minutely granular-papillate: sepals 
 short, glabrate, parted.- Plates 62, 63. 
 
 Sierras and Cordillera of Mexico ( ? exclusively) on Quercus. The 
 type from eastern Mexico. 
 
 Specimens examined : MEXICO. Jalapa (Linden, 538, 1839 : Galeotti, 
 2696, 1840, the type of V. falcatum Hooker) . Oaxaca (Andrieux, 346) . 
 Sierra de S. Felipe (Pringle, 4699). Tlapancingo (Nelson, 2074). With- 
 out locality (Karwinski). Cuernavaca, Morelos (Pringle, 13189). 
 
 Strongly marked in its chief characteristics, but presenting several 
 distinguishable forms: filipes (PI. 64), with the slender staminate spikes 
 borne on a filiform peduncle 10-12 mm. long (Zacuapam, V. C., Purpus, 
 6279, 1912, with the type) ; occidentale, with longer spikes as much as 60 
 mm. long, of about 6 joints (Sierra de Nayarit, Jalisco (Diguet, 111, 
 forming hanging tufts 2 mm. or more long) ; Gonzalezi (PI. 64), with 
 shorter broader sometimes obovate leaves 1-2x3.5-5 or even 9 cm. (Canada 
 de S. Gabriel, Etla (Conzatti & Gonzales, 295). 
 
AEQUATOEI ALES DIVISION 55 
 
 II AEQUATORIALES 
 
 With cataphyls or scales constantly present toward the base of the 
 branches, exceptionally cymosely dichotomous or forking without a per- 
 current main stem. Spikes axillary and, in the cymose forms, terminal. 
 Flowers in dioecious or monoecious unisexual spikes or, mostly, with 
 staminate and pistillate flowers on the same spike. All are glabrous ex- 
 cept for the small group Anomalae. Central in Brazil, extending from 
 the Argentine to central Mexico and through the West Indies even to 
 the northern Bahamas. 
 
 Cataphyls on the basal joint only of each branch. INTERRUPTAE. 
 
 Cataphyls on alternate joints. PARADOXAE. 
 
 Cataphyls on all joints. CONTINUAE. 
 
 D. INTEKRUPTAE. 
 
 Cataphyls strictly limited to the basal joint of each branch, the 
 branches normally percurrent so that some joints occur without cata- 
 phyls. Throughout the range of the Aequatoriales. 
 
 With foliage leaves. FOLJOSAE. 
 
 Leaves reduced to scales. SQUAMOSAE. 
 
 I. FOLIOSAE. 
 
 With foliage leaves. All are glabrous except for the group Anomalae. 
 Throughout the range of the Aequatoriales. 
 
 Leaves basinerved. BASINERVIAE. 
 
 Leaves pinnately veined, never very narrow. PENNINERVIAE. 
 
 a. BASINERVIAE. 
 
 Nerves starting from the base of the leaves, rarely joined for a short 
 distance above the petiole, never with a pinnately branched midrib al- 
 though the middle nerve may be stronger and more raised than the oth- 
 ers. 
 
 Glabrous throughout, though sometimes papillate. 
 Leaves not clasping. 
 
 Fruit elongated, with erect sepals. LONGIBACCAE. 
 
 Fruit round, ovoid, or ellipsoidal. 
 
 Flowers prevailingly 2-ranked on each joint. 
 Fruit tuberculate. 
 
 Stem mostly sharply 4-angled. 
 
 Leaves obovate. Of wide range. E MARGIN AT AE. 
 Leaves elliptical or lance-oblong. 
 Argentine. ARGENTINAE. 
 
56 THE GENUS PHORADENDKON 
 
 Stem not 4-angled. Mexican or Central 
 
 American. VERNICOSAE. 
 
 Fruit not tuberculate though sometimes wrinkled 
 or minutely papillate. 
 
 Leaves equally or obscurely nerved on both sides. 
 Mexican or Central American. VERNICOSAE. 
 West Indian. 
 
 Leaves lanceolate or elliptical. 
 
 CHRYSOCARPAE. 
 
 Leaves obovate-spatulate. DOMINGENSES. 
 Of the Pacific Islands. P. Townsendi. 
 
 Leaves fine-nerved above, heavy-nerved 
 
 beneath. P. laxiflorum. 
 
 Flowers prevailingly 4-ranked on each joint. 
 
 Commonly varying into 2 ranks. See above. 
 Often varying into 4+2 series, i. e. with an extra flower 
 interposed at top between the two rows of flowers 
 over each scale of the spike, a. 
 a Fruit tuberculate. 
 
 Stein sharply 4-angled. 
 
 Leaves obovate. Brazilian. P. emarginatum. 
 
 Leaves narrowly lanceolate. West Indian. P. gracile. 
 
 Leaves subelliptical. Argentine. P. argentinum. 
 
 Stem not sharply 4-angled. 
 
 Argentine. Leaves short. ARGENTINAE. 
 
 Uruguayan. Leaves elongated. FALCIFERAE. 
 
 Mexican or Central American. ANNULATAE. 
 
 a Fruit not tuberculate. 
 
 Stem sharply 4-angled. 
 
 Sepals closely meeting in fruit. QUADRANGULARES. 
 
 Sepals not meeting : stem rhombic. RUBRAE. 
 
 Stem terete or 2-edged, at first somewhat rhombically 
 compressed or 4-lined. 
 
 Leaves drying golden, with thin revolute margin. 
 
 Brazilian. NITENTES. 
 
 Leaves not golden-glossy. 
 
 Drying thin, sharp nerved. 
 
 Mexican. NERVOSAE. 
 
 Central American. P. Cooperi. 
 
 South American. 
 
 Leaves narrow. ANGUSTIFOLIAE. 
 
 Leaves broad. ANDINAE. 
 
 West Indian. CHRYSOCARPAE. 
 
 Coriaceous or heavy. 
 
 Rather sharp-nerved. 
 
 Dimidiate. South American. DIMIDIATAE. 
 
AEQUATORIALES INTEERUPTAE 57 
 
 Obovate or oblanceolate to linear. 
 
 Stem terete. Brazilian. ENSIFOLIAE. 
 Stem compressed or 2-edged. 
 
 Brazilian. Leaves moderately 
 
 large. TURBINISPICAE. 
 
 Argentine. LIGAE. 
 
 Mexican. 
 
 Fruit ovoid. LANCEOLATAE. 
 
 Fruit globose. PRINGLEAE. 
 
 Opaque, or obscurely or heavily nerved. 
 
 Fleshy. Mexican. NERVOSAE. 
 
 Moderately coriaceous. 
 South American. 
 
 Spikes very long with large 
 
 Scales. POLYGYNAE. 
 
 Spikes not long. 
 
 Venezuelan. EIGIDAE. 
 
 Brazilian. CORIACEAE. 
 
 West Indian. 
 
 Fruit smooth. 
 
 Sepals closely meeting. 
 
 CHRYSOCARPAE. 
 
 Sepals parted. RUBRAE. 
 
 Fruit wrinkled. CAMPBELLIAE. 
 
 Central American. 
 
 Leaves elongated. CORYNARTHRAE. 
 Leaves broad or small. BREVIFOLJAE. 
 Mexican. 
 
 Leaves small or broad. BREVIFOLIAE. 
 Leaves long and narrow. PRINGLEAE. 
 Very thick and dull. ROBUSTISSIMAE. 
 
 Flowers prevailingly 6-ranked on each joint. 
 
 Varying into 2 or 4 ranks. See the preceding sections. 
 Varying into 4+2 series. 
 
 Leaves obscurely nerved. 
 
 Thick and opaque, mostly papillately dull. 
 
 ROBUSTISSIMAE. 
 Moderately coriaceous, smooth. 
 
 Spikes moderately long, with moderate 
 scales. 
 
 Venezuelan. RIGIDAE. 
 
 Brazilian. 
 
 Leaves moderate. CORIACEAE. 
 Leaves rather large. 
 
 P. lanceolato-ellipticum. 
 
58 THE GENUS PHOEADENDEON 
 
 Spikes long, with large scales. 
 
 POLYGYNAE. 
 
 Leaves heavy-nerved, fleshy. 
 
 Lanceolate. Mexican. NERVOSAE. 
 
 Dimidiate. Andean. OBLIQUAE. 
 
 Leaves sharply nerved. 
 
 Stem. 4-angled or winged. AMPLECTENTES. 
 Stem flattened or ancipital. 
 Leaves elliptical-dimidiate. 
 
 DIMIDIATAE. 
 
 Leaves lance-ovate, thin. ANDINAE. 
 
 Stem terete. ENSIFOLIAE. 
 
 Leaves clasping except in two species, thin and sharply nerved : stem 
 2- or 4- winged and acutely angled : flowers in 6 series, exception- 
 ally fewer or more. AMPLECTENTES. 
 Tomentose throughout. South American. ANOMALAE. 
 
 9. ANNULATAE. 
 
 Leaves elongated or narrow, rather thick though nerved from the 
 base. Shoots 2-edged for a time. Cataphyls a single pair on the basal 
 joint only. Flowers mostly in 4 series. Fruit warty. Southern Mexico 
 and Central America. 
 
 Leaves relatively broad (1.5-2.5 cm). 
 Petiolar contraction slender. 
 
 Leaves broadest below the middle. P. annulatum. 
 
 Leaves broadest about the middle. P. multiflorum. 
 
 Leaves cuneately subsessile. P. amplifolium. 
 
 Leaves narrow ( .4-. 8 cm.). P. carneum. 
 
 PHORADENDRON ANNULATUM Oliver. 
 
 Phoradendron annulatum Oliver, Vidensk. Meddel. Naturhist. Foren. 
 
 Kjobenhavn. 1864. p. 176. 
 PTioradendrum annulatum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 3. 
 
 1897. 
 
 Not forked but more or less pseudodichotomous from the falling of 
 one lateral branch at a node, the rather long and stout branches with 
 basal cataphyls only, dioecious?. Internodes moderate (3-4x35-50 mm.), 
 somewhat resinous-dotted like the foliage, 2-edged or at first somewhat 
 quadrate becoming terete. Cataphyls a single pair, basal, somewhat 
 tubular, white-margined. Leaves lanceolate, obtuse to acute, 1.5-2x10-12 
 cm., cuneately contracted into a slender petiole 1-2x10 mm. Spikes 
 mostly solitary, moderate (30 mm. in fruit), smooth, with about 4 clavatc 
 joints 12-18-flowered in 4 or 4-f 2 series when pistillate : peduncle 3 mm. 
 
AEQUATOEIALES ANNUL ATAE 59 
 
 long: scales and deep receptacular cups scarcely ciliate. Fruit subglo- 
 bose, reddish, 4 mm. in diameter, low-verrucose : sepals closely inflexed. 
 Plate 65. 
 
 Guatemalan and Isthmian regions. The type from Costa Rica. 
 
 Specimens examined: COSTA RICA (Oersted, 14, 3082, the type, 4, 
 3096}. GUATEMALA. Volcan Fuego, Sacatepequez (Smith, 2610). 
 
 Phoradendron multiflorum n. sp. 
 
 Not forked, the rather long and slender branches with basal cataphyls 
 only, dioecious. Internodes moderate (2-3x40-50 mm.), somewhat resin- 
 ous-dotted like the foliage, somewhat 2-edged becoming terete. Cataphyls 
 a single pair, basal, tubular-bifid, white-margined. Leaves falcately 
 lanceolate, mucronately subacute, 1 to mostly 1.5 or 2x12-18 cm., cune- 
 ately contracted into a subpetiolar base 2x10-15 mm. Spikes mostly sol- 
 itary, moderate (about 40 mm.), smooth, with about three oblong joints 
 turbinately about 20-flowered in 4 series when pistillate and some 60- 
 flowered in 6 series when staminate : peduncle 3-4 mm. long : scales and 
 receptacular cups minutely or evanescently ciliate. Fruit (immature) 
 subglobose, reddish, 3-4 mm. in diameter, low-verrucose: sepals closely 
 inflexed. Plates 66, 67. 
 
 Guatemalan region. The type from Guatemala. 
 
 Specimens examined: GUATEMALA. Volcan Acatenango, Sacatepe- 
 quez (Kellerman, 5154, staminate, and 5155, pistillate, Feb. 20, 1905, 
 the types). 
 
 Phoradendron amplifolium n. sp. 
 
 Not forked, the rather long and stout branches with basal cataphyls 
 only, dioecious?. Internodes rather long (2-5x50-80 mm.), resinous-dot- 
 ted like the foliage, 2-edged becoming terete. Cataphyls a single pair, 
 basal, somewhat tubular and white-margined. Leaves oblanceolate-oblong 
 to obovate-elliptical, very obtuse, 1.5-3x8-9 or even 12 cm., prominently 
 5-nerved and distinctly veiny, cuneately broad-based for about 10 mm. 
 Spikes clustered, moderate (about 30 mm.), smooth, with about 3 oblong- 
 fusiform joints about 12-flowered in 4-series when pistillate: peduncle 
 2-4 cm. long: scales little ciliate. Fruit subglobose, reddish, large, 6-7 
 mm. in diameter, verrucose : sepals closely inflexed. Plate 68. 
 
 Cordilleran and eastern Sierra Madre regions of Mexico. The type 
 from Puebla. 
 
 Specimens examined: MEXICO. PUEBLA. Piaxtla to Amolac (Nel- 
 son, 2018, Nov. 24, 1894, the type). Huajuapam to Oaxaca and Retlatz- 
 ingo (Nelson, 1982). Tehuacan (Liebmann, 12, 3080). VERACRUZ. Pa- 
 pantla (? Liebmann, 13, 3106). Pont de Jalapa (de Pedeguara, 2690). 
 
60 THE GENUS PHORADENDRON 
 
 PHORADENDRON CARNEUM (Urban). 
 
 Plwradeudrum carneum Urban, Bot. Jahrb. vol. 23. Beiblatt 5. p. 1. 
 1897. 
 
 Somewhat pseudodichotomous, the moderate branches with basal cata- 
 phyls only, dioecious! Internodes rather short (2-4x30-60 mm.), resin- 
 ous-dotted like the foliage, ancipital becoming terete. Cataphyls a single 
 pair, basal, somewhat tubular and white-margined. Leaves linear- 
 lanceolate, obtuse or mucronate to acute, .5-1.2x5-15 cm., rather evidently 
 3- or occasionally 5-nerved but scarcely veiny, cuneately narrowed for 
 5 to 10 mm. rather than petioled. Spikes mostly clustered, moderate 
 (20-30 mm.), smooth, with about 3 oblong joints some 8-flowered in 4 
 series when pistillate : peduncle 2-5 mm. long, bearing a few flowers when 
 elongated : scales and receptacular cups short-ciliate. Fruit globose, red- 
 dish-orange, 4-5 mm. in diameter, somewhat verrucose : sepals inflexed 
 and nearly or quite meeting. Plate 69. 
 
 Western Sierra Madre region, extending onto the tableland and 
 through the Mexican Cordillera ( ? exclusively) on Ipomoea trees. The 
 type from Jalisco. 
 
 Specimens examined: MEXICO. JALISCO. Guadalajara (Pringle, 
 1854, 1888, the type, 2668, 8647; Safford, 1438) . Zapotlan (Ross, 459} . 
 Chapala (Palmer, 719). Sayula (Jones, 570). Etzatlan (Barnes & Land, 
 284). Without locality (Diguet, 107). MICHOACAN. Morelia (Gregg, 
 745, 1849). GUANAJUATO. Guanajuato (Duges, 30, 266a). Empalme 
 de Gonzales (Rusby, 177, "on cotton- wood"). QUERETARO. Cadereyta 
 to Visaron (Rose, Painter & Rose, 9742). OAXACA (Conzatti, 1913). 
 
 10. PRINGLEAE. 
 
 Leaves linear-lanceolate, rather thick, somewhat evidently basinerved. 
 Shoots ancipital for a time. Cataphyls a single pair, on the basal joint 
 only. Flowers in 4+2 series. Fruit smooth, with closed sepals. South- 
 ern Mexico. 
 
 Fruiting spikes short (15-20 mm.). P. Pringlei. 
 
 Fruiting spikes moderate (25-35 mm.). P. Forestierac. 
 
 Phoradendron Pringlei n. sp. 
 
 Somewhat pseudodichotomous, the moderately long slender branches 
 with basal cataphyls only, dioecious. Internodes short (2x15-30 mm.), 
 varnished when young like the foliage, ancipital, somewhat dilated up- 
 wards, becoming terete. Cataphyls a single pair, 5-10 mm. above the 
 base, scarcely tubular. Leaves linear, submucronately rather acute, 
 .5-.8x7-16 cm., long-attenuate at base. Spikes usually solitary, short (10-15 
 
AEQUATORIALES NERVOSAE 61 
 
 mm.), smooth, with 2 or 3 joints globose and covered by 12-18 flowers 
 in 4+2 series when pistillate, or clavate and about 30-flowered when 
 staminate : peduncle 1-2 mm. long : scales scarcely ciliate. Fruit globose, 
 waxy, white ?, 3 mm. in diameter, smooth, overgrown by the receptacular 
 cups : sepals closely inflexed. Plate 70. 
 
 Mexican tableland ( ? exclusively) on Fraxinus. The type from Hi- 
 dalgo. 
 
 Specimens examined : MEXICO. HIDALGO. Tula (Pringle, 6630, 1897, 
 the type) . Dublan (Pringle, 11159, 13188} . 
 
 PHORADENDRON FORESTIERAE Robinson & Greenman. 
 
 Phoradendron Forestierae Robinson & Greenman, Proc. Amer. Acad. vol. 
 32. p. 36. 1896. 
 
 Little forked, the moderately long slender branches with basal cata- 
 phyls only, dioecious?. Internodes moderate (2-3x30-50 mm.), more or 
 less varnished when young like the foliage, ancipital becoming terete. 
 Cataphyls a single pair 5-10 mm. above the base, spreading. Leaves lin- 
 ear-lanceolate, obtuse or submucronate, .5-.7x5-8 cm., long-attenuate at 
 base. Spikes mostly solitary, moderate (30-40 mm.), with about 3 joints 
 swollen in the middle and about 14-flowered in 4+2 series when pistillate : 
 peduncle scarcely 2 mm. long: scales and receptacular cups somewhat 
 ciliate. Fruit subglobose, white?, 3 mm. in diameter, smooth, deeply 
 covered by the thin receptacular cups : sepals closely inflexed. Plate 70. 
 
 Cordilleran region of Mexico ( ? exclusively) on Forestiera. The 
 type from Puebla. 
 
 Specimens examined: MEXICO. PUEBLA. Tehuacan to Esperanza 
 (Pringle, 6290, 1895, the type). Near Tehuacan (Rose & Hay, 5873; 
 Endlicli, 1899a). Tepoxuchil (Arsene, 6). 
 
 11. NERVOSAE. 
 
 7 Leaves rather broad and fleshy, typically coarsely nerved from the 
 base. Cataphyls on the basal joint only, 1 or less commonly 2 or rarely 
 3 pairs. Flow r ers mostly in 4+2 series. Fruit round, nearly or quite 
 smooth, with closed sepals. Mexico. 
 
 Leaves ovate : spikes short. P. pachyartliron. 
 
 Leaves lanceolate: spikes rather long. 
 
 Shoots nearly terete. P. Schumanni. 
 
 Shoots ancipital. 
 
 Cataphyls mostly 2 pairs. P. Purpusi. 
 
 Cataphyls 1 pair. 
 
 Spike-joints turbinately fruited. P. nervosum. 
 
 Spike- joints clavately fruited. P. Conzattii. 
 
62 THE GENUS PHOEADENDKON 
 
 PHORADENDRON PACHYARTHRON Eichler. 
 
 Phoradendron pachyarthron Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 
 
 2. p. 122. 1868. 
 
 Phoradendrum pachyarthron Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 33. 
 1897. 
 
 Scarcely forked, dull, the moderate branches with basal cataphyls 
 only, dioecious?. Internodes moderate (3-4x40-60 mm.), somewhat an- 
 cipitally compressed, becoming terete. Cataphyls a single pair about 5 
 mm. from the base or frequently 1 or 2 additional pairs at short intervals, 
 scarcely tubular. Leaves rather elliptical below becoming lanceolate 
 above, obtuse, 2-5.5x5-9 cm., cuneately subpetioled for 15-20 mm. Spikes 
 often clustered, rather short (20 mm.), with about 4 subglobose joints 
 some 6-flowered in 4+2 series when pistillate: peduncle 2 mm. long: 
 scales evanescently ciliolate. Fruit?. Plate 71. 
 
 Mexican tableland. The type from near Real del Monte. 
 Specimens examined: MEXICO. Banos (Ehrenberg, 1011, Dec. 1838, 
 the type). 
 
 Phoradendron Schumann! n. sp. 
 
 Scarcely forked, rather glossy, the moderate branches with basal cata- 
 phyls only, dioecious?. Internodes moderate (2-4x20-60 mm.), quickly 
 terete. Cataphyls a single pair 5 or mostly 10-15 mm. above the base, or 
 2 pairs 10-15 mm. apart, acutely spreading. Leaves oblong-elliptical to 
 elliptical lanceolate, very obtuse, 1.5-2.5x6-8 cm., cuneately subpetioled 
 for about 10 mm. Spikes often clustered, rather long (20 or 25 to 50 or 
 70 mm.), with some 4 to 6 joints 6- to 12- or 14-flowered in 4 or 4+2 ser- 
 ies: peduncle 2-4 mm. long: scales minutely ciliate. Fruit subglobose, 
 smooth, 5 mm. in diameter : sepals closely inflexed. Plates 71, 72. 
 
 Western Sierra Madre region ( f exclusively) on Quercus. The type 
 from Jaral. 
 
 Specimens examined: MEXICO. Mountains about Jaral (Walther 
 Schumann, 711, Dec. 25, 1885, the type, Nov. 20, 1886). Sierra Nana- 
 ruchic, Chihuahua (Endlich, 1219). Santiago Papasquiaro, Durango 
 (Palmer, 84). Without locality (Karwinski, 1844). Sierra Madre of 
 N. W. Mexico (Seemann, 2140). 
 
 Phoradendron Purpusi n. sp. 
 
 More or less pseudodichotomous, rather granular, the elongated 
 branches with basal cataphyls only, dioecious ?. Internodes rather short, 
 (3x30-50 mm.), somewhat compressed and dilated beneath the nodes be- 
 coming terete. Cataphyls mostly 2, sometimes 3 pairs, one basal or nearly 
 so and the others at intervals of 5-10 mm., scale-like. Leaves somewhat 
 falcately lanceolate, acute to very obtuse, 2 or 2.5-4x8-15 cm., cuneately 
 
AEQUATOEIALES NEEVOSAE (.3 
 
 petioled for 10-15 mm. Spikes mostly clustered, rather long (at length 
 40 or 50 mm.), with about half a dozen moderate joints some 16- to 24- 
 flowered in 4, 4+2 or 6 series : peduncle 2 mm. long : scales evanescently 
 somewhat ciliate. Fruit subglobose, smooth, 4 mm. in diameter: sepals 
 closely inflexed. Plate 73. 
 
 Eastern Sierra Madre region ( ? exclusively) on Quercus. The type 
 from eastern Mexico. 
 
 Specimens examined: MEXICO. Zacuapam, V. C. (Purpus, Feb. 
 1912, the type). Mirador (Liebmann, 4, 3097, 1842, P. Reichenbach- 
 ianum Oliver) . Without locality ( 1 Hdhn, 1865-6) . 
 
 PHORADENDRON NERVOSUM Oliver. 
 
 Phoradendron nervosum Oliver, Vidensk. Meddel. Naturhist. Foren. 
 Kjobenhavn. 1864. p. 175. 
 
 Scarcely forked, the rather long slender branches with basal cataphyls 
 only, dioecious. Internodes moderate (2-3x50-70 or even 150 mm.), an- 
 cipital becoming terete. Cataphyls a single pair, basal, scarcely tubular, 
 white-margined. Leaves obliquely lanceolate, attenuately rather obtuse, 
 1.5 or 2 to 4 or 5x9-12 or even 17 cm., varying into orbicular and 7x8 cm., 
 5- or 7-nerved and veiny, cuneately petioled for 10 mm. Spikes mostly 
 clustered, rather long (20-30 becoming 40-60 mm.), smooth, with mostly 
 4 or 6 joints turbinately 12- to 30-flowered in 4 or 4-(-2 series : peduncle 
 3-5 mm. long: scales and receptacular cups evanescently short-ciliate. 
 Fruit subglobose, reddish, 3 mm. in diameter, at length finely granular : 
 sepals inflexed. Plates 8, 74. 
 
 Eastern Sierra Madre region, on Anona, Liquidambar, Pyrus, Quer- 
 cus, etc. The type from eastern Mexico. 
 
 Specimens examined: MEXICO. VERA CRUZ. Papantla (Liebmann, 
 5, 3089). Colipa (Liebmann, 5, 3090, the type). Cordoba (Bourgeau, 
 1473, 1482, 1483; Kerber, 34). Orizaba (Botteri, 873; Mueller, 1219; 
 Bourgeau, 2546). Paso Macho (Wawra, 865). Fortin (Kerber, 351). 
 El Mirador (Endlich, 1138; Ross, 718). Sta. Ana (Bourgeau, 3034). 
 Zacuapam (Purpus, 2877, 1912). Jalapa (Pringle, 8191). Without lo- 
 cality (Herb. Grisebach.). "Mexico und Umgebung" (Wawra, 420). 
 
 Phoradendron Conzattii n. sp. 
 
 Not forked, the long stout branches with basal cataphyls only, dioe- 
 cious. Internodes moderate (3-6x25-60 mm.) rough-papillate, ancipital 
 and somewhat dilated becoming terete. Cataphyls a single pair, above 
 the base, acute, spreading. Leaves falcately lanceolate, submucronately 
 obtuse to very long-attenuate, 3-4x15-30 cm., 5- to 7-nerved and somewhat 
 
64 THE GENUS PHOBADENDKON 
 
 veiny, cuneately petioled for 20-30 mm. Spikes mostly clustered, stout, 
 long (30, becoming 55-60 mm. in fruit), smooth, with about 5 clavate 
 joints 8- to 12-flowered in 4+2 series when pistillate or with double this 
 number of flowers when staminate : peduncle scarcely 5 mm. long : scales 
 little ciliate. Fruit subglobose, smooth, deeply immersed in the recep- 
 tacular cups : sepals closely inflexed. Plate 75. 
 
 Cordilleran region of Mexico ( ? exclusively) on Quercus. The type 
 from Oaxaca. 
 
 Specimens examined: MEXICO. OAXACA. Coyula to Cuyamacalco, 
 Cuicatlan (Conzatti & Gomez, 2380, June 22, 1909, the type). Xaya- 
 catlan (Rusby, Mar. 1910). 
 
 A form with thicker less nerved leaves not attenuate at tip, and short 
 acutely compressed internodes, from Tecomatlan to Pueblo Vie jo, Oax. 
 (Conzatti, 1897), may be distinguished as var. tecomatlana (PI. 75). 
 With two pairs of cataphyls respectively some 10 and 60 mm. above the 
 base and leaves scarcely 12 cm. long, it is var. nocJiixtlanensis (Huauh- 
 chilla, Nochixtlan, Oaxaca, at 2500 m. (Conzatti & Gonzales, 1187, June 
 1901). Plate 76. 
 
 12. LANCEOLATAE. 
 
 Leaves moderately fleshy, narrowly lanceolate, rather obscurely basi- 
 nerved. Cataphyls a single pair, on the basal joint only. Flowers in 
 4-J-2 series. Fruit ovoid, smooth, with closed sepals. Mexico. 
 
 Shoots quickly terete : leaves heavy-nerved. P. lanceolatum. 
 
 Shoots ancipitally compressed : leaves fine-nerved. P. falcatum. 
 
 PHORADENDRON LANCEOLATUM Engelmann. 
 
 Phoradendron lanceolatum Engelmann, Mem. Amer. Acad. n. s. vol. 4. 
 p. 59. 1849. 
 
 Not forked, the moderate branches with basal cataphyls only, dioe- 
 cious. Internodes moderate (2-3x20-40 mm.), smooth, nearly terete. 
 Cataphyls a single pair, about 8 mm. above the base, acute, spreading. 
 Leaves short-lanceolate, obtuse, 1-1.5x6-8 cm., indistinctly nerved, cune- 
 ately subpetioled for about 5 mm. Spikes mostly solitary, moderate 
 (30-40 mm.), rather stout, smooth, with about 5 oblong joints 6- to 10- 
 flowered when pistillate and 15- to 20-flowered in 4+2 series when stam- 
 inate: peduncle 2-4 mm. long: scales ciliate. Fruit ovoid, 3x4 mm., 
 smooth : sepals closely inflexed. Plate 77. 
 
 Eastern Sierra Madre region ( ? exclusively) on Quercus. The type 
 from northern Mexico. 
 
 Specimens examined : MEXICO. Rinconada, between Monterrey and 
 Saltillo (Gregg, 255, the type; TJiurber, 865). 
 
AEQUATOBIALES ANGUSTIFOLIAE 65 
 
 Phoradendron falcatum n. comb. 
 
 Viscum falcatum Chamisso & Schlechtendal, Linnaea. vol. 5. p. 172. 1830. 
 V. Schiedeanum de Candolle, Prodomus. vol. 4. p. 671. 1830. 
 
 Not forked, the moderately long and stout branches with basal cata- 
 phyls only, dioecious?. Internodes rather short (2-4x20-50 mm.), smooth, 
 ancipitally flattened becoming terete. Cataphyls a single pair, nearly 
 basal, rather blunt and white margined. Leaves lanceolate, obtuse, at 
 length 1.5x8-15 cm., rather distinctly but finely nerved, cuneately atten- 
 uate for about 10 mm. Spikes mostly solitary, rather short (15-25 mm.), 
 slender, smooth, with about 4 joints some 6-flowered in 4+2 series when 
 pistillate: peduncle 1-3 mm. long, sometimes with more than one joint: 
 scales ciliolate. Fruit (immature) ovoid, 2x3 mm., smooth: sepals in- 
 flexed. Plate 78. 
 
 Eastern Sierra Madre region (? exclusively) on Quercus. The type 
 from Jalapa. 
 
 Specimens examined: MEXICO. Jalapa (Schiede, 403, the type of 
 V. falcatum). San Luis Potosi (Parry & Palmer, 799). 
 
 13. ANGUSTIFOLIAE. 
 
 Leaves narrow or short, rather thin, fine-nerved from the base. Shoots 
 nearly terete. Cataphyls a single pair, on the basal joint only. Flow- 
 ers in 4+2 series. Andes. 
 
 Leaves linear-lanceolate, long : sepals inflexed. P. angustifolium. 
 
 Leaves broadly lanceolate, short : sepals erect. P. parietarioides. 
 
 PHORADENDRON ANGUSTIFOLIUM Eichler. 
 
 Phoradendron angustifolium Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 
 
 2. p. 115. 1868. 
 Loranthus angustifolius Humboldt, Bonpland & Kunth, Nov. Gen. Sp. 
 
 vol. 3. p. 442. 1818. 
 
 Viscum angustifolium de Candolle, Prodromus. vol. 4. p. 281. 1830. 
 V. stenophyllum Sprengel, Systema. vol. 1. p. 487. 1825. 
 
 Not forked, the moderate rather slender branches with basal cataphyls 
 only, dioecious! Internodes rather short (2-3x25-50 mm.), smooth, 
 nearly terete or evanescently 2-edged. Cataphyls a single pair, 5-10 mm. 
 above the base, spreading. Leaves linear-lanceolate, obtuse, 1x12-13 cm., 
 finely nerved, cuneately petioled for about 10 mm. Spikes more or less 
 clustered, rather short (20 mm.), slender, smooth, with 3-6 oblong joints 
 some 14- to 30-flowered in 4+2 series when pistillate : peduncle 4-6 mm. 
 long : scales narrowly white margined. Fruit globose, 4 mm. in diameter, 
 smooth : sepals inflexed. Plate 79. 
 
66 THE GENUS PHORADENDRON 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Olleras to Mt. Aipate (Bonpland, 3508, 
 the type of L. angustifolius) . Without locality ( ? Pavon, with ciliate 
 scales and pistillate spikes 30 mm. long about 12-flowered at the ends of 
 the joints). BOLIVIA. Without locality (Cuming, 1 84). 
 
 Phoradendron parietarioides n. sp. 
 
 Not forked, the moderate slender branches with basal cataphyls only, 
 androgynous. Internodes short (2-3x20-30 mm.), smooth, slightly com- 
 pressed toward the nodes becoming terete. Cataphyls a single pair, above 
 the base, acute, spreading. Leaves lanceolate, acute, 1.5-2.5x6-8 cm., thin, 
 finely 5-nerved and veiny, cuneately subpetioled for about 5 mm. Spikes 
 clustered, short (15 mm.), slender, smooth, with some 3 filiform joints 
 scarcely 10-flowered in 4+2 series : peduncle 2-3 mm. long. Fruit ellip- 
 soidal, 3x4 mm., nearly smooth : sepals suberect, not meeting. Plate 80. 
 
 Andean region. The type from Ecuador. 
 
 Specimens examined: ECUADOR. Without locality (Sodiro, 148/20, 
 the type, 148/25; Jameson, in Herb. Hooker.). Cumbaya (Sodiro, c, 
 1871) . Quisaya (Sodiro, i, 1874) . 
 
 14. CORYNARTHRAE. 
 
 Leaves elongated or narrow, rather thin, fine-nerved from the base. 
 Shoots mostly 2-edged. Cataphyls 1 or less commonly 2 pairs, on the 
 basal joint only. Flowers in 4 or 4+2 series. Fruit roundish, smooth or 
 wrinkled. Central America. 
 Leaves narrow, not very sharply nerved. 
 
 Fruiting spike-joints clavate. P. corynarthron. 
 
 Fruiting spike-joints turbinate. P. Tonduzii. 
 
 Leaves relatively broad (2 cm.) sharply nerved. P. Cooperi. 
 
 PHORADENDRON CORYNARTHRON EicTiler. 
 
 Phoradendron corynarthron Eichler in v. Martius, Fl. Brasil. vol. 15. pt. 
 2. p. 115. 1868. 
 
 Scarcely forked, the moderately long rather slender branches with 
 basal cataphyls only, dioecious?. Internodes rather short (1-2x30-50 
 mm. ) , scarcely 2-edged. Cataphyls usually 2 pairs, one nearly basal and 
 the other some 15 mm. above it, scarcely tubular. Leaves narrowly lan- 
 ceolate, mucronately subacute, 1-1.5x4-6 cm., more or less evidently about 
 3-nerved, cuneately subpetioled for scarcely 10 mm. Spikes mostly sol- 
 itary, moderate (becoming 30-40 mm.), slender, smooth, with about 4 
 joints clavately some 6- to 12-flowered in 4 or 4+2 series : peduncle 5 mm. 
 
AEQUATORIALES ANDINAE 67 
 
 long: scales scarcely ciliate. Fruit (immature) globose, much wrinkled, 
 3 mm. in diameter: sepals closely inflexed. Plate 81. 
 
 Isthmian region. The type from Panama. 
 
 Specimens examined: PANAMA. Chiriqui (Wagner, Apr. 1858, 
 the type). 
 
 Phoradendron Tonduzii n. sp. 
 
 Not forked, the rather long and slender branches with basal cataphyls 
 only, dioecious. Internodes moderate (2-3x30-60 mm.), striate, 2-edged 
 becoming terete. Cataphyls a single pair, nearly basal. Leaves narrowly 
 lanceolate, obtuse, 1-1.5x15 cm., finely 3- or mostly 5-nerved, cuneately 
 long-attenuate at base. Spikes sometimes clustered, moderate (30-40 
 mm.), slender, smooth, with 3 or 4 joints turbinately some 20-flowered 
 in 4 series when pistillate and 30-flowered in 4+2 series when staminate : 
 peduncle scarcely 2 mm. long: scales and receptacular cups microscop- 
 ically and transiently ciliate. Fruit (immature) somewhat ovoid, 3 mm. 
 in diameter, smooth : sepals closely inflexed. Plate 82. 
 
 Isthmian region. The type from Costa Eica. 
 
 Specimens examined: COSTA RICA. Sta. Rosa du Copey (Tonduz, 
 12179, Apr. 1898, the type). San Ramon (Brenes, 14407). Without 
 locality (Friedrichsthal, 1841/xiv; Herb. Bentham.) . 
 
 Phoradendron Cooperi n. sp. 
 
 Not forked, the long rather stout branches with basal cataphyls only, 
 dioecious. Internodes elongated (4-5x60-80 mm.), ancipital becoming 
 terete. Cataphyls a single pair, basal, rather acute. Leaves falcately 
 lanceolate, obtuse, 1.5-2.5 or 3x15 cm., finely about 5-nerved, cuneately 
 subpetioled for 10 or 15 mm. Spikes often clustered, slender, moderate 
 or long (20-35 or even 65 mm.), smooth, with some 5 joints about 20-flow- 
 ered when pistillate and as much as 30-flowered in 4+2 series when stam- 
 inate: peduncle 1-2 mm. long: scales scarcely ciliate. Fruit (immature) 
 subglobose : sepals closely inflexed. Plate 83. 
 
 Isthmian region. The type from Costa Rica. 
 
 Specimens examined : COSTA RICA. Estrella, Cartago (J. J. Cooper, 
 5931, July 1887, the type). Monte Candelaria, San Jose, etc. (Oersted, 
 5, 3091, 3093, 1846-7) . San Jose (Hoffmann, 219, 1854) . 
 
 15. ANDINAE. 
 
 Leaves broad or large, rather thin, fine-nerved from the base. Shoots 
 mostly 2-edged. Cataphyls a single pair, on the basal joint only. Flow- 
 ers mostly in 4+2 series. Fruit round, smooth, with closed sepals. Andes, 
 including part of Venezuela. 
 
68 THE GENUS PHORADENDRON 
 
 Leaves elongated (10-15 cm.). 
 
 Relatively narrow (scarcely 2.5 cm.). 
 
 Narrowly lanceolate. Venezuela. P. tubulosum. 
 
 Broadly lanceolate. Colombia. P. Trianae. 
 
 Relatively broad (3-7 cm.). 
 
 Lanceolate. Bolivia. P. semiteres. 
 
 Ovate-lanceolate. Ecuador. P. Verleyseni. 
 
 Leaves rather short (6-7 cm.) and broad. Venezuela. P. granaticolum. 
 
 PHORADENDRON TUBULOSUM (Urban) . 
 
 Phoradendrum tubulosum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 5. 
 1897. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious?. Internodes moderate (2-3x25-60 mm.), 
 smooth, from ancipital becoming terete. Cataphyls basal, a single pair, 
 tubular, scarious-margined. Leaves falcately lanceolate, obtuse, 2-2.5x14 
 cm., finely about 7-nerved, cuneately subpetioled for some 10 mm. Spikes 
 more or less clustered, moderate (becoming 30-40 mm. in fruit), with 3 
 or 4 joints turbinately about 18-flowered in 4+2 series : peduncle about 
 3 mm. long: scales scarcely ciliate, rather acutely divergent. Fruit (im- 
 mature) subglobose, nearly smooth, 3 mm. in diameter : sepals closely in- 
 flexed. Plate 84. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined. VENEZUELA. Tovar (Fendler, 1106, the 
 type). Galipan (Kuntze, 1579). 
 
 PHORADENDRON TRIANAE Eichler. 
 
 Phoradendron Trianae Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. p. 
 117. 1868. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious?. Internodes moderate (3-4x50-70 mm.), 
 smooth, very acutely ancipital. Cataphyls a single pair, basal, deeply 
 parted, somewhat scarious-margined. Leaves subfalcately lanceolate, 
 obtuse, about 2.5x9 cm., somewhat indistinctly 5- to 7-nerved, cuneately 
 wing-petioled for 10-15 mm. Spikes more or less clustered, moderate (20, 
 lengthening to 30 mm.) , with about 3 rather fusiform joints some 36-flow- 
 ered in 4-J-2 series : peduncle 2 mm. long : scales somewhat scarious-mar- 
 gined, scarcely ciliate, subtruncate. Fruit red, globose, smooth, 3-4 mm. 
 in diameter : sepals rather closely inflexed. Plate 84. 
 
 Andean region. The type from Colombia. 
 
 Specimens examined: COLOMBIA. Andes de Herve, Antioquia, a 
 1800 m. (Triatia, 2778, the type number). "Colombia and Ecuador" 
 Lehmann, 6667) . 
 
AEQUATOR1ALES ANDINAE 69 
 
 Phoradendron semiteres n. sp. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious?. Internodes rather long (3-6x50-100 mm.), 
 smooth, ancipital or half-round becoming terete. Cataphyls a single pair, 
 tubular-bifid, scarious-margined. Leaves obliquely or subfalcately lance- 
 olate, obtuse, 1.5 or 2x8-9 or 3-4x12 cm., finely 5- to 7-nerved, cuneately 
 subpetioled for 10 or 15 mm. Spikes more or less clustered, moderate 
 (becoming 30 mm. in fruit), with about 3 ellipsoidal joints 10- to 24-flow- 
 ered in 4+2 series : peduncle 2 mm. long : scales scarious margined, not 
 ciliate. Fruit red, globose, nearly smooth, 3 mm. in diameter: sepals 
 rather closely inflexed. Plate 85. 
 
 Andean region. The type from Bolivia. 
 
 Specimens examined : BOLIVIA. Sirupaya, near Yanacachi, S. Yun- 
 gas (Buchtien, 1411, Dec. 17, 1906, the type). Cotana, at 2450 m. 
 (Bucliticn, 163}. PERU. Without locality (Pavon ). 
 
 Phoradendron Verleyseni n. sp. 
 
 Scarcely forked, the long branches with basal cataphyls only, dioe- 
 cious?. Internodes elongated (3-6x100 mm. or more), smooth, for a time 
 somewhat compressed but soon terete. Cataphyls a single pair, basal, 
 tubular-bifid, white-margined. Leaves (on the same plant) from more 
 or less falcately lanceolate, 2x7 cm., passing into almost truiicately ovate, 
 7x12 cm., obtuse or bluntly acuminate, about 7-nerved, sometimes rather 
 abruptly or subcordately contracted to the cuneately winged 10 mm. 
 petiole. Spikes often clustered, moderate (20 lengthening to 50 mm. in 
 fruit), with about 4 oblong joints some 20-flowered in 4+2 series: pedun- 
 cle scarcely 5 mm. long: scales scarcely ciliate, subtruncate or notched. 
 Fruit red, globose, smooth, 4 mm. in diameter : sepals closely inflexed. 
 Plate 86. 
 
 Andean region. The type from Ecuador. 
 
 Specimens examined : ECUADOR. Without locality (Verleysen, 148*, 
 the type, 148**, 1896; Sodiro, 19c, 28, 29, 30, 32, 148/29, 148/29b). 
 Aguirre (Sodiro, Dec. 1870). Quito (Jameson, 608, 1848). Perucho 
 (Sodiro, x, 1871) . Niebly (Sodiro, x, 1873) . 
 
 With thicker more persistently compressed internodes, rather thicker 
 leaves, and more numerous flowers than in the type, it occurs from 
 Puente de Chimbo (Sodiro, 148/19) in a form which may be called var. 
 chimboensis. Plate 87. With spikes as in the last, but less compressed 
 internodes and small leaves some .5x5-6 cm., it becomes var. Fraseri, 
 without locality (Fraser, 1860). 
 
70 THE GENUS PHOEADENDBON 
 
 Phoradendron granaticolum n. sp. 
 
 Not forked, the rather long branches with basal cataphyls only, dioe- 
 cious?. Internodes rather long (2-6x25-100 mm.), smooth, elliptically 
 ancipital. Cataphyls a single pair, basal, tubular, scarious-margined. 
 Leaves elliptical-lanceolate to somewhat rhombically ovate, very obtuse, 
 2.5-4.5x6-8 cm., finely 5- to 7-nerved, cuneately petioled for about 10 mm. 
 Spikes (very young) short (15 mm.), with about 4 oblong joints some 
 20-flowered in about 6 series : peduncle 2 mm. long : scales scarcely ciliate, 
 somewhat brown-margined. Fruit?. Plate 87. 
 
 Venezuelan region (? exclusively on Punica). The type from Ven- 
 ezuela. 
 
 Specimens examined: VENEZUELA. Caracas (Gollmer, Apr. 28, 1854, 
 the type). 
 
 16. AMPLECTENTES. 
 
 Leaves mostly of medium size, drying rather thin and distinctly fine- 
 nerved from the base, usually clasping with recurved but quickly up- 
 curving bases. Shoots 2- or 4-winged. Cataphyls 1 or rarely 2 pairs, on 
 the basal joint only. Flowers mostly in 6 series. Fruit round, nearly 
 smooth, usually with closed sepals. South America; one species in the 
 West Indies. 
 
 Upper internodes ancipital or 2-winged. 
 
 Leaves not clasping, relatively large (7-10 cm.). P. Casimiranum. 
 Leaves clasping, usually under 7 cm. long. 
 
 Internodes winged. P. dipterum. 
 
 Internodes merely 2-edged. 
 
 Leaves narrow (1-1.5 cm.), rather long. 
 
 P. multifoveolatum. 
 Leaves broader (1.5 cm.), rather short. 
 
 P. hypericifolium. 
 Upper internodes acutely 4-angled or 4-winged. 
 
 Leaves elliptical-lanceolate. P. tetrapterum. 
 
 Leaves lanceolate, rather long. 
 Petiolately contracted. 
 
 Relatively broad (1 :4) . 
 
 Fertile joints turbinate. P. demerarae. 
 
 Fertile joints clavate. P. tovarense. 
 
 Relatively elongated (1 :5). P. Crulsii. 
 
 Sessile and broadly clasping. P. amplexicaule. 
 
 Leaves obovate-oblanceolate. P. Glaziovii. 
 
 Leaves ovate-lanceolate, large. P. amplectens. 
 
 Leaves ovate, sessile. P, turbinispicum. 
 
AEQUATORIALES AMPLECTENTES 71 
 
 Phoradendron Casimiranum n. sp. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious?. Internodes moderate (3-4x50-70 mm.), the 
 upper flattened and somewhat wing-margined. Cataphyls a single basal 
 pair or 2 approximated pairs, somewhat tubular. Leaves subspatulately 
 oblanceolate, very obtuse or somewhat emarginate, 2x8 cm., exceptionally 
 obovate and as much as 5 cm. wide, finely 5- or 7-nerved, revolutely at- 
 tenuate for nearly 10 mm., scarcely clasping. Spikes solitary, long (at 
 length 80 or 90 mm.), with 6-8 rather slender joints turbinately about 40- 
 flowered in 6 series: peduncle scarcely 2 mm. long, sometimes with a 
 second pair of scales: scales acutely spreading, scarcely ciliate. Fruit 
 (immature) globose, smooth, 3 mm. in diameter: sepals closely inflexed. 
 Plate 88. 
 
 Brazilian region ( ? exclusively) on other mistletoes. The type from 
 Paraguay. 
 
 Specimens examined: PARAGUAY. Peribebui (Balansa, 3220, the 
 type in the herbarium of M. Casimir de Candolle) . Paraguari ( ? Bal- 
 ansa, 4721, younger and with smaller leaves). 
 
 PHORADENDRON DIPTERUM Eichler. 
 
 Phoradendron dipterum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 109. 1868. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous?. Internodes moderate (2-6x30-75 mm.), 
 the upper broadly 2-winged. Cataphyls a single nearly basal pair or a 
 second pair 5-10 mm. higher. Leaves elliptical to oblanceolate-oblong, 
 submucronately very obtuse, 1-2.5x3-10 cm., rather distinctly 3- to 5- 
 nerved, gradually revolutely narrowed to the somewhat clasping base 
 rather than petioled. Spikes often clustered, long (40, -lengthening to 80 
 mm. or more in fruit) , with half a dozen rather slender oblong joints as 
 much as 30-flowered in 6 series : peduncle 5 mm. long : scales evanescently 
 ciliolate. Fruit (immature) brownish, globose, 3 mm. in diameter, very 
 slightly granular : sepals inflexed. Plate 89. 
 
 Brazilian region. The type from Ceara. 
 
 Specimens examined: BRAZIL. Ceara (Gardner, 1672, the type). 
 Monte Cruzeiro, Bahia (Rose & Russell, 20027}. 
 
 PHORADENDRON MULTIFOVEOLATUM Eichler. 
 
 Phoradendron multifoveolatum Eichler in v. Martius, Fl. Brasil. vol. 5. 
 pt. 2. p. 110. pi. 34. 1868. 
 
 More or less pseudodichotomous, the long branches with basal cata- 
 phyls only, dioecious. Internodes rather short (2x30-60 mm.), the upper 
 
72 THE GENUS PHORADENDKON 
 
 ancipitally flattened. Cataphyls a single pair, basal. Leaves oblance- 
 olate-oblong, mucronately subacute, .5-1 or 1.5x5-6 or rarely 10 cm., some- 
 what 3-, 5- or 7-nerved, gradually revolutely narrowed to the somewhat 
 clasping base. Spikes solitary, long (40-80 mm.), with half a dozen slen- 
 der oblong or somewhat fusiform joints 30- to 60-flowered when pistillate 
 and 60- or 80-nowered in 6 series when staminate : peduncle 5 mm. long, 
 sometimes with a very short basal joint: scales deeply parted, scarcely 
 ciliate. Fruit reddish white, globose, smooth, about 3 mm. in diameter : 
 sepals somewhat parted. Plate 90. 
 
 Brazilian region. The type from Bahia. 
 
 Specimens examined: BRAZIL. Desert regions of Bahia (v. Mar- 
 tins, the type). 
 
 Phoradendron hypericifolium n. sp. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 dioecious! Internodes moderate (2x40-60 mm.), the upper rhombically 
 ancipital. Cataphyls a single pair, basal, tubular-bifid. Leaves ellip- 
 tieal-obovate, obtuse, 1.5x4 cm., rather evidently 5-nerved, somewhat 
 revolutely narrowed to the sessile clasping base. Spikes solitary, long 
 (50-60 mm. in fruit), with about 4 fusiform or turbinate joints some 40- 
 flowered in 6 series when pistillate: peduncle 4 mm. long: scales some- 
 what notched, scarious-margined, scarcely ciliate. Fruit (immature) 
 red, globose, cellular-papillate, about 3 mm. in diameter: sepals closely 
 inflexed. Plate 91. 
 
 Brazilian region. The type from Paraguay. 
 
 Specimens examined. PARAGUAY. Southern Paraguay (Kuntze, 9, 
 Sept. 1892, the type). 
 
 PHORADENDRON TETRAPTERUM (Krug & Urban). 
 
 Phoradendrum tetrapterum Krug & Urban, Bot. Jahrb. vol. 24. p. 35. 
 1897. 
 
 More or less pseudodichotomous, the rather long and spreading 
 branches with basal cataphyls only, androgynous. Internodes rather 
 short (2-4x30-60 mm.), the upper acutely and rather undulately 4- 
 winged. Cataphyls a single pair, nearly basal, somewhat tubular or an- 
 nular-bifid. Leaves more or less falcately elliptical-oblanceolate or ob- 
 ovate, rather obtuse, 1.5-3.5x6-10 cm., rather evidently about 5-nerved, 
 cuneatcly narrowed for 5-10 mm. rather than petioled. Spikes mostly 
 clustered, long (40-90 mm.), with about 5 joints turbinately some 18- to 
 26-flowered in 4+2 series: peduncle 2 mm. long: scales rather acutely 
 spreading, scarcely ciliate. Fruit white, subellipsoid, cellular-papillate, 
 2x3 mm. : sepals not meeting. Plate 92. 
 
 Antillean and Caribbean regions ( ? exclusively) on other mistletoes. 
 The type from Jamaica. 
 
AEQUATORIALES AMPLECTENTES 73 
 
 Specimens examined: ANTILLES. JAMAICA (Harris, 6393, taken 
 as the type, 6545, 6576, 6926: Britton, 813). PUERTO Rico (Bertero, 
 from Sprengel in the Presl herbarium; Kuntze, 426; Sintenis, 5409, 
 6758; Britton, Stevens & Hess, 2564; Stevens, 4818, 4819, 4828, 4887, 
 5210, 5211). CARIBBEES. MARTINIQUE (Iscrt, 1787). 
 
 Phorandendron demerarae n. sp. 
 
 More or less pseudodiehotomous, the rather long and spreading 
 branches with basal cataphyls only, androgynous. Internodes moderate 
 (2-5x30-60 mm.), the upper either ancipitally flattened or 4-winged. 
 Cataphyls a single pair, nearly basal or 10-15 mm. above the base, some- 
 what tubular. Leaves more or less rhomboidally lanceolate, very obtuse, 
 2-3x5-7 cm., finely about 5-nerved, somewhat revolutely tapered for about 
 10 mm. rather than petioled, slightly clasping. Spikes more or less clus- 
 tered, long (40-90 mm.), with about 5 somewhat fusiform or turbinate 
 slender joints about 26-flowered in 4 series: peduncle 2 mm. long: scales 
 acutely ascending, scarcely ciliatc. Fruit white, subglobose, smooth, 3 
 mm. in diameter : sepals not meeting. Plate 91. 
 
 Cayenne region ( ? exclusively) on other mistletoes. The type from 
 British Guiana. 
 
 Specimens examined: DEMERARA (Jenman, 2546, Nov. 1886, the 
 type : noted by its collector as the most beautiful of the Guiana mistle- 
 toes). 
 
 PHORADENDRON TOVARENSE (Urban). 
 Plioradendrum tovarense Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 8. 1897. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous. Internodes moderate (3-4x40-80 mm.), ancipital, the up- 
 per acutely quadrangular or 4-winged. Cataphyls a single pair, nearly 
 basal. Leaves somewhat falcately lanceolate, very obtuse, 2-3x8-10 cm., 
 finely about 7-nerved, gradually narrowed for 15 or 20 mm. to the some- 
 what clasping base. Spikes mostly clustered, long (50-80, becoming 120 
 mm.), with half a dozen joints clavately some 30- to 50-flowered about 
 the middle in 6 or even 8 or 10 series: peduncle 2 or 3 to 7 mm. long: 
 scales subtruncately spreading, scarcely ciliate. Fruit globose, smooth, 
 3-4 mm. in diameter : sepals nearly meeting. Plate 93. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1761, the 
 type, 1110, 1111). 
 
74 THE GENUS PHOEADENDBON 
 
 PHORADENDRON CRULSII (Urban). 
 Phoradendrum Crulsii Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 11. 1897. 
 
 Mot forked, the long branches with basal eataphyls only, dioecious?. 
 Internodes rather short (3-5x50-60 mm.), the upper acutely and undu- 
 lately 4-winged. Cataphyls?. Leaves somewhat falcately lanceolate, very 
 obtuse, 2.5-3x8-12 cm., more or less evidently 5- or 7-nerved, cuneately 
 subses^ile and clasping. Spikes often clustered, rather long (30, becom- 
 ing; 50-70 mm. in fruit), with half a dozen rather slender joints turbi- 
 nately about 30-flowered in 6 series : peduncle 3 mm. long : scales ciliate. 
 Fruit (immature) red, subglobose, cellular-papillate, 3 mm. in diameter: 
 sepals closely inflexed. Plate 94. 
 
 Brazilian region. The type from Goyaz. 
 
 Specimens examined: BRAZIL. Goyaz (Glaziou, 22021), July 22, 
 1895, the type). 
 
 PHORADENDRON AMPLEXICAULE Eichler. 
 
 Phoradendron amplexicaule Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 110. 1868. 
 
 Scarcely forked, the rather long branches with basal eataphyls only, 
 androgynous?. Internodes rather short (3-4x40-50 mm.), the upper 
 acutely and undulately 4-winged. Cataphyls?. Leaves shortly lance- 
 olate, very obtuse, 1-2x8 cm., somewhat evidently 5- or 7-nerved, broadly 
 sessile and clasping. Spikes mostly clustered, moderate (20-30 mm.), 
 with 2 or 3 joints clavately about 18-flowered in 6 series : peduncle 3 mm. 
 long: scales and receptacular cups somewhat ciliate. Fruit (immature) 
 globose, smooth, 3 mm. in diameter : sepals closely inflexed. Plate 94. 
 
 Brazilian region. The type from Brazil. 
 
 Specimens examined: BRAZIL. Without locality (Weddell, 1858, 
 the type collection, in the Candollean herbarium). 
 
 PHORADENDRON GLAZIOVII (Urban). 
 Phoradendrum Glaziovii Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 12. 1897. 
 
 Not forking, the rather long somewhat cellular-papillate branches 
 with basal eataphyls only, androgynous. Internodes at length long ( 1 or 
 2-4x40-100 mm. or more), the upper acutely 2- or mostly 4-angled or 
 winged. Cataphyls a single basal pair, or a second pair about 5 mm. 
 above the base, somewhat acutely spreading: an occasional pair of fer- 
 tile scales 2-4 mm. long preceding the foliage. Leaves obovate-oblance- 
 olate or subspatulate, sometimes mucronate, very obtuse or emarginato. 
 2-4x5-9 cm., somewhat revolutely attenuate for 10 or 15 mm. rather than 
 
AEQUATORIALES AMPLECTENTES 75 
 
 petiolcd, somewhat clasping, finely about 5-nerved. Spikes mostly clus- 
 tered, long (40, becoming 75 mm.), with half a dozen rather slender ob- 
 long joints some 20- to 40-flowered in 6 series: peduncle 2 mm. long: 
 scales rather truncate, evanescently ciliolate. Fruit?. Plate 96. 
 
 Brazilian region. The type from Rio de Janeiro. 
 
 Specimens examined : BRAZIL. Rio de Janeiro ( Glaziou, 4004, the 
 type). 
 
 Phorandendron amplectens n. sp. 
 
 More or less pseudodichotomous, the long branches with basal cata- 
 phyls only, dioecious?. Internodes long (4-7x60-75 mm. or more, the 
 upper acutely and often undulately 4-winged. Cataphyls a single pair, 
 basal, tubular. Leaves more or less falcately broadly lanceolate or ob- 
 lanceolate, very obtuse, 2.5-5x7-10 or 15 cm., somewhat evidently 5- or 
 7-nervod, cuneately contracted for 15 or 20 mm. into a subpetiolar base 
 4-5 mm. wide, which is abruptly dilated and clasping. Spikes mostly 
 clustered, rather long (30, lengthening to 50 mm.), with about 5 rather 
 slender joints turbinately 30- to 50-flowered in 6 series : peduncle 3 mm. 
 long: scales subtruncate, scarcely ciliate. Fruit (immature) subglobose, 
 smooth, 3 mm. in diameter : sepals closely inflexed. Plate 95. 
 
 Andean region ( ? exclusively) on other mistletoes. The type from 
 Ecuador. 
 
 Specimens examined: ECUADOR. Without locality (Sodiro, 148/21, 
 1882, the type). Quisaya (Sodiro, 1874). 
 
 Phoradendron turbinispicum n. sp. 
 
 Scarcely forked, the elongated branches with basal cataphyls only, 
 dioecious?. Internodes rather long (3-5x30-100 mm.), rather transiently 
 4-angled. Cataphyls mostly a nearly basal pair and a second some 20 
 mm. higher, tubular, white-margined. Leaves ovate-lanceolate, obtusely 
 somewhat acuminate, 2.5-4x7-10 cm., scarcely nerved, cuneately sessile. 
 Spikes solitary, long?, with evidently several rather stout joints turbi- 
 nately some 40- to 60-flowered in 4-f 2 series : peduncle about 5 mm. long : 
 scales scarcely ciliate. Fruit (immature) subglobose: sepals inflexed. 
 Plate 96. 
 
 Andean region. The type from Colombia. 
 
 Specimens examined : COLOMBIA, Quindiu, Mariquita ( Triana, 2777, 
 1851-7, the type). 
 
 17. BREVIFOLJAE. 
 
 Leaves small, thick, dull, scarcely veined, basinerved. Shoots, if at 
 first somewhat compressed, quickly terete. Cataphyls a single nearly 
 
76 THE GENUS PHORADENDRON 
 
 basal pair, on the basal joint only. Flowers in 4 or 4+2 series. South- 
 ern Mexico and Central America. 
 
 Leaves very small (3x10 mm.). P. brevifolium. 
 Leaves moderate (fully 10x30 mm.). 
 Cataphyls basal. 
 
 Leaves rather small (20x40 mm.). P. Rondeletiae. 
 
 Leaves rather large (30x50 mm.) . P. vulcanicum. 
 
 Cataphyls above the base : leaves crisped. P. crispum. 
 
 PHORADENDRON BREVIFOLIUM Oliver. 
 
 Phoradendron brevifolium Oliver, Vidensk. Meddel. Naturhist. Foren. 
 Kjbbenhavn. 1864. p. 176. 
 
 Somewhat pseudodichotomous, at first varnished, the rather long 
 branches with basal cataphyls only, dioecious?. Intemodes rather long 
 (2-3x50-70 mm.) , transiently somewhat squarish. Cataphyls a single pair, 
 about 5 mm. above the base, tubular-bifid, somewhat scarious-margined.. 
 Leaves narrowly elliptical or oblong, very obtuse, small (.3x1-1.2 cm.), 
 sessile. Spikes often clustered, rather long (becoming 40 or 50 mm. in 
 fruit), with about 4 moderate joints clavately 8- to 18-flowered about the 
 middle in 4+2 series : peduncle scarcely 3 mm. long : scales evanescently 
 searious-fimbriate. Fruit (immature) rather oblong, smooth, scarcely 3 
 mm. long: sepals closely inflexd. Plate 97. 
 
 Cordilleran region of Mexico. The type from Tehuacan. 
 
 Specimens examined: MEXICO. Tehuacan, Puebla (Liebmann, 16, 
 3084, 1841, the type ; Rose, Painter & Rose, 9965} . Teotitlan, Oax. (Con- 
 zatti,2124). 
 
 Phoradendron Rondeletiae n. sp. 
 
 Somewhat pseudodichotomous, the rather short branches with basal 
 cataphyls only, androgynous?. Internodes short (2-4x10-30 mm.), 
 smooth, for a time rather ancipitally flattened, somewhat dilated below 
 the nodes. Cataphyls a single pair, less than 5 mm. above the base, an- 
 nular. Leaves elliptical-obovate, 1-2x3-4 cm., cuneately petioled for about 
 5 mm. Spikes solitary, short (10-15 mm.), with 2 or 3 short joints some 
 4- to 10-fLowered in 4 or 4+2 series : peduncle nearly suppressed. Fruit 
 globose, smooth, 4 mm. in diameter: sepals erect, spreading. Plate 98. 
 
 Guatemalan region ( ? exclusively) on Rondeletia. The type from 
 Coban. 
 
 Specimens examined: GUATEMALA. Coban, Alta Verapaz (v. Tuerck- 
 heim, ii, 2045, Dec. 1907, the type). Samac (v. Tuercklieim, 435). 
 
A KQUATORIALES EOBUSTI8SIM A K 77 
 
 Phoradendroiv vulcanicum n. sp. 
 
 Somewhat pseudodichotomous, the moderate branches with basal cata- 
 phyls only, androgynous?. Internodes moderate, (2-5x40-70 mm.), 
 smooth, somewhat compressed and dilated below the nodes but not angu- 
 lar. Cataphyls a single nearly basal pair, acute. Leaves broadly ellip- 
 tical to ovate or obovate, very obtuse, 2.5-3x4-6.5 cm., rather abruptly 
 petioled for about 5 mm. Spikes mostly clustered, short (10 mm.), with 
 2 or 3 short joints some 10-flowered in 4-(-2 series: peduncle nearly sup- 
 pressed. Fruit?. Plate 99. 
 
 Guatemalan region ( ? exclusively) on Leguminosae. The type from 
 Acatenango. 
 
 Specimens examined: GUATEMALA. Volcan Acatenango, Sacatepe- 
 quez (Kellerman, 4829, Feb. 20, 1905, the type). Volean Fuego, Saca- 
 tepequez (Kellerman, 4551} . 
 
 Phoradendron crispum n. sp. 
 
 More or less verticillate, the moderate branches with basal cataphyls 
 only, androgynous?. Internodes rather short (2-3x40 mm.), smooth, es- 
 sentially terete. Cataphyls a single pair, 10-20 mm. above the base, short 
 and spreading. Leaves round-obovate, much crisped in drying, very ob- 
 tuse, 1.5-2.5x3-5 cm., rather abruptly petioled for about 5 mm. Spikes 
 mostly solitary, short (15 mm.), with 2 or 3 short rather slender joints 
 some 16- to 20-flowered in 4+2 series: peduncle 2 mm. long. Fruit?. 
 Plate 99. 
 
 Isthmian region ( ? exclusively) on Myrtaceae. The type from Costa 
 Rica. 
 
 Specimens examined: COSTA RICA. Locality? (Pittier, 14117, Dec. 
 31, 1900, the type). Volcan de Poas (Pittier, 816). 
 
 18. ROBUSTISSIMAE. 
 
 Leaves rather large and broad, thick, dull and obscurely basinerved. 
 Shoots 2-edged or terete. Cataphyls usually a single pair, on the basal 
 joint only. Flowers in 4, 4+2 or 6 series. Fruit nearly round, smooth, 
 with closed sepals. Mountain regions of Mexico and Central America. 
 
 Internodes for a time strongly 2-edged : leaves ovate- 
 lanceolate. P- Reichenbachianum. 
 Internodes not 2-edged. 
 
 Leaves elliptical. P- robustissimum. 
 
 Leaves lanceolate. P- falcifoUum. 
 
78 THE GENUS PHOKADENDRON 
 
 PHORADENDRON REICHENBACHIANUM Oliver. 
 
 Phoradendron Reichenbachianum Oliver, Vidensk. Meddel. Naturhist. 
 
 Foren. Kjobenhavn. 1864. p. 175. 
 Viscum Reichenbachianum Seemann, Bot. Herald, p. 296. pi. 62. 1852-7. 
 
 Scarcely forked, the long stout branches with basal cataphyls only, 
 dioecious. Internodes moderately long (5-10x50-100 mm.), from sharply 
 ancipital becoming terete. Cataphyls a single pair, 5 mm. above the 
 base, not tubular. Leaves ovate-lanceolate or elliptical-lanceolate, ob- 
 tuse, 3-4x8-10 cm., thick and dull, rather abruptly petioled for 10-15 mm. 
 Spikes mostly clustered, rafcher long (30-50 mm.), smooth, stout, with 
 about 6 globose joints some 8- to 10-flowered when pistillate and 12- to 
 30-flowered in 4+2 series when staminate : peduncle 3-5 mm. long : scales 
 little or transiently ciliate. Fruit (immature) subglobose, nearly smooth, 
 3 mm. in diameter: sepals closely inflexed. Plate 100. 
 
 Western Sierra Madre and Cordilleran regions of Mexico ( ? exclu- 
 sively) on Quercus. The type from western Mexico. 
 
 Specimens examined: MEXICO. Sierra Madre, N. W. Mexico (See- 
 mann, 2141, the type of V. ReichenbacManum). Jalisco (Diguet, 108). 
 Tlalpuxahua, near Toluca (Diguet). Jordana, near Toluca (Gregg, 722, 
 1849). Without locality (Graham, 233). 
 
 PHORADENDRON ROBUSTISSIMUM Eichler. 
 
 Phoradendron robustissimum Bichler in v. Martius, Fl. Brasil. vol. 5. 
 pt. 2. p. 122. 1868. 
 
 Somewhat pseudodichotomous, microscopically cellular-papillate 
 throughout, the rather long branches with basal cataphyls only, dioe- 
 cious?. Internodes moderate (2-5x50-70 mm.), transiently somewhat 
 rhombically compressed becoming terete. Cataphyls a single pair, nearly 
 basal, scarcely tubular. Leaves elliptical or subovate, obtuse or retuse, 
 2.5-3.5x4.5-6.5 or even 5x8 cm., abruptly cunate-petioled for 5 mm. Spikes 
 mostly clustered, rather long (30-50 mm.), with about 5 moderate joints 
 some 16-flowered in 4 series when pistillate: peduncle 3-5 mm. long: 
 scales scarcely ciliate. Fruit (immature) elongated, smooth, 3x5 mm. : 
 sepals closely inflexed. Plate 101. 
 
 Isthmian region. The type from Costa Rica. 
 
 Specimens examined: COSTA RICA. Ojos de Agua (Hoffmann, 360, 
 Dee. 1856, the type). Nicoya (Tonduz, 13705). 
 
 Phoradendron robustissimum simulans n. var. 
 
 Leaves elongated-elliptical, 3-5x8-12 cm., obtuse, with a heavy apical 
 mucro, rather gradually cuneate at base. Staminate spikes with the 
 
AEQUATORIALES^-CORIACEAE 79 
 
 joints 30- to 50-flowered in 44-2 series. Approaching the next species. 
 Plate 102. 
 
 Guatemalan and Isthmian regions. The type from San Salvador. 
 
 Specimens examined: GUATEMALA. Masagua, Escuintla (Smith, 
 2097}. Dept. Guatemala (Kellerman, 5100). Fiscal (Deam, 6099). 
 Without locality (Friedrichsfkal, 1841). EL SALVADOR. San Salvador 
 (Itenson, 284, 1908, the type). NICARAGUA. Without locality (Roth- 
 schuli, 464). Matagalpa (Preuss, 1372). COSTA RICA. El Rodeo (Pit- 
 tier, 1637) . 
 
 Phoradendron falcifolium n. sp. 
 
 Scarcely forked, microscopically cellular-papillate, the rather long 
 branches with basal cataphyls only, dioecious?. Internodes moderate 
 (3-4x50-70 mm.), transiently somewhat compressed and dilated below the 
 nodes becoming terete. Cataphyls a single pair, nearly basal, scarcely 
 tubular. Leaves broadly lanceolate, falcate, obtuse, 2.5-4x10-14 cm., cu- 
 neately subpetioled for 15-25 mm. Spikes clustered, moderate (30 mm.), 
 with about 6 moderate subglobose joints 20- to 30-flowered in 6 series: 
 peduncle scarcely 20 mm. long: scales transiently and minutely eiliate. 
 Fruit?. Plate 100. 
 
 Guatemalan region. The type from Baja Vera Paz. 
 
 Specimens examined: GUATEMALA. Sta. Rosa, Baja Vera Paz (v. 
 Tuerckheim, ii, 2168, Mar. 1908, the type). 
 
 19. COBIACEAE. 
 
 Leaves rather small, dull, obscurely basinerved. Shoots 2-edged or 
 terete. Cataphyls 1-3 or 4 pairs, on the basal joint only. Flowers in 
 4, 4+2, or 6 series. Fruit round or ellipsoid, smooth, with variously in- 
 flexed or parted sepals. South America. 
 
 Stems not very nodose. 
 Leaves smooth. 
 
 Lanceolate. P. congestum. 
 
 Oblanceolate-obovate. P. caripense. 
 
 Lance-elliptical or ovate. P. Herbert-Smithii. 
 
 Narrowly oblong. P. exiguum. 
 
 Leaves drying rough-granular. 
 Internodes quickly terete. 
 
 Leaves linear. P. stenophyllum. 
 
 Leaves rather lanceolate. P. coriaceum. 
 
 Internodes 2-edged. P. ulophyllum. 
 
 Stems much swollen at the nodes : leaves linear- 
 
 oblanceolate. P. habrostacJiyum. 
 
80 THE GENUS PHORADENDRON 
 
 Phoradendron congestum n. nom. 
 
 Plioradendron rubrum var. longifolia Eichler in v. Martins, Fl. Brasil. 
 vol. 5. pt. 2. p. 121. 1868. 
 
 Not forked, the moderate rather slender branches with basal cataphyls 
 only, dioecious?. Internodes rather short (2x25-40 mm.), smooth, rhom- 
 bically compressed and rather persistently 2-edged. Cataphyls a single 
 pair, nearly basal, scarcely tubular. Leaves falcately lanceolate, very 
 obtuse, ]. 5-2x7-10 cm., rather evidently about 5-nerved, cuneately sub- 
 petioled for about 5 mm. Spikes mostly clustered, typically short (10-15, 
 but becoming 30 or 40 mm. in some cases), with about 3 slender joints 
 8- to 30-flowered in 4 series : peduncle 5 mm. long : scales nearly truncate, 
 little ciliate. Fruit subglobose, scarcely 3 mm. in diameter, smooth : sepals 
 inflexed but scarcely meeting. Plates 103, 104. 
 
 Brazilian region. The type from Goyaz. 
 
 Specimens examined : BRAZIL. Goyaz (Gardner, 3764, 1837-1841, 
 the type of P. rubrum longifolium. A specimen of the same collection in 
 the Berlin herbarium bears, evidently by error, the number 3765). 
 
 PHORADENDRON CARIPENSE Eichler. 
 
 Phoradendron caripense Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 111. 1868. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, dioecious?. Internodes moderate (2-3x40-50 mm.), 
 smooth, for a time 2-edged. Cataphyls 1 or rarely 2 pairs, toward the 
 base, scarcely tubular or scarious. Leaves obliquely oblanceolate, very 
 obtuse, 2x3.5-6 cm., cuneately subpetioled for about 5 mm. Spikes little 
 clustered, short (scarcely 20 mm.), with about 3 slender joints about 30- 
 flowered in 6 series: peduncle short: scales scarcely scarious or ciliate. 
 Fruit?. Plate 104. 
 
 Brazilian region. The type from Para. 
 
 Specimens examined: BRAZIL. Caripi, near Para (Spruce, 140, Aug. 
 ] 849, the type). 
 
 Phoradendron Herbert-Smith!! n. sp. 
 
 Pseudodichotomous or verticillate, the long branches with basal cata- 
 phyls only, androgynous?. Internodes moderate (2-3x40-70 mm.), 
 smooth, somewhat compressed but soon terete. Cataphyls 1 or rarely 2 
 nearly basal pairs, bluntly spreading, white-margined. Leaves elliptical- 
 lanceolate, very obtuse to subemarginate, 2-2.5x3-6 or even 4x9 cm., cu- 
 neately narrowed for about 5 mm. rather than petioled. Spikes almost 
 solitary, rather long (20, becoming 40-60 mm.), with half a dozen rather 
 
AEQUATORIALES^CORIACEAE 81 
 
 elongated slender joints some 10-flowered when pistillate or with thrico 
 this number of flowers in 4-(-2 series when staminate : peduncle scarcely 
 2 mm. long: scales and receptacular cups somewhat ciliate. Fruit ovoid, 
 nearly smooth, 3x4 mm. : sepals ascending, slightly parted. Plate 105. 
 
 Venezuelan-Isthmian region. The type from Colombia. 
 
 Specimens examined : COLOMBIA. Sta. Marta, near Bonda, almost at 
 sea-level (Herbert H. Smith, 1283, the type). 
 
 Phoradendron exiguum n. sp. 
 
 More or less pseudodichotomous or verticillate, the rather long 
 branches with basal cataphyls only, androgynous?. Internodes moderate 
 (2-3x20-40 mm.), smooth, soon terete. Cataphyls a single nearly basal 
 pair, tubular-bifid, somewhat white-margined. Leaves oblong or oblong- 
 lanceolate, very obtuse, .5-1x4-6 cm., cuneately subpctioled for scarcely 3 
 mm. Spikes mostly solitary, rather long (20-40 mm.), with 3 or 4 very 
 slender joints scarcely 14-flowered in 4-J-2 series: peduncle 2-3 mm. long, 
 sometimes with an additional pair of scales. Fruit (immature) ellip- 
 soidal, somewhat wrinkled, 2x3 mm. : sepals somewhat parted. Plate 
 106. 
 
 Venezuelan-Isthmian region. The type from Colombia. 
 
 Specimens examined: COLOMBIA. Sta. Marta, near Bonda (Smith, 
 1281 the type). 
 
 Phoradendron stenophyllum n. sp. 
 
 Somewhat pseudodichotomous, the moderate slender branches with 
 basal cataphyls only, dioecious?. Internodes moderate (2-3x15-60 mm.), 
 nearly or quite smooth, from very slightly compressed quickly terete. 
 ( 1 ataphyls a basal pair often followed at 5 or 10 mm. by a second pair, 
 spreading, white-margined. Leaves narrowly oblong or linear, often fal- 
 cate or somewhat recurved, acute or mucronate, .3-.4x3-5 cm., sessile. 
 Spikes more or less clustered, moderate (becoming 35-40 mm.), with 
 about 4 rather slenderly fusiform joints some 10-flowered in 4+2 series 
 when pistillate: peduncle 3-12 mm. long, sometimes with a nearly basal 
 pair of scales: scales scarcely scarious or ciliate. Fruit (immature) sub- 
 globose, 3 mm. in diameter, smooth : sepals meeting. Plate 106. 
 
 Brazilian region. The type from Bahia. 
 
 Specimens examined: BRAZIL. Machado Portello, Bahia (Rose & 
 Russell, 19908, June 1915, the type). 
 
 PHORADENDRON CORIACEUM von Martius. 
 
 Phoradendron coriaceum von Martius, Eichler in v. Martius, Fl. Brasil. 
 vol.5, pt. 2. p. 121.^1868. 
 
82 THE GENUS PHOEADENDEON 
 
 Somewhat pseudodichotomous, the moderate rather slender branches 
 with basal cataphyls only, dioecious?. Internodes moderate (2-3x30-70 
 mm. ) , smooth, from very slightly compressed quickly terete. Cataphyls 
 a single pair toward the base, or a second or rarely a third and fourth 
 pair closely following, scarcely tubular, white-margined. Leaves lance- 
 olate to elliptical-oblanceolate, very obtuse, 1.5-2.5x5-7 cm., cuneately 
 subpetioled for scarcely 5 mm. Spikes more or less clustered, rather 
 short (20, lengthening to 30 mm.), with 3 or 4 somewhat tumid joints 
 scarcely 10-flowered in 4-f-2 series when pistillate : peduncle scarcely 2 
 mm. long, followed by one or two sterile joints: scales scarious-margined, 
 evanescently ciliate. Fruit ovoid, 3x4 mm., smooth : sepals inflexed. 
 Plate 107. 
 
 Brazilian region. The type from Minas Geraes. 
 
 Specimens examined : BRAZIL. Minas Geraes (v. Martins, the type) . 
 Piauhy (Gardner , 2625} . Alagoas (Gardner, 1319}. 
 
 With transiently somewhat 2-edged internodes and foliage connecting 
 the type with P. ulophyllum, to which in some respects it rather pertains, 
 it is Phoradendrum coriaceum quintense Urban, Bot. Jahrb. vol. 23. 
 Beibl. 57. p. 13. 1897, from Quinta, Rio de Janeiro (Glaziou, 4010}.- 
 Plate 107. 
 
 PHORADENDRON ULOPHYLLUM Eichler. 
 
 Phoradendron ulophyllum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 123. 1868. 
 
 Somewhat pseudodichotomous, the moderate slender branches with 
 basal cataphyls only, dioecious?. Internodes rather short (2x30-50 mm.), 
 smooth, the upper rhombically 2-edged. Cataphyls a single pair toward 
 the base, or one or two additional pairs at intervals of about 5 mm., 
 scarcely tubular, white-margined. Leaves more or less obovately oblance- 
 olate, 1.5-2x4-8 cm., cuneately subpetioled for about 5 mm. Spikes little 
 clustered, rather short (20-25 or 30 mm.), with about 4 rather tumid 
 joints some 14-flowered in 4-f-2 series when pistillate : peduncle 1-3 mm. 
 long, often followed by a sterile joint : scales scarious-margined, scarcely 
 ciliate. Fruit elliptical, 3x4 mm., smooth : sepals inflexed. Plate 108. 
 
 Brazilian region. The type from Rio de Janeiro. 
 
 Specimens examined : BRAZIL. Rio de Janeiro ( Gaudichaud, 573, 
 the type ; and in the Vienna herbarium as 473, 1833 ; Glaziou, 4009, 7663, 
 8730} . 
 
 PHORADENDRON HABROSTACHYUM Eichler. 
 
 Phoradendron habrostachyum Eichler in v. Martius, Fl. Brasil. vol. 5. 
 pt. 2. p. 111. 1868. 
 
 Scarcely forked, the moderate rather slender branches with basal 
 cataphyls only, dioecious, or monoecious on separate shoots. Internodes 
 
AEQUATORIALES RIGIDAE 83 
 
 short (2-3x20-30 mm.), smooth, the upper ancipital and dilated to 5 or 
 6 mm. below the nodes. Cataphyls 2-4 pairs, toward the base, scarcely 
 tubular. Leaves narrowly oblanceolate, very obtuse, scarcely 1x4 cm., 
 scarcely nerved, cuneately subpetioled for about 5 mm. Spikes more or 
 less clustered, moderate (scarcely 25 mm.), with 3-6 slender joints some- 
 what turbinately about 30-flowered when staminate and clavately half as 
 many flowered in 6 series when pistillate : peduncle 1-2 mm. long : scales 
 scarcely ciliate. Fruit said to be pale yellow, globose, smooth, 2.5-3 mm. 
 in diameter. Plate 109. 
 
 Brazilian region. The type from Minas Ueraes (v. Martins, the 
 type). 
 
 Specimens examined : BRAZIL. Minas Geraes (v. Martins, the type). 
 
 20. RIGIDAE. 
 
 Leaves moderate, thick, dull, scarcely evidently basinerved. Shoots 
 more or less compressed or ancipital. Cataphyls mostly 2 or 3 pairs, on 
 the basal joint only, exceptionally fertile. Spikes short, with small scales. 
 Flowers in 2, 4 or 6 series. Fruit mostly round, smooth and with nearly 
 closed sepals. Venezuela. 
 
 Leaves round-ovate (1:1.5). P. ovalifolium. 
 Leaves oblanceolate. 
 
 Very obtuse. P. longipetiolatum. 
 
 Subacute. P. bUineatum. 
 
 Leaves elliptical-obovate (1 :2). 
 
 Subsessile. P. rigidum. 
 
 Long-cuneate. P. Jenmani. 
 
 PHORADENDRON OVALIFOLIUM (Urban). 
 
 Plioradendrum ovalifolium Urban, Bot. Jahrb. vol. 23., Beibl. 57. p. 6. 
 1897. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous?. Internodes moderate (1-3x15-60 mm.), 
 smooth, terete. Cataphyls a nearly basal pair, usually with a second pair 
 5-10 mm. higher, bluntly spreading, white-margined. Leaves broadly 
 ovate to obovate, obtuse or subemarginate, 1.5-3x2.5-4 cm., rather ab- 
 ruptly petioled for 5-10 mm. Spikes mostly solitary, short ( 15, lengthen- 
 ing to 25 mm.), with about 3 joints some 6- to 10-flowered in 4+2 series: 
 peduncle scarcely 2 mm. long, sometimes followed by a more or less ster- 
 ile joint: scales white-margined. Fruit subglobose, nearly smooth, 3-4 
 mm. in diameter: sepals inflexed. Plate 110. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined. VENEZUELA. Tovar (Fendler, 1108, the 
 type). 
 
84 THE GENUS PHORADENDRON 
 
 PHOBADENDRON LONGIPETIOLATUM (Urban). 
 
 Phoradendrum longipetiolatum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 
 6. 1897. 
 
 Scarcely forked, the elongated branches with basal cataphyls only, 
 androgynous. Internodes rather long (2-5x50-70 mm.), smooth, the up- 
 per compressed rather than ancipital. Cataphyls usually a nearly basal 
 pair followed by a second some 5 mm. higher, tubular-bifid, white-mar- 
 gined, exceptionally floriferous like the spike-scales. Leaves falcately 
 narrowly lanceolate to oblanceolate, somewhat mucronately very obtuse, 
 1.5-3x5-10 cm., cuneately attenuate at base for 10-20 mm. Spikes often 
 clustered, short (15-20 mm.), with about 3 short joints some 20-flowered 
 in 6 series: peduncle 3 mm. long: scales evanescently ciliate. Fruit (im- 
 mature) subglobose, smooth. Plate 111. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1762, the 
 type). 
 
 PHORADENDRON BILINEATUM (Urban). 
 
 Phoradendrum bUineatum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 5. 
 1897. 
 
 More or less pseudodichotomous, the elongated branches with basal 
 cataphyls only, androgynous?. Internodes rather long (2-4x50-60 mm.), 
 smooth, the upper somewhat ancipital, with 2 rather persistent keels. 
 Cataphyls a single nearly basal pair, scarcely tubular, sometimes sub- 
 tending spikes. Leaves falcately lanceolate, subacute and often mucro- 
 nate, 2-3.5x9-11 cm., cuneately petioled for 10-15 mm. Spikes mostly sol- 
 itary, moderate (30 mm.), .with about 3 joints some 20-flowered in 4+2 
 series : peduncle 3 mm. long : scales scarcely ciliate. Fruit subglobose, 3 
 mm. in diameter, nearly smooth : sepals suberect. Plate 112. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1811, the 
 type). 
 
 PHORADENDRON RIGIDUM (Urban). 
 Phoradendrum rigidum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 7. 1897. 
 
 Scarcely forked, the elongated branches with basal cataphyls only, 
 androgynous. Internodes rather long (3-5x40-70 mm.), smooth, the up- 
 per ancipital and dilated below the nodes. Cataphyls usually 2, or some- 
 times 3 or 4 pairs, the lowermost shortly above the base, the others at 
 increasing intervals of 10-30 mm., tubular-bifid, white-margined, some- 
 times fertile. Leaves elliptical-obovate, submucronately very obtuse. 
 3x6-8 cm., cuneately contracted for about 5 mm. rather than petioled, 
 
AEQUATORIALES POLYGYNAE 85 
 
 very obscurely subpinnately nerved. Spikes solitary, short (20 mm.), 
 with 2 or 3 somewhat fusiform joints some 10-flowered when pistillate as 
 the upper are, and twice as numerous when staminate, as are the lower, 
 in 44-2 or 6 series: peduncle scarcely 2 mm. long. Fruit (immature) 
 subglobose, nearly smooth, 3 mm. in diameter: sepals closely inflexed. 
 Plate 113. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1105, the 
 type). 
 
 Phoradendron Jenmani n. sp. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous?. Internodes moderate (2-3x30-80 mm.), 
 smooth, nearly terete. Cataphyls a more or less closely basal pair fol- 
 lowed at 10-20 mm. by another, a third pair sometimes intervening, tubu- 
 lar-bifid. Leaves elliptical-obovate, very obtuse, 3-4x4-7 cm., cuneately 
 subpetioled for about 10 mm. Spikes more or less clustered, moderate 
 (20-30 mm.), with about 3 short slender joints about 4-flowered in 2 ser- 
 ies: peduncle 3 mm. long, usually with a basal pair of scales. Fruit 
 ovoid, nearly smooth, 4x6 mm. : sepals somewhat parted. Plate 114. 
 
 Cayenne region. The type from Demerara. 
 
 Specimens examined: BRITISH GUIANA. Bartica (Jenman, 2541, 
 -i 678 the type). 
 
 21. POLYGYNAE. 
 
 Leaves moderately large and broad, thick, basinerved. Shoots an- 
 cipital or 4-sided but not winged. Cataphyls a single pair, on the basal 
 joint only. Spikes long, with large scale-cups. Flowers in 4-[-2 or 6 
 series. Fruit round, smooth, with closed sepals. Andes. 
 
 Leaves dull, without evident nerves. P. poly gy num. 
 
 Leaves somewhat glossy, distinctly 3-nerved. P. Briquetianum. 
 
 PHORADENDRON POLYGYNUM Eichler. 
 
 Phoradendron polygynum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 124. 1868. 
 Spiciviscum polygynum Karsten, Fl. Columb. vol. 1. fasc. 2. p. 73. pi. 36. 
 
 1859. Schnitzlein, Iconographie. pi. 108. 
 
 Scarcely forked, the long branches with basal cataphyls only, andro- 
 gynous. Internodes rather long (2-5x30-100 mm.), smooth, the upper 
 rhombically ancipital or 4-sided, somewhat dilated below the nodes. Cata- 
 phyls a single pair, somewhat above the base, tubular. Leaves elliptical- 
 obovate to lanceolate, very obtuse, 3-5x6-12 cm., cuneately subsessile, dull 
 and very obscurely subpinnately nerved. Spikes more or less clustered. 
 
86 THE GENUS PHOBADENDBON 
 
 very long (120-160 mm.), with about 8 stout oblong joints some 60- to 
 80-flowered in 4+2 or 6 series, those from the upper nodes pistillate, and 
 those from the lowermost staminate: peduncle 5 mm. long: scales toward 
 the base forming deep funnel-shaped tubes. Fruit (immature) subglo- 
 bose, nearly smooth, 3 mm. in diameter: sepals closely inflexed. Plates 
 115-116. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1104). The 
 type, superbly pictured by its author, came from Lake Tacarigua, Cara- 
 cas (Karsten). 
 
 PHORADENDRON BRIQUETIANUM Trelease. 
 
 Plwradendron Briquetianum Trelease, Annuaire du Conserv. Jard. Bot., 
 Geneve, vol. 15-16. p. 351. 1913. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous?. Internodes moderate (2-3x30-60 mm.), smooth, the up- 
 per ancipital and somewhat dilated below the nodes. Cataphyls a single 
 pair, about 8 mm. above the base, tubular. Leaves narrowly elliptical- 
 oblong to broadly obovate, mucronately subacute to very obtuse or emar- 
 ginate, 1 or 1.5-3x5-6 cm., cuneately subpetioled for 10 mm., rather evi- 
 dently about 3-nerved, drying glossy. Spikes mostly solitary, long (fully 
 50 mm.), with some 3 oblong joints about 80-flowcred in 6 series: pedun- 
 cle 5-8 mm. long: scales not very long. Fruit?. Plate 117. 
 
 Andean region. The type from Colombia. 
 
 Specimens examined: COLOMBIA. Bogota (Linden, 796, Dec. 1842, 
 the type ; Holton, 658) . 
 
 22. OBLIQUAE. 
 
 Leaves large, dimidiately elliptical or lanceolate, fleshy, basinerved. 
 Shoots nearly terete. Flowers in 4+2 or 6 series. Fruit round, smooth, 
 with closed sepals. Andes. 
 
 Leaves very large and thick. P. obliquum. 
 
 PHORADENDRON OBLIQUUM Eichler. 
 
 Plwradendron obliquum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 134 m. 1868. 
 
 Phoradendrum obliquum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 2. 1897. 
 Viscum obliquum Presl, Epimel. Bot. p. 255. 1849. 
 
 Large, brittle, with basal cataphyls only?, androgynous?. Internodes 
 thick and long (5x100 mm. or more), transversely rugulose, nearly terete, 
 somewhat enlarged at the nodes. Cataphyls a nearly basal pair some- 
 times closely followed by another, and usually with a pair some 20-30 
 
AEQUATORIALES DIMIDIATAE 87 
 
 mm. higher, tubular. Leaves falcately or dimidiately lanceolate, very 
 obtuse, 4-8x10-23 cm., cuneately thick-petioled for 10-20 mm. Spikes 
 rr.ther long (50-60 mm.), with half a dozen short swollen joints some 24- 
 to 40-flowered in 4+2 or 6 series: peduncle stout, scarcely 5 mm. long, 
 with about 3 pairs of scales. Fruit (immature) subglobose, smooth, 3 
 mm. in diameter: sepals closely innexed. Plate 117. 
 
 Andean region. The type from Peru. 
 
 Specimens examined : PERU. Huannoca Mts. (Haenke, the type of 
 V. obliquwn in the Bohemian Museum at Prag and, without data, in the 
 herbarium of the German University at Prag). ECUADOR. Niebly (So- 
 diro, a, July 1873). Sto. Domingo to S. Nicolas (Sodiro, 148/16, Sept. 
 1892). 
 
 23. DIMIDIATAE. 
 
 Leaves rather large, dimidiately lance-elliptical, diying rather thin 
 and basi nerved. Shoots subterete to ancipital. Cataphyls 1 or frequently 
 2 or 3 pairs, on the basal joint only. Flowers in 4+2 or 6 series. Fruit 
 round, cellular-papillate, with closed sepals. Eastern South America. 
 
 Shoots nearly terete. 
 
 Spikes moderate (50-70 mm.). P. dimidiatum. 
 
 Spikes very long (finally 100 mm. or more). P. Perrotietii. 
 
 Shoots 2-edged. P. bathyoryctum. 
 
 PHORADENDRON DIMIDIATUM Eichler. 
 
 Phoradendron dimidiatum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 134 m. 1868. 
 Phoradendrum dimidiatum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 9. 
 
 1897. 
 Viscum dimidiatum Miquel, Linnaea. vol. 18. p. 58. 1844. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous. Internodes moderate (2-3x30-50 mm.), smooth, slightly 
 compressed. Cataphyls a pair somewhat above the base, sometimes fol- 
 lowed by a second some 10 mm. higher. Leaves more or less obliquely 
 or even dimidiately elliptical or sublanceolate, very obtuse, 2.5-3.5x6.5-10 
 cm., cuneately wing-petioled for 10 mm. Spikes solitary, rather long 
 (50-70 mm.), with half a dozen fusiform joints some 18- to 24- or fully 
 50-flowered in 4+2 or 6 series: peduncle 3-5 mm. long. Fruit f. 
 Plate 118. 
 
 Cayenne region ( ? exclusively) on Citrus. The type from Surinam. 
 
 Specimens examined: SURINAM. Orellana Creek (Focke, 716, the 
 type of V. dimidiatum) . 
 
88 THE GENUS PHORADENDRON 
 
 PHORADENDRON PERROTTETII Eichler. 
 
 Phoradendron Perrottetii Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 112. 1868. 
 Viscum Perrottetii de Candolle, Prodromus. vol. 4. p. 280. 1830. 
 
 Not forked, the rather long branches with basal cataphyls only, andro- 
 gynous?. Internodes moderate (2-3x30-90 mm.), nearly smooth, little 
 compressed and soon terete. Cataphyls a single pair some 5 mm. above 
 the base or occasionally 2 or 3 pairs at short intervals, blunt and spread- 
 ing. Leaves falcately or dimidiately elliptical or lance-elliptical, very 
 obtuse, 3-4x9-12 cm., cuneately subpetioled for 5-10 mm. Spikes more or 
 less clustered, long (30-50, becoming 100-130 mm.), with about 5 moder- 
 ately thickened oblong joints some 18- to 30- or 40-flowered in 4+2 or 6 
 series: peduncle scarcely 5 mm. long, usually followed by a nearly or 
 quite sterile joint. Fruit said to be whitish, subglobose, minutely cellu- 
 lar-papillate, 3-4 mm. in diameter: sepals closely inflexed. Plate 119. 
 
 Cayenne region. The type from Cayenne. 
 
 Specimens examined: FRENCH GUIANA (Perrottet, 228, 1820, the 
 type of V. Perrottetii; Sagot, 1291; Gabriel, 1802; Martin; Leprieur, 97, 
 194, 195, 1835, 1839). BRITISH GUIANA (Jenman, 2247, ?2542, 3795, 
 4821}. 
 
 Though the binomial of this species under Phoradendron must be as- 
 cribed to Eiehler, the Brazilian material referred here by him is rather 
 of P. bathyoryctum, neither species appearing to cross the Amazon valley. 
 
 PHORADENDRON BATHYORYCTUM Eichler. 
 
 Phoradendron bathyoryctum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 
 2. p. 123. pi. 43. 1868. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous?. Internodes rather long (2-5x60-100 mm.), 
 cellular-papillate, the upper more or less rhombically ancipital and en- 
 larged at the nodes. Cataphyls a single nearly basal pair, spreading. 
 Leaves more or 1 less obliquely elliptical to oblong, very obtuse, 2x6 to 
 mostly 4-7x10-15 cm., cuneately subpetioled for 5-10 mm. Spikes more 
 or less clustered, long (becoming 80-90 mm.), with about 4 thick oblong 
 joints turbinately some 30-flowered in 4 or 4-J-2 or exceptionally 6 series : 
 peduncle 5 mm. long, sometimes with a pair of basal scales. Fruit sub- 
 globose, minutely cellular-papillate, 3-4 mm. in diameter: sepals closely 
 inflexed. Plate 120. 
 
 Brazilian region, on Ficus, Odena, etc. The type from Piauhy. 
 
 Specimens examined: BRAZIL. Piauhy (Gardner, 2626, taken as 
 type, 2618, 2621 ; 3763 the type of P. Perrottetii var. parvifolia Eichler, 
 i. c. p. 113, 1868). Ceara (Gardner, 1680). [Goyaz?] (Gardner, 3762, 
 
AEQUATORIALES NITENTES 89 
 
 3765).~Bahia (Blancliet). Rio Negro (v. Martins). Lagoa Santa (Warm- 
 ing, 15, 369}. Porto Alegre (Czermak & Reineck, 199, with 2-3 pairs 
 of cataphyls). Without locality (Lund, 21; Riedl). BOLIVIA. Sta. Cruz 
 (Kuntze, 1). Mattogrosso (Kuntze, 3, 36). E. Velasco (Kuntze, 4). 
 
 24. NITENTES. 
 
 Leaves moderate, elliptical to narrowly lanceolate, drying glossy and 
 bronzed or golden, basinerved. Shoots compressed for a time. Cataphyls 
 1-4 pairs, on the basal joint only. Flowers in 4-f- 2 series. Fruit globose, 
 with inflexed sepals. South America. 
 
 Cataphyls not subtending spikes. 
 Leaves lance-elliptical. 
 
 Rather large. P. pellucidulum. 
 
 Rather small. P. holoxanthum. 
 
 Leaves narrowly lanceolate. 
 
 Spike-joints sometimes 20-flowered. P. nitidum. 
 
 Spike-joints scarcely 6-flowered. P. Selloi. 
 
 Upper cataphyls subtending flower-spikes. P. craspedophyllum. 
 
 PHORADENDRON PELLUCIDULUM Eichler. 
 
 Phoradendron pellucidulum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 112. 1868. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous?. Internodes rather short (2-5x20-40 mm.), dilated below 
 the nodes. Cataphyls a basal pair, sometimes rather closely followed by 
 a second or third pair, annular. Leaves obliquely elliptical to lance- 
 oblong, very obtuse, 2.5-3.5x7-9 cm., cuneately petioled for about 5 mm. 
 Spikes more or less clustered, short (20 mm.), with about 3 slightly fusi- 
 form slender joints some 8- to 18-flowered in 4+2 series: peduncle very 
 short, usually with a basal pair of scales. Fruit reddish, ellipsoidal, 
 cellular-papillate : sepals closely inflexed. Plate 121. 
 
 Brazilian region. The type from Rio Negro. 
 
 Specimens examined: BRAZIL. San Carlos, Rio Negro (Spruce, 3480, 
 the type). 
 
 PHORADENDRON HOLOXANTHUM Eichler. 
 
 Phoradendron holoxanthum Eichler in v. Martius, Fl. Brasil. vol. 5. pt 2 
 p. 116. 1868. 
 
 Somewhat pseudodichotomous or fasciculate, the moderate branches 
 with basal cataphyls only, androgynous?. Internodes rather short (2-3x 
 40-60 mm.), somewhat cellular-papillate, the upper rather sharply an- 
 cipital. Cataphyls a single pair towards the base or these followed by a 
 
90 THE GENUS PHOBADENDEON 
 
 second pair, scarcely tubular. Leaves elliptical, obtuse or emarginate, 
 2-2.5x5-6 cm., narrowly revolute, cuneately subpetioled for about 5 mm. 
 Spikes often clustered, moderate (15, lengthening in fruit to 40 mm.), 
 with 3 or 4 slender joints scarcely 10-flowered in 4-f-2 series : peduncle 
 scarcely 3 mm. long, sometimes with a second basal pair of scarcely ciliate 
 scales. Fruit red, globose, 4 mm. in diameter, cellular-papillate and 
 obscurely somewhat low-granular : sepals closely inflexed. Plate 122. 
 
 Brazilian region. The type from Brazil. 
 
 Specimens examined: BRAZIL. Without locality (Sello, 5847), the 
 type). 
 
 Phoradendron holoxanthum corallispicum n. var. 
 
 Leaves narrow and more lanceolate, rather acute, 1-1.5x5x7 cm. Spikes 
 diaphanous, red. Plate 122. 
 
 Brazilian region. The type from Rio de Janeiro. 
 
 Specimens examined : BRAZIL. Rio de Janeiro ( Glaziou, 8729, the 
 type). 
 
 PHORADENDRON NITIDUM Eichler. 
 
 Phoradendron nitidum Eichler in v. Martins, Fl. Brasil. vol. 5. pt. 2. 
 
 p 113. 1868. 
 
 Viscum nitidum Gardner, Hooker's London Journ. Bot. vol. 4. p. 105. 
 1845. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous?. Internodes rather short (2-3x20-50 mm.), 
 smooth and glossy, the upper somewhat compressed. Cataphyls a single 
 nearly basal bifid pair or 2-4 pairs at short intervals. Leaves linear- 
 lanceolate to spatulate-oblong, obtuse, 1-2x8-10 cm., slightly revolute, 
 gradually subpetioled. Spikes mostly solitary, rather short (20 mm.), 
 with about 4 slender joints some 10- to 20-flowered in 4+2 series : pedun- 
 cle 3 mm. long, sometimes with 1 or 2 large pairs of slightly ciliolate 
 scales. Fruit (immature) subglobose, 3 mm. in diameter, smooth: sepals 
 closely inflexed. Plate 123. 
 
 Brazilian region. The type from the Organ Mountains. 
 
 Specimens examined: BRAZIL. Organ Mts. at 4000 ft. (Gardner, 
 436, the type of V. nitidum). Minas Geraes (Lindberg, 253a). From 
 its 18-flowered spike-joints, may also be referred here a specimen from 
 Rio de Janeiro (Glaziou, 4013) otherwise very suggestive of P. Selloi. 
 
 PHORADENDRON SELLOI Eichler. 
 
 Phoradendron Selloi Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. p. 116. 
 1868. 
 
 Somewhat pseudodichotomous, or cymosely forked, the moderate slen- 
 der branches with basal cataphyls only, androgynous 1 Internodes mod- 
 
AEQUATORIALES LONGIBACCAE 91 
 
 erate (1-2x20-50 mm.), cellular-papillate, the upper ancipital for a time. 
 Cataphyls a single basal pair or 2 or 3 pairs at intervals of 5-10 mm., 
 scarcely tubular. Leaves narrowly lanceolate, obtuse, scarcely 1x7 cm., 
 narrowly revolute, gradually narrowed to the base. Spikes sometimes 
 truly terminal, mostly solitary, moderate (15, lengthening to 20 or 30 
 mm.), with 3 or 4 slender joints about 6-flowered in 4-f-2 series: peduncle 
 scarcely 3 mm. long, sometimes with a second sterile joint: scales very 
 obtuse. Fruit 3 mm. in diameter, cellular-papillate: sepals closely in- 
 flexed. Plate 123. 
 
 Brazilian region. The type from S. Paulo. 
 
 Specimens examined : BRAZIL. [S.Paulo] (Sello, 122, the type). 
 
 PHORADENDRON CRASPEDOPHYLLUM Eichler. 
 
 Phoradendron craspedophyllum Eichler in v. Martius, Fl. Brasil. vol. 5. 
 pt. 2. p. 124. pi. 37. 1868. 
 
 Somewhat pseudodichotomous and fasciculate, the moderate branches 
 with basal cataphyls only, androgynous. Internodes rather short (2-3x 
 20-40 mm. ) , cellular-papillate, the upper somewhat ancipital. Cataphyls 
 a single nearly basal sterile pair, and another pair, fertile as in P. crassi- 
 folium etc., about the middle of the joint, scarcely tubular. Leaves ellip- 
 tical to ovate or broadly lanceolate, mucronate, acute to obtuse, 2.5-3x 
 4.5-6 cm., narrowly revolute, rather abruptly contracted for 5 mm. at 
 base. Spikes often clustered, rather short (10-15 mm.), with about 5 
 slender joints some 6-flowered in 4-|-2 series : peduncle 1 mm. long : scales 
 pointed, somewhat eiliate. Fruit globose, 3 mm. in diameter, smooth : 
 sepals closely inflexed. Plate 124. 
 
 Brazilian region. The type from S. Paulo. 
 
 Specimens examined : BRAZIL. S. Paulo (Sello, 155, 1836, the type ; 
 Burchell, 4559). 
 
 25. LONGIBACCAE. 
 
 Leaves moderate, broad or short, basinerved. Shoots compressed or 
 mostly for a time 2-edged. Cataphyls a single pair, on the basal joint 
 only. Flowers in 4 or 4+2 series. Fruit elongated, with erect parted 
 sepals. South America. 
 
 Leaves obovate-elliptical. 
 
 Abruptly subpetioled, rather thick. P. craspedophylloides. 
 
 Very cuneate, thin. P. obtusissimum. 
 
 Leaves cleaver-shaped to subelliptical. P. acinacifolium. 
 
 Leaves oblanceolate, small. P. reductum. 
 
92 THE GENUS PHORADENDRON 
 
 Phoradendron craspedophylloides n. sp. 
 
 More or less pseudodichotomous or fasciculately branched, with basal 
 cataphyls only, androgynous?. Internodes moderate (2-3x30-50 mm.), 
 slightly cellular-papillate, the upper somewhat compressed. Cataphyls 
 solitary, basal, scarcely tubular. Leaves elliptical, very obtuse or some- 
 what emarginate, 2-3.5x4.5-6 cm., slightly revolute, rather abruptly con- 
 tracted into a broad subpetiolar base for some 10 mm., rather thick, dry- 
 ing glossy and golden. Spikes clustered, short (10-15 mm.), with about 
 3 slender joints some 6-flowered in 4+2 series: peduncle 1 mm. long, 
 usually followed by a longer sterile joint : scales very blunt, ciliate. Fruit 
 ellipsoidal-oblong, about 4x8 mm., smooth : sepals erect. Plate 124. 
 
 Brazilian region. The type from Bahia. 
 
 Specimens examined: BRAZIL. Vittoria, Bahia (Sello, the type). 
 Piauhy (Gardner, 2622). " Brasilia tropica " (Sello, 234). Without data 
 (Herb. Link.). 
 
 PHORADENDRON OBTUSISSIMUM Eichler. 
 
 Plioradendron obtusissimum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 134 m. 1868. 
 
 Viscum obtusissimum, Miquel, Linnaea. vol. 18. p. 602. 1844. 
 Phoradendrum obtusissimum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 9. 
 
 1897. 
 
 Somewhat pseudodichotomous, the long branches with basal cataphyls 
 only, androgynous?. Internodes moderate (2-3x40-60 mm.), nearly 
 smooth, the upper somewhat rhombically compressed. Cataphyls a single 
 pair, basal, scarcely tubular. Leaves obovate, very obtuse or emarginate, 
 3-4x5 cm., cuneately narrowed for 10-15 mm. Spikes clustered, short (10 
 mm.), with 2 or 3 slender joints about 6-flowered in 4 or 4+2 series: 
 peduncle 2 mm. long : scales ciliate. Fruit white, fusiform, 3-4x8-10 mm., 
 smooth : sepals erect. Plate 125. 
 
 Cayenne region. The type from Surinam. 
 
 Specimens examined : SURINAM. Para Superiore (Focke, 1019, the 
 type of V. obtusissimum). BRITISH GUIANA (Jenman, 2539, 4678). 
 
 PHORADENDRON ACINACIFOLIUM von Martius. 
 
 Phoradendron acinaci folium von Martius. Eichler in von Martius, Fl. 
 Brasil. vol. 5. pt. 2. p. 117. pi. 37. 1868. 
 
 More or less pseudodichotomous, the rather long slender branches 
 with basal cataphyls only, androgynous. Internodes rather short (l-2x 
 20-40 mm.), somewhat cellular-papillate, the upper somewhat compressed 
 and dilated upwards. Cataphyls a single pair, nearly basal, scarcely 
 tubular, ciliolate. Leaves rather falcately oblanceolate to obovate-ellip- 
 
AEQUATOEIALES VERNICOSAE 93 
 
 tical, very obtuse, 1.5-3x4-6 cm., cuneately slender-subpetioled for 5-10 
 mm. Spikes often clustered, short (10-15 mm.), with about 3 slender 
 joints some 6-flowered in 4-f-2 series: peduncle 1 mm. long, sometimes 
 followed by a longer sterile joint : scales blunt, ciliate. Fruit ellipsoidal, 
 equally tapered at both ends, 3-4x6 or even 8-10 mm., smooth: sepals 
 erect or spreading. Plates 126, 127. 
 
 Brazilian region ( ? exclusively) on Lauraceae and Compositae. The 
 type from Rio de Janeiro. 
 
 Specimens examined: BRAZIL. Bahia (v. Martins). Rio de Janeiro 
 (Gaudichaud, 574, taken as type; Sello, 511, 597; Mikan; Glaziou, 
 6073). Falls of Madeira (Rusby, 1542). PARAGUAY. Pilcomayo River 
 ( Hassler, 191 ; Morong, 1546) . ' ' Central Paraguay ' ' ( Morong, 358) . 
 
 Phoradendron reductum n. sp. 
 
 More or less pseudodichotomous, the slender branches with basal cata- 
 phyls only, androgynous?. Internodes short and slender (1-2x20-25 
 mm.), somewhat cellular-papillate, the upper slightly compressed and 
 dilated. Cataphyls a single nearly basal pair, exceptionally followed by 
 a second, scarcely tubular. Leaves oblanceolate or subelliptical, very ob- 
 tuse, 1x3 cm., cuneately subpetioled for about 3 mm. Spikes short 
 (scarcely 20 mm. in fruit), with about 3 slender joints subverticillately 
 about 6-flowered toward the top : peduncle nearly suppressed, sometimes 
 followed by 1 or 2 sterile joints. Fruit ellipsoidal or ovoid, smooth, 3x5 
 mm. : sepals erect. Plate 127. 
 
 Brazilian region. The type from Paraguay. 
 
 Specimens examined: PARAGUAY, "South Paraguay" (Kuntze, 15, 
 Sept. 1892, the type). 
 
 26, VERNICOSAE. 
 
 Leaves moderate, lanceolate to obovate, rather thin and evidently 
 basinerved. Shoots compressed rather than ancipital. Cataphyls a single 
 pair, on the basal joint only. Flowers usually in 2 decussating series as 
 in Dendrophihora. Fruit mostly wrinkled and with closed sepals. Mex- 
 ico and Central America. 
 
 Spikes filiform : shoots much flattened. 
 
 Joints several-flowered. Mexico. P. Wawrae. 
 
 Joints 2-flowered. Guatemala. P. cheirocarpum. 
 Spikes thicker though not stout : shoots nearly terete. 
 
 Leaves prevailingly lanceolate. Honduras. P. decussatum. 
 
 Leaves prevailingly obovate. Yucatan. P. vernicosum. 
 
94 
 
 Phoradendron Wawrae n. sp. 
 
 More or less pseudodichotomous, the elongated branches with basal 
 eataphyls only, dioecious?. Internodes rather slender (1-3x30-60 mm.), 
 somewhat granular, for a time subancipitally flattened and dilated up- 
 wards. Cataphyls a single basal pair, very short-annular. Leaves lance- 
 olate or oblanceolate, typically very obtuse, 1.5-3x5-10 cm., cuneately at- 
 tenuate and subpetioled for about 5 mm. Spikes mostly clustered, short 
 (10-15 mm.), with 3 or 4 filiform joints subverticillately 2- or 4- to 8-flow- 
 ered near the ends when pistillate : peduncle 2 mm. long, with a pair of 
 basal scales. Fruit (immature) goblet-shaped and with widely parted 
 sepals. Plate 128. 
 
 Eastern Sierra Madre region of Mexico. The type from Tuxpam. 
 
 Specimens examined: MEXICO. Tuxpam (Wawra, 747, the type). 
 Valley of Cordoba (Bourgeau, 1482). 
 
 Phoradendron cheirocarpum n. sp. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 eataphyls only, dioecious! Internodes moderate (2-3x25-60 mm.), 
 smooth, the upper compressed and dilated to 5 mm. below the nodes. 
 Cataphyls a single basal pair, scarcely tubular. Leaves more or less fal- 
 cately oblanceolate, very obtuse, 1.5x5-9 cm., somewhat revolutely cune- 
 ate for about 5 mm. rather than petioled. Spikes clustered, short (15 
 mm.), with about 4 slender oblong 2-flowered joints: peduncle 1-2 mm. 
 long : scales blunt, somewhat ciliate. Fruit goblet-shaped, 3x6 mm., the 
 lower half stipitately contracted, smooth: sepals erect or spreading. 
 Plate 129. 
 
 Guatemalan region. The type from Cubilquitz. 
 
 Specimens examined: GUATEMALA. Cubilquitz, Alta Verapaz (v. 
 Tuerckheim, 7661, July 1900, the type). 
 
 Phoradendron decussatuni n. sp. 
 
 Scarcely forked, the moderately long branches with basal cataphyls 
 only, dioecious. Internodes moderate (2-4x30-70 mm.), minutely papil- 
 late, varnished when young, somewhat compressed and enlarged but not 
 angled below the nodes. Cataphyls usually a single pair toward the base, 
 rather acute and spreading. Leaves lanceolate to short-obovate or ellip- 
 tical, very obtuse, 1.5-2.5x4 or 5-8 cm., cuneately subpetioled for 5 mm. 
 Spikes mostly solitary, rather short (20 mm.), with about 5 round joints 
 decussately 2-flowered when pistillate : peduncle 2 mm. long, with a pair 
 of scales about the middle. Fruit (immature) ovoid, somewhat rugulose, 
 3x4 mm. : sepals closely inflexed. Plate 129. 
 
AEQUATORIALES CAMPBELLIAE 95 
 
 Yucatecan region. The type from Honduras. 
 
 Specimens examined : HONDURAS. Comyagua to Sabana Larga (Nie- 
 derlein, 95, Feb. 23, 1898, the type). 
 
 PHORADENDRON VERNICOSUM Greenman. 
 
 Phoradendron vernicosum Greenman, Publ. Field Columb. Mus., Botany 
 vol. 2. p. 250. 1897. 
 
 Scarcely forked, the moderately long branches with basal cataphyls 
 only, dioecious. Internodes rather short and thick (2-4x20-40 mm.) , min- 
 utely papillate, varnished when young, elliptically dilated rather than 
 compressed below the nodes. Cataphyls a single pair toward the base, 
 short-annular. Leaves subelliptical or obovate varying into lanceolate, 
 very obtuse, 1-2x2.5-4 cm., cuneately subpetioled for scarcely 5 mm. 
 Spikes often clustered, short (10-15, lengthening to 20 mm.), with 3 or 4 
 short oblong joints decussately 2-flowered when pistillate: peduncle 1-2 
 mm. long, sometimes with a second pair of scales. Fruit ovoid, somewhat 
 rugulose-warty, 4x5 mm. : sepals closely inflexed. Plate 130. 
 
 Yucatecan region. The type from Yucatan. 
 
 Specimens examined: MEXICO. Izamal, Yucatan (Greenman, 440, 
 Feb. 22, 1906, the type). Silan (Gaumer, 876, 1895). 
 
 27. CAMPBELLIAE. 
 
 Leaves moderate, lanceolate, rather herbaceous, basinerved, somewhat 
 veiny. Shoots much flattened or subrhombic. Cataphyls 1 or 2 pairs, 
 on the basal joint only. Pistillate flowers in 2 or 4 series. Fruit round 
 or ovoid, mostly wrinkled, with suberect parted sepals. West Indies. 
 
 Shoots 2-edged, dilated upwards. 
 
 Leaves obtuse : cataphyls 2 pairs. P. Fid. 
 
 Leaves usually blunt-acuminate : cataphyls 1 pair. P. Campbellii. 
 Shoots rhombic in section, little dilated. P. Grisebachianum. 
 
 PHORADENDRON FICI (Urban). 
 Phoradendrum Fid Urban, Symbolae Antillanae. vol. 5. p. 333. 1907. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious?. Internodes short (2-3x20 mm.), transversely 
 wrinkled in drying, ancipitally compressed and somewhat dilated up- 
 wards. Cataphyls a nearly basal pair, usually followed at a short dis- 
 tance by a second or a third pair, truncately annular. Leaves falcately 
 rather broadly lanceolate, obtuse, 1.5-2.5 or even 3x5-9 cm., cuneately 
 subpetioled for about 10 mm. Spikes solitary, moderate (scarcely 30 mm. 
 long), with about 3 slender joints 2- to 6-flowered: peduncle some 5 mm. 
 
96 THE GENUS PHORADENDRON 
 
 long, with a pair of scales near the base. Fruit greenish yellow, ellip- 
 soidal, 3x5 mm., wrinkled : sepals somewhat parted. Plate 131. 
 
 Antillean region ( ? exclusively) on Ficus. The type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA (Harris, 9220, Apr. 19, 
 1906, the type; Britton & Hottick, 1861}. 
 
 PHORADENDRON CAMPBELLII (Krug & Urban). 
 
 Phoradendrum Campbellii Krug & Urban, Bot. Jahrb. vol. 24. p. 44. 
 1897. 
 
 More or less pseudodichotomous, the elongated spreading branches 
 with basal cataphyls only, dioecious. Internodes rather short ( 1-3x15-40 
 mm.), smooth, slightly varnished when young, rhombically ancipital and 
 slightly dilated upwards. Cataphyls a single nearly basal pair, rather 
 spreading. Leaves broadly lanceolate and blunt-acuminate to oblance- 
 olate and very obtuse, 1.5-3x4-8 cm., cuneately subsessile. Spikes more 
 or less clustered, short (10-15 mm.), with 3 or 4 short slender joints 
 decussately 2-flowered or occasionally subverticillately 4-flowered, when 
 pistillate: peduncle scarcely 2 mm. long, sometimes with a second pair 
 of scales. Fruit (immature) ellipsoid, nearly smooth: sepals somewhat 
 parted. Plate 132. 
 
 Antillean region ( ? exclusively) on Pisonia and Nectandra. The 
 type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA. Wareka Road (Camp- 
 bell, 6398 in part, Aug. 10, 1896 the type, 6604) . Parish of Manchester 
 (Britton, 3703, 3734, 3765, 3773). 
 
 PHORADENDRON GRISEBACHIANUM Eichler. 
 
 Phoradendron Grisebachianum Eichler in v. Martius, Fl. Brasil. vol. 5. 
 
 pt. 2. p. 127 without name, 134 m. 1868. 
 Plwradendrum Grisebachianum Urban, Bot. Jahrb. vol. 24. p. 45. 1897. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious. Internodes rather short (2-3x20-40 mm.), 
 smooth, rhombically ancipital or quadrangular, slightly enlarged up- 
 wards. Cataphyls a single pair 2-4 mm. above the base, sometimes fol- 
 lowed by a second pair some 10 mm. higher, annular. Leaves broadly 
 lanceolate or ovate-lanceolate to subelliptical, very obtuse or bluntly sub- 
 acuminate, 2.5-4x5-8 or even 8x15 cm., attenuately or rather abruptly 
 wing-petioled for 5-10 mm. Spikes solitary, moderate (30, lengthening to 
 40 mm.), with about 4 slender joints subverticillately 4- to 8-flowered 
 about the top when pistillate and some 18- to 24-flowered in 6 series when 
 staminate : peduncle 2-5 mm. long, sometimes with a second pair of scales. 
 Fruit orange-scarlet, tipped with yellow, globose, not warty but fleshy 
 
97 
 
 and drying very rugose, 3 mm. in diameter : sepals not meeting. Plate 
 133. 
 
 Antillean region ( ? exclusively) on Coccoloba, Ficus and Nectandra. 
 The type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA (Alexander; Britton, 965, 
 977, 1467, 3144, 3215, Britton & Hollick, 2772; Crawford, 783; Brown, 
 51; Hansen, 1897; Harris, 6341, taken as the type, there being no rep- 
 resentative in Grisebach's herbarium; 6376, 6397, 10202, 10861). 
 
 28. CHRYSOCARPAE. 
 
 Leaves moderate, lanceolate or elliptical to round-obovate, rather 
 opaque and dull but often raised-nerved from the base. Shoots mostly 
 2-edged for a time, sometimes at first rhombically 4-lined. Cataphyls 1 
 or exceptionally 2 pairs, on the basal joint only. Flowers variously in 
 2, 4, or 4-J-2 series. Fruit ovoid, mostly golden-dotted, essentially smooth, 
 with closely inflexed sepals. West Indies. 
 
 Leaves lanceolate : flowers numerous. 
 
 Broad (up to 4 cm.). P. chrysocarpum. 
 
 Moderate ( scarcely 3 cm. ) . 
 
 Stem sharply ancipital. P. anceps. 
 
 Stem quickly terete. P. Hartii. 
 
 Leaves linear-lanceolate : flowers few, sometimes only 2. P. haitense. 
 
 Leaves elliptical. 
 
 Strongly nerved : pistillate flowers 2. P. Wattii. 
 
 Obscurely nerved. 
 Stem ancipital. 
 
 Leaves petioled. P. Helleri. 
 
 Leaves subsessile. P. Dussii. 
 
 Stem quickly terete. P. crenulatum. 
 
 Leaves round-obovate. P. Gundlachii. 
 
 PHORADENDRON CHRYSOCARPUM (Krug & Urban). 
 
 PJioradendrum chrysocarpum Krug & Urban, Bot. Jahrb. vol. 24. p. 39. 
 
 1897. 
 P. martinicense Grisebach, Fl. Br. W. I. p. 314. 1860, in part. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous. Internodes moderate (2-3x40-60 mm.), smooth, sharply 
 ancipital or at first rhombically compressed. Cataphyls a single pair, 
 nearly basal, scarcely tubular, white-margined. Leaves multiform, from 
 rather narrowly lanceolate to round-ovate, characteristically ovate-lance- 
 olate, mucronately very obtuse, 2.5-4x6-8 cm., cuneately narrowed for 
 5-10 mm. rather than petioled. Spikes mostly clustered, moderate ( 15-35 
 
98 THE GENUS PHOEADENDRON 
 
 or even 45 mm.), with about 3 slender joints mostly 10- to 20-flowered in 
 4+2 series: peduncle 2-4 mm. long, usually followed by a sterile joint: 
 scales white-margined. Fruit variously said to be white or yellow, ovoid, 
 3x4-5 mm., smooth, golden-glistening when dry, like other young parts 
 of the plant : sepals closely inflexed. Plate 134. 
 
 Antillean and Caribbean regions. The type from Puerto Rico. 
 
 Specimens examined: ANTILLES. PUERTO Rico (Bertero, 439 in 
 part, the type; Eggers, 880, 1147; Sintenis, 3391, 887, 4894, 5297, 6060; 
 Garber, 11; Gundlach, 1472; Krug, 537; Stdhl, 1043b; Britton, Britton & 
 Marble, 1946; Britton & Cowell, 1301, 1352; Britton & Shafer, 1831; Un- 
 derwood & Griggs, 671; Stevens, 5825, 5825a, 5899, 5931}. ST. THOMAS 
 (Shafer & Fitch, 1472}. CARIBBEES. ST. CROIX (Ricksecker, 302}. GUADE- 
 LOUPE (Duss, 2966, 2969 in part, 3902 in part, 4418 in part). DOMINICA 
 (Imray, 212; Eggers, 926}. MARTINIQUE (Duss, 101 in part, 1374b in 
 part, 4418 in part; Hahn, 550, 733, 1132}. ST. VINCENT (Smith, 245 in 
 part, 1305; Herb. Hooker.; Herb. Haynald.}. 
 
 PHORADENDRON ANCEPS (Krug & Urban). 
 
 Phoradendrum anceps Krug & Urban, Bot. Jahrb. vol. 24. p. 40. 1897. 
 Viscum anceps Sprengel, Syst. vol. 1. p. 487. 1825. de Candolle, Prodro- 
 mus. vol. 4. p. 282. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous. Internodes moderate (2-3x40-50 mm.), smooth, compressed 
 or 2-keeled. Cataphyls a single pair, nearly basal, slightly tubular, white- 
 margined. Leaves somewhat falcately lanceolate, very obtuse, 2-4x9-15 
 cm., cuneately petioled for 10-15 mm. Spikes more or less clustered, 
 rather short (15-20, lengthening to 30 mm.), with about 3 slender joints 
 rather turbinately some 18-flowered in 4+2 series: peduncle scarcely 
 2 mm. long: scales slightly scarious-margined. Fruit said to be yellow, 
 subglobose, 4 mm. in diameter, smooth: sepals somewhat parted. Plate 
 135. 
 
 Antillean region. The type from Santo Domingo. 
 
 Specimens examined: ANTILLES. SANTO DOMINGO (Bertero, 439 in 
 part, the type collection of V. anceps, at the National Museum of Prag, 
 from Sprengel ; also, as from Puerto Rico, under the same number, asso- 
 ciated with P. chrysocarpum; Wright, Parry & Brummel, 458; Poiteau, 
 from Ventenat's herbarium; Eggers, 1682}. 
 
 PHORADENDRON HARTII (Krug & Urban). 
 Phoradendrum Hatrtii Krug & Urban, Bot. Jahrb. v. 24. p. 40. 1897. 
 
 More or less pseudodichotomous, the elongated branches with basal 
 cataphyls only, dioecious?. Internodes rather long (2-3x40-80 mm.), 
 
AEQUATOEIALE8 CHEYSOCARPAE 99 
 
 smooth, the upper somewhat ancipitally compressed. Cataphyls mostly 
 a single pair, nearly basal, tubular-bifid, white-margined. Leaves more 
 or less falcately lanceolate, obtuse, 1.5-2.5x8-12 cm., cuneately narrowed 
 below rather than petioled. Spikes mostly clustered, rather short (20 
 mm.), with about 4 oblong joints some 10-flowered in 4-J-2 series: pedun- 
 cle almost suppressed: scales somewhat ciliate. Fruit ovoid, 3x4 mm., 
 smooth : sepals closely inflexed. Plate 136. 
 
 Caribbean region. The type from Trinidad. 
 
 Specimens examined: CARIBBEES. TRINIDAD (Hart, 6101, Aug. 1896, 
 the type; Lunt, 6117}. 
 
 PHORADENDRON HAITENSE (Urban). 
 
 Phoradendrum haitense Urban, Symbolae Antillanae. vol. 5. p. 334. 1907. 
 
 More or less pseudodichotomous, the elongated branches with basal 
 cataphyls only, androgynous. Internodes short (2-3x30 mm.), smooth, 
 ancipital and somewhat dilated upwards. Cataphyls a nearly basal pair, 
 often with a second pair scarcely 5 mm. higher, scarcely tubular, white- 
 margined. Leaves narrowly oblong-lanceolate, abruptly very obtuse, 
 1x7-10 cm., long-attenuate into the subpetiolar base. Spikes mostly soli- 
 tary, moderate (25-30 mm.), with about 3 slender joints 2- to 6- or 10- 
 flowered in 2, 4 or 4+2 series : peduncle about 3 mm. long, usually with a 
 pair of basal scales. Fruit subglobose, 3 mm. in diameter, smooth : sepals 
 parted. Plate 135. 
 
 Antillean region ( ? exclusively) on Swietenia. The type from Haiti. 
 
 Specimens examined: ANTILLES. HAITI (Picarda, 1666, July 1897, 
 the type, 1640). 
 
 PHORADENDRON WATTII (Krug & Urban). 
 Phoradendrum Wattii Krug & Urban, Bot. Jahrb. v. 24. p. 43. 1897. 
 
 More or less pseudodichotomous, the long branches with basal cata- 
 phyls only, dioecious. Internodes moderate (2-3x30-50 mm.), minutely 
 papillate and for a time varnished like the young foliage, somewhat com- 
 pressed rather than ancipital. Cataphyls a single pair 2-3 mm. above 
 the base, or 2 pairs the first nearly basal and the second, exceptionally 
 fertile, some 5 mm. higher, acute. Leaves more or less falcately elliptical 
 to broadly oblanceolate, very obtuse, 1.5-2.5x4-7 cm., cuneately sub- 
 petioled for about 5 mm. Spikes more or less clustered, about 4-jointed : 
 short (10 mm.), with short 2-flowered joints when pistillate, and longer 
 (30 mm.), with long 10- to 20-flowered joints when staminate: peduncle 
 nearly suppressed : scales and deep reeeptacular cups ciliate. Fruit pale 
 
100 THE GENUS PHOEADENDEON 
 
 yellow, ellipsoidal, 3x5 mm., somewhat wrinkled in drying: sepals trun- 
 cately inflexed. Plates 137, 138. 
 
 Antillean region, on Coccoloba, Colubrina, Hypelate, Laguncularia, 
 Piscidia, etc. The type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA (Hitchcock, Dec. 14. 1890, 
 to be taken as type; Watt, 6221; Campbell, 6385, 6386, 6401; Harris, 
 6395, 6402, 6599, 6680, 6711, 9696; Harris & Britton, 10519; Britton, 
 355; Marble, 231}. 
 
 A staminate specimen (Harris, 10188} with the spikes some 40 mm. 
 long, with joints as much as 10 mm. long and 26-flowered, growing on 
 other mistletoes, may be differentiated as var. product a. Plate 138. 
 
 Phoradendron Helleri n. sp. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes rather short (2-3x20-50 mm.), 
 cellular-papillate or smooth, the upper compressed. Cataphyls a single 
 pair, nearly basal, slightly tubular, white-margined. Leaves subelliptical. 
 very obtuse, 1.5-2x3-5 cm., cuneately petioled for 5-10 mm. Spikes more 
 or less clustered, rather short (15-25 mm.), with abqjut 3 slender joints 
 some 10- to 18-flowered in 4-J-2 series : peduncle 2-4 mm. long, sometimes 
 with 1 or 2 lower pairs of white-margined scales. Fruit drying rusty 
 red, ovoid, 4 mm. in diameter, somewhat cellular-papillate, when young 
 golden-glistening like other young parts, as is general in the group : 
 sepals nearly or quite closed. Plate 139. 
 
 Antillean region. The type from Puerto Rico. 
 
 Specimens examined: ANTILLES. PUERTO Rico. East of Ponce 
 (Heller, 6188, Dec. 3, 1902, the type). Colonia S. Miguel ( ? Britton & 
 Shafer, 1640}. Yauco (Stevens, 5825c}. 
 
 A Santo Domingan plant (Fuertes, 1531b} with the stem and foliage 
 drying red, otherwise intermediate between this and the following spe- 
 cies but with red fruit, may be known as var. sanguinea. Plate 140. 
 
 Phoradendron Dussii n. comb. 
 
 Phoradendrum chrysocarpum Dussii Urban, Symbolae Antillanae. vol. 5. 
 p. 333. 1907. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes rather short (2-3x20-40 mm.), 
 smooth, the upper ancipitally compressed. Cataphyls a nearly basal pair, 
 usually followed by a .second 3-8 mm. higher, tubular-bifid, white-mar- 
 gined. Leaves elliptical tending towards oblanceolate or obovate, very 
 obtuse, sometimes mucronulate, 1-2 or 2.5x2-4 cm., cuneately subpetioled 
 for some 3 mm. Spikes more or less clustered, short (15, lengthening to 
 
AEQUATORIALE8 CHRYSOCARPAE 101 
 
 20 or 25 mm.), with about 3 slender 2- to 6- or 8-flowered joints : peduncle 
 scarcely 2 mm. long, sometimes followed by a longer sterile joint : scales 
 white-margined. Fruit ovoid-ellipsoidal, 3x4-5 mm., smooth: sepals 
 closely inflexed. Plate 141. 
 
 Caribbean region. The type from Guadeloupe. 
 
 Specimens examined: CARIBBEES. GUADELOUPE (Duss, 3904 in part, 
 the type of P. chrysocarpum Dussi; also in part, 2968, 2969, 4099, 
 4417). 
 
 PHORADENDRON CRENULATUM (Urban). 
 
 Phoradendrum crenulatum Urban, Symbolae Antillanae. vol. 5. p. 332. 
 1907. 
 
 Pseudodichotomous or trichotomous, the rather long branches with 
 basal cataphyls only, androgynous. Internodes moderate (2-4x20-30 
 mm.), smooth, terete or somewhat compressed above. Cataphyls 1 or 2 
 nearly basal pairs, somewhat tubular, white-margined. Leaves falcately 
 subelliptical, very obtuse, 2-2.5x4-6 cm., cuneately narrowed for about 
 5 mm. rather than petioled, finely crisped or brokenly crenulate. Spikes 
 mostly solitary, rather short (20 mm.), with about 5 short joints some 
 10- to 14-flowered in 4-f-2 series : peduncle scarcely 3 mm. long, with one 
 or more basal pairs of white-margined subciliate scales. Fruit?. Plate 
 140. 
 
 Antillean region ( ? exclusively) on Cordia. The type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA (Harris, 6659, Aug. 12, 
 1896, the type). 
 
 PHORADENDRON GUNDLACHII (Krug & Urban). 
 
 Phoradendrum Gundlachii Krug & Urban, Bot. Jahrb. vol. 24. p. 44. 
 1897. 
 
 More or less pseudodichotomous, the elongated branches with basal 
 cataphyls only, androgynous. Internodes rather short (2-3x20-30 mm.), 
 smooth, for a time ancipital or somewhat rhombic. Cataphyls a nearly 
 basal pair, sometimes followed by a second at some 5 mm., rather obtuse, 
 separate. Leaves elliptical-obovate, very obtuse, 2-3x4-5 cm., somewhat 
 abruptly wing-petioled for 5-10 mm. Spikes more or less clustered, short 
 (15-20 mm.), with about 3 somewhat tumid joints some 6- to 10- or even 
 18-flowered in 4+2 series: peduncle about 3 mm. long: scales ciliate. 
 Fruit white, ellipsoidal, about 4 mm. long, nearly smooth : sepals closely 
 inflexed. Plate 142. 
 
 Antillean region. The type from Cuba. 
 
 Specimens examined: ANTILLES. CUBA: Mt. Guajaibon (Wright, 
 2650, the type, as of P. flavescens f., of Grisebach). Camaguey (Brit- 
 ton, Britton & Cowell, 13106) . Sta. Clara (Shafer, 12178) . 
 
102 THE GENUS PHOEADENDKON 
 
 29. DOMINGENSES. 
 
 Leaves moderate and lanceolate, or spatulate and rather small, rather 
 thin, basinerved. Shoots rhombically ancipital. Cataphyls a single pair, 
 on the basal joint only. Pistillate flowers mostly decussately paired, as 
 in Dendrophthora. Fruiting sepals not meeting. West Indies. 
 
 Leaves spatulate, blunt. P. domingense. 
 
 Phoradendron doming-ense n. comb. 
 
 Loranthus domingensis Desvaux in Ham., Prodr. p. 33. 1825. 
 PhtJiirusa domingensis Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 134 i. 1868. 
 Dendropemon domingensis Van Tieghem, Bull. Soc. Bot. Fr. vol. 42. 
 
 p. 170. 1895. 
 Phoradendrum trinervium domingense Krug & Urban, Bot. Jahrb. vol. 
 
 24. p. 38. 1897. 
 
 More or less pseudodichotomous, the moderate crowded branches with 
 basal cataphyls only, dioecious. Internodes short ( 1-3x10-25 or occasion- 
 ally 50 mm.), nearly smooth, rhombically ancipital or 4-angled, scarcely 
 dilated upwards. Cataphyls a single basal pair, somewhat annular. 
 Leaves spatulately obovate, very obtuse, 1-1.5x2.5-4.5 cm., cuneately long- 
 attenuate rather than petioled. Spikes mostly clustered, rather short 
 (10-15, lengthening to 30 mm.), with about 3 short slender joints decuss- 
 ately 2-flowered when pistillate : peduncle 3-4 mm. long, with a pair of 
 scales at base. Fruit golden orange, ellipsoidal, 3x5 mm. : sepals erect, 
 parted. Platel43 . 
 
 Antillean region, on Croton, Exostema, Forestiera, Pisonia, Randia, 
 etc. The type from Hispaniola. 
 
 Specimens examined: ANTILLES. JAMAICA (Britton, 807, 1895, 1927, 
 3068, 3795, 3905; Britton & Hollick, 1890; Campbell, 6383, 6387, 6398 
 in part, 6581, 6604, 6605, 6676,6714, 6781, 7264, 8138, 9568, 10175; Har- 
 ris, 6552, 10175} . 
 
 30. RUBRAE. 
 
 Leaves small and often spatulate, rather thin, basinerved. Shoots 
 rhombically ancipital or 4-angled. Cataphyls 1 or 2 pairs, on the basal 
 joint only. Flowers several, mostly in 4+2 series. Fruit usually red 
 or orange and very minutely cellular-papillate : sepals not meeting. West 
 Indies and Mexico to northern South America. 
 
 Leaves obovate-spatulate. 
 West Indian. 
 
 Young fruit elongated. P. trinervium. 
 
 Young fruit rounded. P. rubrum. 
 
AEQUATORIALES RUBRAE 103 
 
 Mexican and Central American. 
 Leaves subsessile. 
 
 Northern : cataphyls rather large. P. Guazumae. 
 
 Southern : cataphyls small. P. Rensoni. 
 
 Leaves slenderly subpetioled. P. commutatum. 
 
 South American. 
 
 Leaves obovate : fruit subglobose. P. sanctae-martae. 
 
 Leaves often oblanceolate : fruit ellipsoid. P. Zuloagae. 
 
 Leaves elliptical- or oblong-lanceolate. 
 
 Sepals widely spreading. South American. P. apertum. 
 
 Sepals moderately parted. 
 
 Mexican and Central American. P. commutatum. 
 
 South American (fruit white?). P. Appuni. 
 
 PHORADENDRON TRINERVIUM Grisebach. 
 
 Phoradendron trinervium Grisebach, Fl. Br. W. I. p. 314. 1860. 
 Viscum trinervium Lamarck, Encl. vol. 3. p. 57. 1789. de Candolle, 
 
 Prodromus. vol. 4. p. 280. 1830. 
 
 V. myrtilloides Willdenow, Sp. PI. vol. 4. pt. 2. p. 739. 1806. 
 V. tetragonum de Candolle, Prodromus. vol. 4. p. 282. 1830. 
 V. oblongifolium de Candolle, 1. c. p. 283. 1830. 
 V. trigonum Dietrich, Syn. vol. 1. p. 546. 1839, in part. 
 V. jamaicense Macfadyen, Jam. vol. 2. p. 195. 1850. 
 Phoradendron rubrum var. brevispica Bichler in v. Martius, Fl. Brasil. 
 
 vol. 5. pt. 2. p. 121. 1868. 
 
 P. rubrum var. latifolia Eichler, 1. c. p. 121. 1868. 
 P. oblongifolium Eichler, I. c. p. 134 m. 1868. 
 Phoradendrum trinervium Urban, Bot. Jahrb. vol. 24. p. 37. 1897. 
 
 Somewhat pscudodichotomous, the moderate branches with basal cata- 
 phyls only, androgynous. Internodes rather short (2-3x30-50 mm.), 
 somewhat rhombically quadrangular. Cataphyls a nearly basal pair, 
 frequently followed at a short distance by a second pair, short and rather 
 spreading. Leaves elliptical-obovate, very obtuse, 1 or 1.5-2.5x3-5 cm., 
 cuneately subpetioled for about 3 mm. Spikes more or less clustered, 
 rather short (some 20 mm.), with about 3 slender joints usually some 6- 
 or 8-flowered in 4 or 4+2 series: peduncle 1-3 or 4 mm. long. Fruit 
 red-orange, oblong becoming subglobose, smooth, 3-4 mm. in diameter: 
 sepals erect, parted. Plates 144, 145, 146. 
 
 Through the West Indies. The type from Martinique. 
 
 Specimens examined : BAHAMAS. ACKLIN ISL. (Brace, 4461). GREAT 
 BAGGED ISL. (Wilson, 7814, 7851). WATLING ISL. (Wilson, 7250, 7254, 
 7315). ANTILLES. JAMAICA (McNab, 68, 1846; Harvey, 1829 ;March, 
 1316; Harris & Britton, 10529). PUERTO Rico (Bertero; Heller, 6161; 
 Britton & Cowell, 1293; Britton & S~kafer, 1844; Britton & Marble, 2248; 
 
104 THE GENUS PHORADENDRON 
 
 Stevens & Hess, 4548, 4561; Shafer, 2003; Sintenis, 887c, 3034. 
 3246, 3248; Underwood & Griggs, 554; Read). ST. THOMAS (Herb. 
 Vent.). CARIBBEES. ST. BARTHELEMY (V. Goes). S. EUSTATIUS (Sur- 
 ingar). SABA (Suringar; Boldingh, 1660). ANTIGUA (Wullschlaegel, 
 256,257). MONTSERRAT (Shafer, 314, 320,600, 607). GUADELOUPE (Ber- 
 tero, 1820, as Loranthus sessilis; Perrottet, 1824, the type of V. ob- 
 longifolium ; Duss, 2968). DOMINICA (Imray; Lloyd, 463). MARTIN- 
 IQUE (Isert, 1787, the type of V. trinervium and, as no. 18296 in the 
 Willdenow herbarium, of V. myrtilloides; Herb. Vent.; Duss, 102, 960, 
 1373, 1306). MUSTIQUE (Smith, 34). TRINIDAD (Crueger, 305; Hart, 
 1896). 
 
 Phoradendron Appuni n. sp. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous. Internodes rather short (2-3x15-30 mm.), smooth, some- 
 what rhombically quadrangular. Cataphyls a single pair toward the 
 base, short, white-margined. Leaves narrowly fanceolate, more or less 
 mucronately obtuse to acute, scarcely 1x2.5-5.5 cm., cuneately subses- 
 sile. Spikes mostly solitary, short (15 mm.), with about 3 slender joints 
 some 6- to 8-flowered in 4-J-2 series : peduncle 2 mm. long. Fruit white?, 
 becoming subglobose, smooth, 4 mm. in diameter : sepals erect, parted. 
 Plate 147. 
 
 Cayenne region. The type from Demerara. 
 
 Specimens examined: BRITISH GUIANA (Appun, 1783, the type, in 
 the Hookerian herbarium at Kew). 
 
 Phoradendron apertum n. sp. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes rather short (2-3x25-30 mm.), 
 smooth, acutely quadrangular. Cataphyls a single nearly basal pair, 
 spreading. Leaves oblanceolate-elliptical, very obtuse, 1.5-2x3.5-6.5 cm., 
 euneately subsessile. Spikes more or less clustered, short (scarcely 15 
 mm.), with about 3 short little-swollen joints some 6- or 8-flowered in 
 4-J-2 series: peduncle 1-3 mm. long. Fruit reddish, subglobose, smooth, 
 4-5 mm. in diameter : sepals widely parted. Plate 147. 
 
 Cayenne region. The type from Demerara. 
 
 Specimens examined: BRITISH GUIANA (Jenman, 3801, Apr. 1887, 
 the type). 
 
 Phoradendron Guazumae n. sp. 
 
 Pseudodichotomous or fasciculately branched, the long branches with 
 basal cataphyls only, androgynous?. Internodes rather long (2-4x30-60 
 mm. ) , smooth, rhombically compressed becoming terete but with 4 rather 
 persistent lines. Cataphyls a single nearly basal pair, blunt and spread- 
 
AEQUATORIALES RUBRAE 105 
 
 ing, white-margined. Leaves elliptical-oblanceolate to obovate, very ob- 
 tuse, often mucronate, 1.5-2x4-5.5 cm., cuneately subpetioled for about 
 3 mm. Spikes often clustered, short (10, scarcely lengthening to 20 
 mm.), with 3 or 4 soon cylindrical joints some 6- to 8-flowered in 4+2 
 series: peduncle scarcely 3 mm. long, sometimes followed by a sterile 
 joint. Fruit subglobose, smooth, 3-4 mm. in diameter : sepals somewhat 
 parted. Plate 148. 
 
 Sonoran region of Mexico ( ? exclusively) on Guazuma. The type 
 from Sinaloa. 
 
 Specimens examined: MEXICO. SINALOA, Mazatlan (Rose, Standley 
 it Russell, 13846, Apr. 1, 1910, the type). Culiacan (Brandegee, 1904). 
 
 Phoradendron sanctae-martae n. sp. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes rather short (2-3x25-40 mm.), 
 smooth, rhombically quadrangular. Cataphyls a single basal pair, an- 
 nular, white-margined. Leaves obovate, very obtuse or emarginate, 1x3 
 or 2.5-3x4-5 cm., cuneately sessile. Spikes somewhat clustered, moderate 
 (25-35 mm.) , with about 3 slender oblong joints some 10-flowered in 4+2 
 series: peduncle almost suppressed, often followed by a partly sterile 
 joint. Fruit subglobose, smooth, 3 mm. in diameter: sepals somewhat 
 parted. Plate 149. 
 
 Venezuelan-Isthmian region. The type from Colombia. 
 
 Specimens examined: COLOMBIA. Santa Marta, at 250 ft. altitude 
 (Smith, 1284, the type). 
 
 Phoradendron Rensoni n. sp. 
 
 Pseudodichotomous, the rather long branches with basal cataphyls 
 only, androgynous?. Internodes rather short (2-3x25-40 mm.), smooth, 
 rhombically subancipital. Cataphyls a single pair, nearly basal, not 
 tubular. Leaves obovate-oblanceolate, very obtuse or emarginate, 1.5x 
 3-3.5 cm., cuneately sessile. Spikes clustered, short (10-15 mm.), with 
 about 3 plump joints subverticillately 4- to 6-flowered : peduncle scarcely 
 3 mm. long. Fruit subglobose, smooth, 4 mm. in diameter : sepals some- 
 what parted. Plate 149. 
 
 Isthmian region. The type from San Salvador. 
 
 Specimens examined: EL SALVADOR. San Salvador (Carlos Renson, 
 256, the type). COSTA EICA (Oersted, 1, 3103, P. trinervium, Oliver). 
 
 Phoradendron Zuloagae n. sp. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3 or 5x30-50 or 
 
106 THE GENUS PHORADENDRON 
 
 70 mm.), resinous-dotted, acutely quadrangular, somewhat rhombically 
 compressed above. Cataphyls a nearly basal pair, annular. Leaves ob- 
 lanceolate to obovate-spatulate, mucronately obtuse, 1-1.5x3-5 cm., cu- 
 neately subsessile. Spikes more or less clustered, moderate (15-25 mm.), 
 with about 3 somewhat clavate or fusiform rather short joints some 10- 
 flowered in 4-4-2 series : peduncle 1-2 mm. long. Fruit yellow, ellipsoid, 
 nearly smooth, about 3x4 mm. ; sepals erect, parted. Plates 9, 150. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Caracas (Zuloaga, 1915, the 
 type). 
 
 In the region of P. venezuelense, which it resembles closely but from 
 which it differs in its more spatulate leaves and especially in its ellipsoid 
 fruit with parted sepals. 
 
 Phoradendron commutatum n. sp. 
 
 Phoradendron quadr angular e and P. rubrum of most writers, as to con- 
 tinental North America. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3x30-40 mm.), 
 resinous-dotted, acutely quadrangular. Cataphyls a nearly basal pair, 
 sometimes with a second pair at a distance of about 5 mm. Leaves ob- 
 laiiceolate-oblong or obovate, mucronately obtuse to acute, .5-1x3.5-4 cm., 
 or as much as 2x5 cm., cuneately sessile. Spikes mostly solitary, mod- 
 erate (15, becoming 30 mm.), with 3 or 4 slender somewhat fusiform 
 elongated joints some 6-flowered in 4-J-2 series: peduncle about 4 mm. 
 long, often followed by an elongated sterile joint. Fruit red, globose, 
 microscopically cellular-papillate, 3 mm. in diameter : sepals inflexed but 
 not meeting. Plates 150, 151. 
 
 Mountains of Mexico and Central America. The type from western 
 Mexico. 
 
 Specimens examined: MEXICO. Guadelajara to Tepic (Gregg, 90S, 
 1849, the type). Acaponeta, Tepic (Rose, Standley & Russell, 14450}. 
 Concepcion, Sinaloa (Rose, 1525). San Luis Potosi (Purpus, 5322}. 
 Mirador (Liebmann, 2, 3098-9, P. rubrum Oliver, Vidensk. Meddel. 
 Kjobenhavn. 1864, like the following). Consoquitla (Liebmann, 2, 3100). 
 Orizaba (Mueller, 556, 1001; Salle, 67) . Vera Cruz ( ? Greemman, 120) . 
 Lagunas (Nelson, 2650). Without locality (Sumichrast, 341). HON- 
 DURAS. Puerto Cortez ( t Kellerman, 4720). NICARAGUA. Without local- 
 ity (Wright, 1853-6, on the Ringgold and Rodgers Expedition). 
 
AEQUATORIALES RUBRAE 107 
 
 PHORADENDRON RUBRUM Grisebach. 
 
 Phoradendron rubrum Grisebach, Fl. Br. W. I. p. 314. 1860, as to 
 
 name only. 
 Viscum rubrum Linnaeus, Sp. Plant, p. 1025. 1753. de Candolle, Pro- 
 
 dromus. vol. 4. p. 281. 
 
 P. tetrastachyum spathulifolium Grisebach, Cat. PI. Cub. p. 120. 1866. 
 P. tetrastichus Hitchcock, Kept. Mo. Bot. Gard. vol. 4. p. 125. 1893, 
 
 for tetrastachyum. 
 Phoradendrum spathulifolium Krug & Urban, Bot. Jahrb. vol. 24. p. 41. 
 
 1897. 
 
 At most somewhat pseudodichotomous, the rather long branches with 
 basal cataphyls only, androgynous. Internodes short (2-3x20 mm.), 
 smooth, rhombically ancipital and somewhat dilated upwards. Cataphyls 
 a nearly basal pair, frequently followed by 1 or 2 others at short inter- 
 vals, blunt and spreading. Leaves somewhat rhombically lance-spatulate 
 to obovate, obtuse, 1-1.5x4 cm., cuneately tapered and subpetioled for 
 5 mm. Spikes more or less clustered, short (scarcely 20 mm.), with 2 
 or 3 oblong joints about 12-flowered in 4+2 series: peduncle 2-3 mm. 
 long. Fruit red or exceptionally yellow, subglobose, smooth, 4 mm. in 
 diameter : sepals more or less erect and parted. Plates 152, 153. 
 
 Antillean and Bahamian regions. The type from the Bahamas. 
 
 Specimens examined: BAHAMAS. Without locality (Catesby, in the 
 herbarium of the South Kensington Museum, the prototype of V. ru- 
 brum). ABACO (Coker,558). FORTUNE ISL. (Eggers, 3847). CROOKED 
 ISL. (Hitchcock, 1890; Brace, 4643). LONG ISL. (Britton & Millspaugh, 
 6325). CAT ISL. (Britton & Millspaugh, 5867). MARIGUANA (Wilson, 
 7449, 7457, 7532, 7579). NEW PROVIDENCE (Brace, 3428; Britton & Brace, 
 832; Coker, 303). ACKLIN ISL. (Brace, 4461) . WATLING 's ISL. (Wilson, 
 7254). INAGUA (Nash & Taylor, 947, 1021, 1314 and 1342 with yellow 
 fruit). ANTILLES. CUBA (Wright, 512, 1200b, 13001, the type of P. 
 tetrastachyum spathulifolium and of P. spathulifolium; Combs, 347, 348; 
 Shafer,296,371). 
 
 Linnaeus apparently based Viscum rubrum on the description and 
 illustration of the plant figured on pi. 81 of Catesby 's celebrated work 
 on the Bahamas, the time character of which is evident from the accom- 
 panying photographic illustration of one of the several specimens of 
 Catesby 's collection preserved at South Kensington. Grisebach, who in- 
 tended to transfer into Phoradendron the species which Linnaeus had 
 called Viscum rubrum, and who therefore stands as the author of the 
 name as here used, really applied it to the plant here called P. antillarum, 
 and he subsequently rechristened the true rubrum P. tetrastachyum spa- 
 thulifolium. 
 
108 
 
 THE GENUS PHOEADENDRON 
 
 31. QUADRANGULAKES. 
 
 Leaves rather small, prevailingly elongated, thin, basinerved. Shoots 
 for a time sharply 4-sided or 4-lined. Cataphyls usually a single pair, 
 on the basal joint only. Flowers several, usually in 4 or 4+2 series. 
 Fruit mostly red or orange and minutely cellular-papillate : sepals closely 
 inflexed and meeting. Central and South America and the West Indies. 
 
 Fruit white : leaves elliptical-oblong to obovate. Andean. 
 
 Leaves cuneately subsessile. 
 Leaves abruptly petioled. 
 Fruit red or orange. 
 Brazilian. 
 
 Leaves subsessile. 
 
 Young fruit elongated. 
 Young fruit rounded. 
 
 Leaves oblanceolate-sp"atulate. 
 Leaves obovate-spatulate. 
 Leaves slenderly subpetioled. 
 Elliptical-obovate. 
 Linear-oblanceolate. 
 Venezuelan. 
 Central American. 
 
 Leaves lance-oblong. 
 Leaves elliptical-obovate. 
 Mexican. 
 
 Leaves elliptical-obovate. 
 
 Spikes stalked. Continental. 
 Spikes subsessile. Yucatecan. 
 Leaves oblanceolate-oblong. Insular. 
 West Indian. 
 
 Leaves lanceolate or oblanceolate-obovate. 
 Leaves linear-oblanceolate. 
 
 P. quadrangulare. 
 P. viscifolium. 
 
 P. Wiesnerianum. 
 
 P. affine. 
 P. Martianum. 
 
 P. piauhyanum. 
 
 P. microphyllum. 
 
 P. venezuelense . 
 
 P. ceibanum. 
 P. zacapanum. 
 
 P. tamaulipense. 
 
 P. Gaumeri. 
 
 P. Townsendi. 
 
 P. antillarum. 
 P. gracile. 
 
 PHORADENDRON QUADRANGULARE (Krug & Urban). 
 
 Phoradendrum quadrangulare Krug & Urban, Bot. Jahrb. vol. 24. p. 35. 
 
 1898. 
 Loranthus quadrangularis Humboldt, Bonpland & Kunth, Nov. Gen. Sp. 
 
 vol. 3. p. 444. 1818. 
 
 Viscum quadrangulare de Candolle, Prodromus. vol. 4. p. 283. 1830. 
 Viscum salicifolium Presl, Epimel. Bot. p. 254. 1849. 
 Phoradendron salicifolium Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 110. 1868. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3x30-50 mm.), 
 resinous-dotted or somewhat cellular-papillate, rhombically quadrangn- 
 
AEQUATORIALES QUADRANGULAEES 109 
 
 lar or 4-winged. Cataphyls a single pair toward the base, spreading. 
 Leaves narrowly obovate to elliptical-oblong, more or less mucronately 
 very obtuse, 1-1.5x3.5-5 or 6 cm., cuneately subpetioled for scarcely 3 mm. 
 Spikes more or less clustered, moderate (30-40 mm.), with 3-5 slender 
 elongated joints rather turbinately some 12- to even 26-flowered in 4 or 
 4+2 series : peduncle 2-3 or rarely 5 mm. long, sometimes followed by a 
 sterile joint. Fruit white, subglobose, cellular-papillate, 3 mm. in diam- 
 eter: sepals closely inflexed. Plates 154, 155. 
 
 Andean region. The type from Colombia. 
 
 Specimens examined: COLOMBIA, (Bonpland, 1795 on Guazuma, 
 the type of L. quadrang ularis ). Without locality (Holton, 656). ECUA- 
 DOR. Quito (Haenke, the type of V. salicifoUum). Guayaz (Sodiro, Aug. 
 23,1872). Bodega (Sodiro, Sept. 3, 1872). Hacienda El Recreo, Man- 
 abi (Eggers, 14829). 
 
 As in the case of P. rubrum, the authors of the binomial here used 
 had in mind a different species from the one to which it is now applied, 
 but their intention to transfer Loranthus quadrangularis HBK. into 
 PJioradendron is unmistakable. The Colombian type differs from the 
 PJcuadoran salicifoUum in having more rhombic internodes. 
 
 PHORADENDRON VISCIFOLIUM n. comb. 
 
 LorantJius viscifolius Humboldt, Bonpland & Kunth, Nov. Gen. Sp. vol. 
 
 3. p. 443. 1818. 
 Viscum Kunthianum de Candolle, Prodromus. vol. 4. p. 283. 1830. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes rather short (2-3x30-50 mm.), 
 nearly smooth, acutely quadrangular. Cataphyls a single nearly basal 
 pair. Leaves obliquely obovate, obtuse, 1.5-2x3.5-5 cm., rather abruptly 
 subpetioled for over 5 mm. Spikes more or less clustered, moderate 
 (30 mm.), with about 3 slender elongated joints some 8-flowered in 4 or 
 4+2 series : peduncle about 2 mm. long. Fruit subglobose, smooth, 3 mm. 
 in diameter : sepals closely inflexed. Plate 155. 
 
 Andean region. The type from Ecuador. 
 
 Specimens examined: ECUADOR. Guayaquil (Bonpland, 3798, the 
 type). 
 
 Phoradendron Wiesnerianum n. sp. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3x30-50 mm.), 
 smooth, rhombically quadrangular or 4-winged. Cataphyls a single pair 
 toward the base, blunt and spreading. Leaves subspatulately elliptical, 
 mucronately very obtuse, 1-1.5x4-5 cm., cuneately subsessile. Spikes 
 
110 THE GENUS PHOEADENDEON 
 
 mostly clustered, short (10, becoming 20 mm.), with 2 or 3 slender elon- 
 gated joints some 12-flowered in 4+2 series: peduncle 1-3 mm. long, 
 often followed by a partly sterile joint. Fruit ovoid, cellular-papillate, 
 3x4 mm. : sepals closely inflexed. Plate 156. 
 
 Brazilian region. The type from Ceara. 
 
 Specimens examined: BRAZIL. Ceara (Gardner, 1673, 1674 the 
 type). 
 
 Phoradendron piauhyanum n. nom. 
 
 Phoradendron rubrum var. longispica Eichler in v. Martins, Fl. Brasil. 
 vol. 5. pt. 2. p. 121. 1868. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3x30-50 mm.), 
 smooth, more or less rhombically quadrangular. Cataphyls a nearly basal 
 pair, sometimes followed by a second pair some 5 mm. higher. Leaves 
 elliptical-spatulate, very obtuse or subemarginate, 1.5-2x4-6 or 8 cm., 
 cuneately subpetioled for scarcely 5 mm. Spikes mostly clustered, long 
 for the group (25, becoming 40-50 or 60 mm.), with 3-6 slender elongated 
 joints turbinately some 20-flowered in 4-(-2 series : peduncle almost sup- 
 pressed, sometimes followed by an elongated sterile joint. Fruit round- 
 ovoid, smooth, 3 mm. in diameter ; sepals closely inflexed. Plate 157. 
 
 Brazilian region. The type from Piauhy. 
 
 Specimens examined: BRAZIL. Piauhy (Gardner, 2617, the type 
 of P. rubrum var. longispica, 2623). Panuri (Spruce, 2909}. Santarem 
 (Spruce, 4, 739). 
 
 Phoradendron ceibanum n. sp. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous?. Internodes rather short (2-4x30 mm.), 
 smooth, rhombieally 4-angled, somewhat dilated and ancipital upwards. 
 Cataphyls a single nearly basal pair. Leaves oblong-elliptical, mucro- 
 nately subacute to obtuse, 1.5-2 or 2.5x4-7 cm., petioled for about 5 mm. 
 Spikes mostly solitary, moderate (40-50 mm. in fruit), with about 3 
 rather slender oblong joints some 20-flowered in 4 or 4+2 series : pedun- 
 cle 2-3 mm. long. Fruit subglobose, minutely cellular-papillate, 4 mm. 
 in diameter : sepals closely inflexed. Plate 158. 
 
 Isthmian region. The type from Costa Eica. 
 
 Specimens examined: COSTA RICA. Rio Ceiba, Buenos Aires (Pit- 
 tier [or Tonduzf] 3900, 1891, the type, 6638). Ojo de Agua (Hoff- 
 mann, 578,1856). NICARAGUA. Mosquito Coast (WullscMaegel) . Gren- 
 ada (Levy, 1293). Realejo (Baker, 2096). 
 
AEQUATORIALES QUADBANGULARES 111 
 
 Phoradendron venezuelense n. sp. 
 
 Somewhat pseudodichotomous, the moderate branches with basal cata- 
 phyls only, androgynous. Internodes rather short (2-3x20-30 mm. or 
 5x60 mm.), smooth, rhombically 4-angled, somewhat compressed. Cata- 
 phyls a single nearly basal pair, annular-parted. Leaves oblong-lance- 
 olate, mucronately obtuse to subacute, .3-1x3-4 cm., cuneately subpetioled 
 for about 3 mm. Spikes often clustered, short (15 mm.), with about 3 
 slender short joints some 12- to 18-flowered in 4+2 series: peduncle 
 nearly suppressed. Fruit greenish yellow to red, subglobose, smooth, 
 3 mm. in diameter : sepals closely inflexed. Plate 159. 
 
 Venezuelan and Isthmian regions. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1810, the type, 
 fill?). Valencia (Moritz, 307). Oritrico (Otto, 556). Caracas (Goll- 
 mer, 1854 ; Knoop, Hi) . COLOMBIA. Sta. Marta ( fSmith, 1280) . PAN- 
 AMA. Aspinwall (Hayes, 829). Paraiso (?Hayes,323). Chagres (fFcnd- 
 Ur, 1341). Gamboa (Pittier, 2604). CARIBBEES. TRINIDAD (Fendler, 
 651; Hart, 6116). 
 
 Phoradendron antillarum n. sp. 
 
 Phoradendron rubrum and P. quadrangulare of most writers, as to the 
 
 West Indies except the Bahamas and some few Cuban collections. 
 Viscum angustifolium Bertero in Sprengel, Syst. vol. 1. p. 487. 1825. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3x15-40 or 50 
 mm.), somewhat cellular-papillate, acutely quadrangular, somewhat 
 rhombically dilated above. Cataphyls a single nearly basal pair, annular, 
 white-margined. Leaves lanceolate, mucronately subacute, typically nar- 
 row .5-1x3-4 cm., cuneately subsessile. Spikes more or less clustered, 
 rather short (15-20, lengthening to 30 mm.), with about 3 slender sub- 
 fusiform joints about 14-flowered in 4+2 series : peduncle about 1 mm. 
 long. Fruit red varying into yellow or white, subglobose, smooth, 3-4 mm. 
 in diameter : sepals closely inflexed. Plate 160. 
 
 Antillean and upper Caribbean regions. The type from Cuba. 
 
 Specimens examined: ANTILLES. CUBA (Wright, 452, 1302, the 
 type; Poeppig, 1824; Pareyss, 1839; Herb. Le Jolis., 871; de la Sagra; 
 Eggers, 4782; Combs, 299; Van Hermann, 1448; Shafer, 159, 296, 363, 
 371, 563, 815, 1109, 1622, 11823 noted, as having white fruit, 11828 
 with yellow fruit, 12109, 12403; Pringle, 80; Baker, 2559; Wilson, 1748; 
 Rugel, 269b; Britton, 165, 1950, 1985, 2052, 2119; Britton, Britton & 
 Cowell, 10241; Britton & Cowell, 12553; Britton & Wilson, 4886, 5644; 
 Britton, Earle & Wilson, 4585, 4687; Britton, Britton & Wilson 5579). 
 HAITI (Prax, 1854; Ehrenberg, 13; Eggers, 3328; Picarda, 72, 132b, 301, 
 
112 THE GENUS PHOEADENDEON 
 
 448; Nash & Taylor, 1322). SANTO DOMINGO (Bertero; Ehrenberg; 
 Wright, Parry & Brummcl, 467; Eggers. 1651, 1983; Fuertes, 383, 827; 
 t. Tuerckheim, 2616; Taylor, 223, 338, 481, 497; Emanuel, 1). JAMAICA 
 (Hitchcock, 1890; Hansen, 1310; Britton, 2840, 3668; Shafer, 159, 296, 
 363, 563, 815, 1109, 1622; Harris, 6577, 6584, 6927 bearing Cuscuta; 
 Brown, 394; Maxon, 1675). PUERTO Rico (Bertero, 8, 1234 the type 
 collection of Viscum angustifolium Bertero; Eggers, 965; Cowell, 753; 
 Stahl, 45, 1043; Heller, 205, 6186; Sintenis, 885, 887b, 3035, 3292b, 3912, 
 5562, 6624, 7601; Garber, 24; Krug, 538; Schwancke; Kuntze, 495; Un- 
 derwood & Griggs, 211; Britton & Marble, 2245 with yellow fruit; Brit- 
 ton & Shafer, 1644; Stevens, 5212, 5825b, 5826-9, 5907, 5908, 5935; Stev- 
 ens & Hess, 4563, 4988; Hess, 5402; Brother Hioram, 1912) . CARIBBEES. 
 ANTIGUA (Nicholson, 16). GUADELOUPE (Sprengel). DOMINICA (Eggers, 
 93). ^ 
 
 With stouter (2-4x30-60 mm.), smooth, acutely quadrangular, but lit- 
 tle dilated internodes, and larger elliptical-lanceolate leaves 1-2x5-9 cm., 
 mostly 5-nerved and somewhat veiny, and spike-joints about 18 r flowered, 
 it is var. orientalis (PI. 161). Eastern Cuba (Britton, 1985, 2119 the 
 type; Britton, Con-ell cf- Shafer. 12919, and, in an equally long- but 
 rather narrower-leaved form, f. longa, PI. 161, Britton, 2415). Puerto 
 Rico (Underwood & Griggs, 383). 
 
 Phoradendron Townsendi n. sp. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous?. Internodes rather short (2-3x15-35 mm.), 
 cellular-papillate, somewhat rhombically quadrangular. Cataphyls a sin- 
 gle nearly basal pair, annular-bifid, white-margined. Leaves oblance- 
 olate-oblong or subspatulate, mucronate but very obtuse, 1-2x4-6 cm., 
 cuneately narrowed rather than petioled. Spikes more or less clustered, 
 short (10 mm.), with about 3 short joints scarcely 6-flowered in 2, 4 or 
 4-f-2 series: peduncle scarcely 1 mm. long. Fruit?. Plate 162. 
 
 Western insular region of Mexico. The type from Socorro. 
 
 Specimens examined: MEXICO. Socorro, Revillagigedo Islands (An- 
 thony, 1897 ; Townsend, Mar. 1899 ; Barkelew, 177, 1903, the type). 
 
 Phoradendron gracile n. comb. 
 
 Phoradendrum quadrangulare gracile Krug & Urban, Bot. Jahrb. vol. 24. 
 p. 37. 1897. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous. Internodes rather short (1-2x25-30 mm.), smooth, acutely 
 quadrangular. Cataphyls a single pair, nearly basal, annular-bifid, white- 
 
AEQUATORIALES QUADRANGULAKES 113 
 
 margined. Leaves subspatulately oblanceolate-oblong, subacute to very 
 obtuse or slightly emarginate, .5-1x3-5 cm., attenuately subsessile. Spikes 
 mostly solitary, short (10, lengthening to 20 mm.), with about 3 short 
 slender but somewhat fusiform joints about 10-flowered in 4-f2 series: 
 peduncle 1-2 mm. long. Fruit subellipsoid, sparingly but evidently low- 
 warty, 3 mm. in diameter : sepals inflexed and closely meeting or slightly 
 parted. Plate 163. 
 
 Antillean region. The type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA (Harris, 6392, 1896, tak- 
 en as the type, 6384, 6400, 6544, 6585, 6661; Hansen, 1897; Campbell, 
 6384, 6400, 1896 ; Britton, 2991, 3283, 3668) . 
 
 A Jamaican specimen (Ball, 1882), with staminate spikes 30-35 mm. 
 long, their half-dozen joints somewhat turbinately about 20-flowered, 
 may be known as var. Ballii. Plate 163. 
 
 Phoradendron microphyllum n. comb. 
 
 Viscum microphyllum Pohl in de Candolle, Prodromus. vol. 4. p. 283. 
 
 1830. 
 Phoradendron rubrum var. microphylla Eichler in v. Martius, Fl. Brasil. 
 
 vol. 5. pt. 2. p. 120. 1868. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous ?. Internodes rather short ( 1-2x20-40 mm. ) , 
 smooth, rather rhombically 4-sided becoming terete. Cataphyls a single 
 pair, nearly basal or as much as 5 mm. above the base, short and spread- 
 ing. Leaves oblanceolate-spatulate, mucronately rather obtuse, .3-.7x 
 2.5-4 cm., slenderly attenuate at base. Spikes solitary, short (scarcely 10, 
 lengthening to 30 mm.), with about 3 slender joints scarcely 10-flowered 
 in 4-J-2 series: peduncle 2-5 mm. long. Fruit rather ellipsoid, smooth. 
 3x4 mm. : sepals closely inflexed. Plate 164. 
 
 Brazilian region. The type from Tingua. 
 
 Specimens examined: BRAZIL. Tingua (Pohl, 245, 4583 the type 
 of V. microphyllum). Rio de Janeiro (Glaziou, 2598, 8728). Alagoas 
 (Gardner, 1324, 1325, from which the fruit is described). 
 
 PHORADENDRON AFFINE Nuttall. 
 
 Phoradendron affine Nuttall, Journ. Philad. Acad. n. s. vol. 1. p. 185. 
 
 1847. 
 Viscum affine Pohl in de Candolle, Prodromus. vol. 4. p. 281. 1830. 
 
 Somewhat pseudodichotomous, the moderate branches with basal cata- 
 phyls only, androgynous?. Internodes moderate (2x30-50 mm.), smooth, 
 acutely quadrangular above. Cataphyls a single pair toward the base, 
 
114 THE GENUS PHOEADENDEON 
 
 blunt and spreading, white-margined. Leaves oblanceolate-spatulate, 
 very obtuse, .5-1x2-4 cm., cuneately subsessile. Spikes more or less clus- 
 tered, moderate (20-30 mm.), with about 3 elongated slender joints 6- 
 to 10-flowered in 4-f 2 series : peduncle 5 mm. long. Fruit orange-red, 
 globose, smooth, 4 mm. in diameter : sepals closely inflexed. Plate 165. 
 
 Brazilian region. The type from S. Joao Baptista. 
 
 Specimens examined: BRAZIL. S. Joao Baptista (PoJil, 544, 1828, 
 the type of V. affine). Minas Geraes (v. Martins}. Lagoa Santa (Warm- 
 ing}. Ilha Marajo, Para (Huber, 469}. Mattogrosso (Kunize; Moore, 
 954). Barrhina, Bahia (Rose & Russell, 19799}. 
 
 Phoradendron Martianum n. sp. 
 
 Phoradendron rubrum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 120, as to the plant depicted on pl^38. f . 2. 1868. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-5x20-50 mm.), 
 smooth, acutely quadrangular. Cataphyls a single pair toward the base, 
 blunt, white-margined. Leaves shortly elliptical or somewhat obovate, 
 very obtuse, 1.5-2x3.5-4 cm., cuneately subsessile. Spikes mostly solitary, 
 moderate (15, becoming 35 mm.), with about 3 oblong joints some 10- to 
 18-flowered in 4+2 series: peduncle 3-5 mm. long. Fruit red, subglo- 
 bose, essentially smooth, 3 mm. in diameter: sepals closely inflexed. 
 Plate 166. 
 
 Brazilian region. The type from Alagoas. 
 
 Specimens examined: BRAZIL. Alagoas (Gardner, 1321 the type, 
 1323}. Piauhy (Gardner, 2 619}. Ceara (Gardner, 1673, 1674}. Rio de 
 Janeiro (Gaudichaud, 567, 1833; Glaziou, 259S, 8728, 14887 in part; 
 ScJienck, 3902}. Without locality (f Gardner, 1028; Guillemin, 185; 
 Weddell, 1594,1858). 
 
 Phoradendron Gaumeri n. sp. 
 
 Pseudodichotomous, the rather long branches with basal cataphyls 
 only, androgynous?. Internodes moderate (2-3x20-50 mm.), smooth, 
 acutely quadrangular. Cataphyls a single nearly basal pair, blunt, white- 
 margined. Leaves subelliptical-obovate, more or less mucronately obtuse, 
 about 1x2.5-3 cm., cuneately subsessile. Spikes mostly clustered, mod- 
 erate (20-30 or even 40 mm.), with about 3 elongated joints some 12- to 
 18-flowered in mostly 4-J-2 series: peduncle 1-2 mm. long. Fruit?. 
 Plate 167. 
 
 Yucatecan region. The type from Yucatan. 
 
 Specimens examined: MEXICO. Izamal, Yucatan (Gaumer, 561, 1895, 
 in part, the type) . 
 
AEQUATOBIALES QUADBANGULABES 115 
 
 Phoradendron tamaulipense n. sp. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous?. Internodes moderate (2-5x30-50 mm.), 
 smooth, acutely quadrangular, somewhat ancipitally compressed above. 
 Cataphyls a single basal pair, annular. Leaves elliptical-obovate, more 
 or less mucronately obtuse, 1-2x3.5-5 cm., cuneately subsessile. Spikes 
 mostly solitary, at length rather long (15-20, becoming 50 mm.), with 3-5 
 elongated joints some 6- to 12-flowered in 4 or 4+2 series : peduncle 3-10 
 mm. long, when short usually followed by a partly florif erous joint. Fruit 
 red, globose, smooth, 4 mm. in diameter: sepals closely inflexed. Plate 
 167. 
 
 Eastern Sierra Madre and Cordillera of Mexico. The type from 
 Alvarado. 
 
 Specimens examined: MEXICO. Victoria (Palmer, 21, 1907). Tam- 
 pico (Palmer, 81, 221). Alvarado (Seler, 422, 4484 the type). Orizaba 
 (Mueller, 1570). Zacuapam (Purpus, 6280). Fortin (Kerber, 1990). 
 Without locality (?. Karwinski, 1844). Caxamatle (Wawra, 567). Jaya- 
 catlan, Oaxaca ( ? Smith, 360). 
 
 Phoradendron zacapanum. n. sp. 
 
 More or less pseudodichotomous or verticillately branched, the rather 
 long branches with basal cataphyls only, androgynous ?. Internodes mod- 
 erate (3x30-60 mm.), acutely 4-angled. Cataphyls a single basal pair, 
 annular, white-margined. Leaves obovate to oblanceolate-oblong, very 
 obtuse or somewhat emarginate, 2-3.5x5-7.5 cm., cuneately subsessile. 
 Spikes mostly solitary, moderate (20-30 or 40 mm.), with about 4 elon- 
 gated rather fusiform joints some 10- to 18-flowered in 4+2 series: 
 peduncle 3-5 mm. long. Fruit (immature) subglobose, smooth: sepals 
 closely inflexed. Plate 168. 
 
 Guatemalan region. The type from Gualan. 
 
 Specimens examined: GUATEMALA. Gualan, Zacapa (Kellerman, 
 5604, Dec. 30, 1906, 5612 the type, 5728, 5972). Without locality 
 ( ? FriedrichstJial, 1625). 
 
 32. E MARGIN AT AE. 
 
 Leaves broad or small, usually rather papery, basinerved, but mostly 
 with prominent midrib beneath. Shoots ancipital or acutely quadrate, 
 mostly papillate. Cataphyls a single pair, on the basal joint only. Flow- 
 ers in 2, 4 or 4+2 series. Fruit warty, the sepals usually parted. South 
 America: one species in Yucatan and one in the West Indies. 
 
116 THE GENUS PHORADENDKON 
 
 Spikes 3- or more jointed : leaves mostly drying papery. 
 
 Shoots 4- winged: fruit large (4 mm.). P. Lyoni. 
 
 Shoots rhombically ancipital or 4-lined. 
 Leaves obovate. 
 
 Rather large (fully 2x3 cm.), and firm, emarginate. 
 
 P. emarginatum. 
 Smaller (scarcely 1.5x2.5 cm.). 
 
 Blunt or emarginate. P. minor. 
 
 Often mucronate. 
 
 Shoots little dilated. 
 
 Leaves very small (under 1 cm.). 
 
 P. obovatifolium. 
 Leaves larger. 
 
 Suborbicular. P. mucronatum. 
 
 Cuneate-obovate. P. yucatanum. 
 
 Shoots much flattened. P. Ottonis. 
 
 Leaves oblanceolate-obovate. P. Degenianum. 
 
 Spikes 1- or 2-jointed. 
 
 Leaves long-cuneate. P. cuneifolium. 
 
 Leaves obovate or elliptical. 
 
 Rather papery: shoots slender. P. cearense. 
 
 Rather fleshy : shoots stout. P. caracasanum. 
 
 Phoradendron Lyoni n. sp. 
 
 Divaricately pseudodichotomous, the long stout branches with basal 
 cataphyls only, androgynous?. Internodes moderate (3-4x20-50 mm.), 
 papillately roughened, acutely quadrangular or winged. Cataphyls a 
 single pair, nearly basal, bifid. Leaves elliptical-obovate, very obtuse to 
 subacute or mucronate, 1.5-2.5x3-5 cm., cuneately wide-based for about 
 5 mm. Spikes mostly solitary, short (in fruit 15-20 mm.), with about 
 4 short 2- to 4-flowered joints: peduncle suppressed: scales ovate, cili- 
 olate. Fruit red, globose, 4 mm. in diameter, verrucose : sepals suberect. 
 Plate 169. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. San Julian (M. W. Lyon, Jr., 
 July 18, 1900, the type in the U. S. National 'Herbarium : Robinson & 
 Lyon, July 18, 1900). Las Trincheras (Warming, 1891-2). 
 
 PHORADENDRON EMARGINATUM Eichler. 
 
 Plioradendron emarginatum Eichler in v. Martius, PI. Brasil. vol. 5. 
 pt. 2. p. 118. pi. 38. 1868. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-3x30-50 mm.). 
 papillately roughened, acutely 4-angled. Cataphyls a single nearly basal 
 
AEQUATORIALES EMARGINATAE 117 
 
 pair or a second pair exceptionally present, bifid. Leaves obovate, more 
 or less mucronately emarginate, 2-3x3-5 cm., cuneately subpetioled for 
 about 5 mm. Spikes mostly clustered, moderate, (30 mm. in fruit), with 
 4 or 5 joints 4- or 6-flowered in 4 or 4+2 series : peduncle scarcely 2 mm. 
 long: scales ciliate. Fruit ovoid, 3x4 mm., verrucose: sepals suberect. 
 Plate 170. 
 
 Brazilian region. The type from Minas Geraes. 
 
 Specimens examined: BRAZIL. Minas Geraes (Claussen, 252, 1839, 
 taken as type). Piauhy (v. Martins). Without locality (Claussen, 
 113). Rio de Janeiro ( Glaziou, 9861, 14887) . Ceara ( Gardner, 1670-1 ) . 
 Joazeiro, Bahia (Rose & Russell, 19751). BOLIVIA. Velasco (Kuntze, 
 19) . Sierra de Sta. Cruz (Kuntze, 18) . 
 
 Phoradendron minor n. comb. 
 
 Phoradendron emarginatum minor Eichler in v. Martius, Fl. Brasil. vol. 
 5. pt. 2. p. 119. 1868. 
 
 More or less pseudodichotomous, the short branches with basal cata- 
 phyls only, androgynous?. Internodes short (2x10-25 mm.), nearly 
 smooth, slightly 4-winged. Cataphyls a single pair, basal, deeply notched. 
 Leaves ovate or suborbicular, mucronately very obtuse or mostly emar- 
 ginate, 1-1.5x1.5-2.5 cm., rather abruptly subpetioled for 2 mm. Spikes 
 short, with about 4 subglobose joints subverticillately about 4-flowered: 
 peduncle very short : scales ciliolate. Fruit ?. Plate 172. 
 
 Brazilian region. The type from Piauhy. 
 
 Specimens examined: BRAZIL. Piauhy (v. Martius, the type of 
 P. emarginatum minor). 
 
 PHORADENDRON OBOVATIFOLJUM Morong. 
 
 Phoradendron obovatifolium Morong, Ann. N. Y. Acad. Sci. vol. 7. p. 216. 
 1892. 
 
 Pseudodichotomous, the rather short and slender branches with basal 
 cataphyls only, androgynous. Internodes short (1-2x10-20 mm.), nearly 
 smooth, acutely 4-angled, slightly flattened upwards. Cataphyls a single 
 pair, nearly basal, notched. Leaves obovate, mucronately very obtuse or 
 emarginate, .5-2x1-2.5 cm., rather abruptly subpetioled for 3 mm. Spikes 
 solitary, short (8-15 mm.), with about 4 slender joints subverticillately 
 4- to 6-flowered above the middle : peduncle 1 mm. long : scales ciliolate. 
 Fruit ovoid, 2 mm. long, verrucose: sepals suberect. Plate 171. 
 
 Brazilian region ( ? exclusively) on Piptadenia. The type from Para- 
 guay. 
 
 Specimens examined: PARAGUAY. Gran Chaco, opposite Asuncion 
 (Morong, 1582, the type). Rio Pilcomayo (Hassler, 298). Rio Apa to 
 Rio Aquidaban (Fiebrig, 32, 4981). 
 
118 THE GENUS PHOEADENDEON 
 
 PHORADENDRON MUCRONATUM (Krug & Urban). 
 
 PJwradendrum mucronatum Krug & Urban, Bot. Jahrb. vol. 24. p. 34. 
 
 1897. 
 Viscum mucronatum de Candolle, Prodromus. vol. 4. p. 282. 1830. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes short (2x10-20 mm.), papil- 
 lately roughened, acutely 4-angled, slightly flattened upwards. Cata- 
 phyls a single pair, nearly basal, notched. Leaves suborbicular or ob- 
 ovate, more or less mucronately very obtuse or emarginate, 1-2x1.5-3 cm., 
 rather abruptly petioled for 1-2 mm. Spikes more or less clustered, short 
 (5-10 mm.), with about 3 short 4- to 6-flowered joints: peduncle very 
 short : scales ciliolate. Fruit round-ovoid, 3-4 mm. long, verrucose : sepals 
 erect. Plate 172. 
 
 Antillean and Caribbean regions^on Croton, Psidium, etc. The type 
 from Santo Domingo. 
 
 Specimens examined: ANTILLES. SANTO DOMINGO (Bertero, the 
 type of V. mucronatum; Varamel, 1851 ; Fuertes, 240, 1175, 1393}. HAITI 
 (Buck, 319; Nash, 98}. JAMAICA (I Pur die, with sessile ovate obtuse 
 leaves 4x6 cm.). CARIBBEES. GUADELOUPE (Duss, 4156}. MARTINIQUE 
 (Duss, 100; Hahn, 296, 1383, 1385}. 
 
 Phoradendron yucatanum n. sp. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous?. Internodes short (2x10-30 mm.), somewhat velvety-papil- 
 late, ancipital or somewhat quadrately angled, slightly widened upwards. 
 Cataphyls a single pair, nearly basal, bifid. Leaves cuneately obovate to 
 suborbicular, mucronately very obtuse to emarginate, 1-1.5x1.5-2.5 cm., 
 scarcely petioled. Spikes solitary, short, (5-10 mm.), with about 3 sub- 
 globose verticillately 4-flowered joints : peduncle 1 mm. long : scales cili- 
 olate. Fruit (immature) subglobose, scarcely 2 mm. in diameter, ver- 
 rucose : sepals erect. Plate 173. 
 
 Yucatecan region. The type from Yucatan. 
 
 Specimens examined: MEXICO. Yucatan, without other data (Gau- 
 mer, 561 in part, 1895, the type, in the herbarium of the Field Mu- 
 seum). 
 
 PHORADENDRON OTTONIS Eichler. 
 
 Plioradendron Ottonis Eichler in v. Martius, Fl. Brasil. v. 5. pt. 2. p. 119. 
 1868. 
 
 Pseudodichotomous, the moderate branches with basal cataphyls only, 
 androgynous?. Internodes short (2x15-25 mm.), nearly smooth, little 
 quadrate, ancipitally dilated to a width of 5-7 mm. below the nodes. 
 
AEQUATORIALES EMABGINATAE 119 
 
 Cataphyls a single pair, basal, tubular-bifid. Leaves round-obovate, mu- 
 cronately obtuse to subacute, l-l.5xl.5-2 cm., euneately subpetioled for 
 1-2 mm. Spikes solitary, short (10-15 mm.), with about 3 short 4-flow- 
 ered joints: peduncle 1-2 mm. long: scales scarcely ciliate. Fruit (im- 
 mature) subglobose, 2 mm. in diameter, verrucose : sepals nearly or quite 
 meeting. Plate 173. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Orituco (Otto, 565, Feb. 22, 1840, 
 the type). Cumana (Funcko, 295; Herb. Le Jolis., 1870). Locality? 
 (Eggers, 13335). 
 
 Phoradendron Degenianum n. sp. 
 
 More or less pseudodichotomous or verticillate, the moderate branches 
 with basal cataphyls only, androgynous?. Internodes rather short (2x 
 20-40 mm.), papillately roughened, acutely quadrangular, somewhat com- 
 pressed upwards. Cataphyls a single pair, nearly basal, deeply notched. 
 Leaves oblanceolate-obovate, mucronately subacute to very obtuse or 
 emarginate, 1.5-2x3-4.5 cm., euneately slender-petioled for 5-10 mm. 
 Spikes solitary, short (10, lengthening to 15 or 20 mm.), with 3-5 rather 
 slender joints clavately some 4-flowered about the middle : peduncle 1-2 
 mm. long: scales ciliolate. Fruit subglobose, 3 mm. in diameter, verru- 
 cose : sepals ascending, scarcely meeting. Plate 174. 
 
 Venezuelan-Isthmian region. The type from Colombia. 
 
 Specimens examined: COLOMBIA. Sta. Marta (H. H. Smith, 1282, 
 1285 the type) . 
 
 PHORADENDRON CUNEIFOLIUM (Urban). 
 
 Phoradendrum cuneifolium Urban, Bot. Jahrb. v. 23. Beibl. 57. p. 5. 1897. 
 
 More or less pseudodichotomous, the slender branches with basal cata- 
 phyls only, androgynous. Internodes short (1-2x10-20 mm.), papillately 
 roughened, rhombically quadrangular. Cataphyls a single pair, nearly 
 basal, bifid. Leaves inversely triangular, more or less mucronately very 
 obtuse to truncate or emarginate, 1-1.5x2-4 cm., gradually cuneate to the 
 slender base rather than petioled. Spikes mostly solitary, very short 
 (scarcely 5 mm.), with a single fertile 6-flowered joint: peduncle almost 
 suppressed. Fruit subglobose, 3-4 mm. in diameter, sparingly low-verru- 
 cose : sepals erect. Plate 174. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined : VENEZUELA. Tovar (Fendler, 1115, the 
 type). 
 
 PHORADENDRON CEARENSE Eichler. 
 
 Phoradendron cearense Eichler in v. Martius, Fl. Brasil. v. 5. pt. 2. p. 
 118. 1868. 
 
120 THE GENUS PHOEADENDEON 
 
 Pseudodichotomous, the slender branches with basal cataphyls only, 
 androgynous. Internodes moderate (1-3x30-40 mm.), somewhat papil- 
 lately roughened, acutely 4-angled, the upper rhombic. Cataphyls a sin- 
 gle pair, nearly basal, bifid. Leaves elliptical-obovate, more or less mu- 
 cronately obtuse or emarginate, 2-3x5-7 cm., cuneately subpetioled for 
 scarcely 5 mm. Spikes often clustered, very short (5-10 mm.) , with about 
 2 joints 4- to 6-flowered: peduncle 1-2 mm. long: scales ciliate. Fruit 
 ovoid, 3 mm. long, somewhat verrucose : sepals scarcely meeting. Plate 
 176. 
 
 Brazilian region. The type from Ceara. 
 
 Specimens examined: BRAZIL. Ceara (Gardner, 1675, the type). 
 
 With shorter internodes (10-20 mm. long), and rather thick more 
 often obovate and emarginate leaves, it is var. minor Eichler, I. c., from 
 the same region (Gardner, 1669}. P^ate 175. 
 
 PHORADENDRON CARACASANUM (Urban). 
 
 Phoradendrum caracasanum Urban, Bot. Jahrb. v. 23. Beibl. 57. p. 4. 
 1897. 
 
 Divaricately branched and pseudodichotomous, the rather stout 
 branches with basal cataphyls only, androgynous?. Internodes rather 
 short (2-3x15-40 mm.), very minutely papillate, rhombically ancipital or 
 acutely 4-angled or 4-winged. Cataphyls a single pair, nearly basal, 
 bifid. Leaves obovate, very obtuse, 1.5-2.5x3-3.5 cm., cuneately subpetioled 
 for about 5 mm., fleshy for the group and scarcely veined. Spikes sol- 
 itary, very short (5 mm.), with a single 4- or 6-flowered joint: peduncle 
 nearly suppressed. Fruit globose, 5 mm. in diameter, verrucose: sepals 
 inflexed. Plate 176. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined : VENEZUELA. Between Macqueria and Caracas 
 (Gollmer, Feb. 2, 1855, the type). 
 
 33. ARGENTINAE. 
 
 Leaves small, rather coriaceous and usually sharply nerved from the 
 base. Shoots at first ancipital, rhombic, or square, papillate. Cataphyls 
 1 or exceptionally 2 pairs, on the basal joint only. Flowers in 4 or 4-f 2 
 series. Fruit subovoid, somewhat rough, with erect sepals. Bolivian and 
 southern Andean regions. 
 
 Leaves broad for the group (1-2 cm.). P. argentinum. 
 Leaves narrow (under 1 cm.). 
 
 Rather oblanceolate : spikes very short. P. Meliae. 
 
 Lanceolate: spikes long for the group. P. Ernstianum. 
 
AEQUATORIALES ABGENTINAE 121 
 
 PHORADENDRON ARGENTINUM (Urban). 
 
 Phoradendrum argentinum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 14. 
 1897. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous. Internodes rather short (2-5x10-40 mm.), smooth, the up- 
 per rhombically quadrangular. Cataphyls a nearly basal pair, occasion- 
 ally followed by a second, spreading. Leaves elliptical or oblanceolate- 
 obovate, sometimes rather quadrate, obtuse, 1-2x2.5-5 cm., finely about 
 3-nerved and veiny, cuneately subsessile. Spikes mostly solitary, short 
 (15 mm.), with about 4 rounded joints some 6-flowered in 4-J-2 series: 
 peduncle nearly suppressed: scales ciliolate. Fruit round-ovoid, 4 mm. 
 in diameter, cellular-papillate or tuberculate: sepals erect, parted. j 
 Plate 177. 
 
 Bolivian region, on Ruprechtia etc. The type from Argentina. 
 
 Specimens examined: ARGENTINA. Chacarita de los Padres, Cata- 
 marca (Hieronymus, 419, Nov. 1872, the type). San Lorenzo, Jujui 
 (Hieronymus & Lorentz, 237). Sierra de Cordoba (Stuckert, 20252). 
 
 Phoradendron Meliae n. sp. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 eataphyls only, androgynous?. Internodes short (2-4x10-20 mm.), papil- 
 late, the upper rhombically ancipital or squarish. Cataphyls a nearly 
 basal pair, sometimes followed by a second some 5 mm. higher. Leaves 
 lanceolate to obovate-oblanceolate, rather mucronately acute, .5-1x2-3.5 
 cm., usually 3-nerved, cuneately subsessile. Spikes mostly solitary, short 
 (scarcely 10 mm.), with 2 or 3 very short joints some 4- to 6-flowered 
 in 4 or 4-J-2 series : peduncle nearly suppressed : scales subciliate. Fruit 
 (immature) red, round-ovoid, verrucose, 2-3 mm. in diameter: sepals 
 suberect and parted. Plate 178. 
 
 Bolivian region, on Melia, Larrea etc. The type from Paraguay. 
 
 Specimens examined: PARAGUAY. Asuncion (Balansa, 2495, May 
 1874, on Melia, the type). BOLIVIA. Velasco (Kuntze, 6). ARGENTINA. 
 Estancia San Teodoro, Cordoba (Stuckert, ? 11778, 13337, 20248). Cruz 
 del Eje, Cordoba (Stuckert, 14526). 
 
 PHORADENDRON ERNSTIANUM Patschovsky. 
 
 Plwradendron Ernstianum Patschovsky, Bot. Jahrb. vol. 45. p. 439. 1911. 
 Somewhat pseudodichotomous, the moderate branches with basal cata- 
 phyls only, androgynous. Internodes rather short (1-2x15-30 mm.), min- 
 utely papillate, the upper rhombically 4-angled. Cataphyls a single pair, 
 nearly basal. Leaves lanceolate, acute, scarcely .5x3 cm., 3-nerved, cune- 
 
122 THE GENUS PHOEADENDEON 
 
 ately subsessile. Spikes mostly solitary, short (10-25 mm.), with 3-5 
 rounded joints about 6-flowered in 4+2 series: peduncle nearly sup- 
 pressed: scales scarcely ciliate. Fruit subglobose, granular, scarcely 
 3 mm. in diameter : sepals erect, parted. Plate 177. 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Balsas to Calendin, Cajamarca (Web- 
 erbauer, 4251, the type). 
 
 34. LIGAE. 
 
 Leaves moderate or small, sharply basinerved though rather thick. 
 Shoots at first somewhat rhombically flattened. Cataphyls 1 or mostly 
 2 pairs, on the basal joint only. Flowers usually in 4+2 series. Fruit 
 somewhat papillate, usually with nearly closed sepals. Bolivian region. 
 Leaves narrow (under 10 mm.). 
 
 Short (scarcely 40 mm.) : sepals parted. P. pruinosum. 
 
 Moderately long (40-60 mm.) : sepals meeting. P. Liga. 
 
 Leaves broad (20 mm. or more). P. Hieronymi. 
 
 PHOBADENDRON PRUINOSUM (Urban). 
 
 Phoradendrum pruinosum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 14. 
 1897. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous. Internodes rather short (2 or 3x6-15 mm.), smooth, at 
 first rather ancipitally flattened. Cataphyls a single pair, nearly basal, 
 pale-margined. Leaves elliptical-oblong, mucronately subacute, .5-.8x 
 2.5-4 cm., more or less evidently 3-nerved, cuneately subsessile. Spikes 
 mostly solitary, short (about 10 mm.), with 2-4 joints 2-flowered to about 
 6-flowered in 4+2 series: peduncle nearly suppressed: scales scarcely 
 ciliate. Fruit round-ovoid, nearly smooth, 3x4 mm. : sepals erect. Plate 
 178. 
 
 Bolivian region ( ? exclusively) on Leguminosae. The type from 
 Argentina. 
 
 Specimens examined : ARGENTINA. Catamarca (Lorentz, 382, 688, 
 the type). Rioja (Hieronymus & Niederlein, 165). 
 
 PHORADENDRON LIGA Eichler. 
 
 Phoradendron Liga Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. p. 
 
 134m. 1868. 
 
 PTioradendrum Liga Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 15. 1897. 
 Viscum Liga Gillies: Hooker & Arnott, in Hooker, Bot. Miscell. vol. 3. 
 
 p. 355. 1833. 
 
AEQUATORIALES LIGAE 123 
 
 More or less pseudodichotomous, the rather long very slender branches 
 with basal cataphyls only, androgynous. Internodes moderate (1-2x25-60 
 mm.), smooth, at first rhombic but soon terete. Cataphyls a single pair 
 toward the base, or 2 pairs some 10 mm. apart, scarious-margined. Leaves 
 more or less falcately oblong to narrowly lanceolate, mucronately acute, 
 .5-1x4-6 cm., 3- to 5-nerved, gradually attenuate at base for about 5 mm. 
 rather than petioled. Spikes mostly solitary, moderate (20, becoming 
 30 mm.), with about 4 slender joints some 10- to 18-flowered in 4-J-2 
 series : peduncle about 5 mm. long : scales acute, scarious-margined, little 
 ciliate. Fruit red, subglobose, minutely cellular-papillate, 4 mm. in 
 diameter : sepals closely inflexed. Plates 179, 180. 
 
 Bolivian region. The type from Argentina. 
 
 Specimens examined : ARGENTINA. Los Cerillos de S. Juan ( Gillies, 
 the type of V. Liga). Cordoba (Lorentz, 395, 431, 471, 478; Hierony- 
 mus, 729; Kurtz, 8434). S. Jose (Lorentz & Hieronymus, 219}. Colonia 
 Benites (Stuckert, 16437}. Bellarita Corrientes (Stuckert, 14569). Cha- 
 carita de los Padres (Lorentz & Hieronymus, 420). Fuerte (Lorentz, 
 344). Catamarca (Kurtz, 6772). PARAGUAY. Sta. Elisa, Gran Chaco 
 (Eojas, 2732; Hassler, 2732). Concepcion (Hassler, 7551). Asuncion 
 (Balansa, 2496). Yaguaron (Balansa, 3218). Central Paraguay ( f M o- 
 rong, 618). BOLIVIA. S. Pablo (Kuntze, 5). 
 
 Phoradendron Hieronymi n. sp. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous?. Internodes rather short (2-3x20-40 mm.), 
 smooth, somewhat compressed or ancipital. Catapbyls usually a basal 
 pair and a second pair some 5 mm. higher, ciliate. Leaves more or less 
 obliquely elliptical to obovate, obtuse, 2-3x4-6 cm., distinctly 5- or 7- 
 nerved, cuneately subpetioled for about 5 mm. Spikes mostly solitary, 
 rather short (15-20 or 25 mm.), with about 3 oblong joints some 8- to 
 12-flowered in 4 or 4+2 series : peduncle scarcely 5 mm. long, often with 
 about 2 pairs of scales. Fruit subglobose, minutely cellular-papillate, 
 3 mm. in diameter : sepals closely inflexed but not meeting. Plate 180. 
 
 Bolivian region. The type from Argentina. 
 
 Specimens examined: ARGENTINA. Chacarita de los Padres, Cata- 
 marca (Hieronymus, 421, 1872. the type). Sierra Chica de Cordoba 
 (Lorentz, 432). Cruz del Eje, Cordoba (Stuckert, 13363). Fuerte (Lor- 
 entz, 36 4). Calera (Lorentz, 468). Catamarca (Hieronymus, Nov. 1873). 
 Guasopampa (Kurtz, 6783). Tucuman (LUlo, 20256). 
 
124 THE GENUS PHOEADENDEON 
 
 35. ENSIFOLIAE. 
 
 Leaves long or very narrow, rather heavy, basinerved. Shoots rather 
 quickly terete. Cataphyls 1-4 pairs, on the basal joint only. Flowers 
 mostly in 6 series. Fruit subglobose, smooth or wrinkled, with inflexed 
 sepals. Brazil. 
 
 Leaves very narrow, linear, widened upwards. P. linearifolium. 
 
 Leaves oblanceolate. 
 
 Narrow (5-20 mm.), tapered upwards. P. ensifolium. 
 
 Broad (20-40 mm.), broadest above the middle. 
 
 P. lanceolato-ellipticum. 
 
 PHORADENDRON LiNEApFOLiuM Eichler. 
 
 Phoradendron linearifolium Eichler in v. Martius, Fl. Brazil, vol. 5 pt. 2. 
 p. 115. pi. 36. 1868. 
 
 Frequently pseudodichotomous, the long branches with basal cata- 
 phyls only, or seemingly forked and then with cataphyls on all joints, 
 dioecious. Internodes long and slender (1-2x50-100 mm.), smooth, quickly 
 terete, swollen above. Cataphyls a single pair, nearly basal or as much 
 as 10 or 15 mm. above the base, or 2-4 often very irregularly spaced pairs. 
 Leaves linear-spatulate, very obtuse to emarginate or truncate, .2-.3 or 
 .6x10 to 16 cm., gradually attenuate to the base. Spikes often clustered, 
 moderate (10-15, lengthening to 30 mm.), with 2 or 3 slender joints some 
 6-flowered in 4 or 4+2 series when pistillate and as much as 50-flowered 
 in 6 series when staminate : peduncle scarcely 1 mm. long, followed by a 
 longer nearly or quite sterile joint. Fruit subglobose, 2-3 mm. in diam- 
 eter, somewhat rugosely low-granular: sepals not meeting. Plate 181. 
 
 Brazilian region. The type from Rio de Janeiro. 
 
 Specimens examined: BRAZIL. Rio de Janeiro (Riedel, the type; 
 Glaziou, 9468, 12032-3, 13926, 19419; Vie, 4938) . Organ Mts. (Burchell, 
 2129). 
 
 PHORADENDRON ENSIFOLIUM Eichler. 
 
 Phoradendron ensifolium Eichler in v. Martius, Fl. Brazil, vol. 5. pt. 2. 
 
 p. 114. pi. 35. 1868. 
 Viscum ensifolium Pohl in de Candolle, Prodromus. vol. 4. p. 281. 1830. 
 
 Somewhat pseudodichotomous, the long branches with basal cataphyls 
 only, dioecious. Internodes long and slender (2-3x50-100 mm. or more), 
 smooth, quickly terete. Cataphyls a nearly basal pair with usually a 
 second pair some 10 mm. higher. Leaves lanceolate, obtuse, 1.5-2.5x20-30 
 em., very long-attenuate at base, drying golden. Spikes mostly clustered, 
 moderate (30-40 mm.), with about half a dozen joints rounded and about 
 6-flowered in 4-J-2 series when pistillate or elongated and some 30-flow- 
 
AEQUATORIALES TUEBINISPICAE 125 
 
 ered in 6 series when staminate: peduncle scarcely 5 mm. long, with a 
 pair of basal scales. Fruit subglobose, 4 mm. in diameter, nearly smooth, 
 dull : sepals closely inflexed. Plate 182. 
 
 Brazilian region. The type from Barbacena. 
 
 Specimens examined: BRAZIL. Barbacena (Pohl, 106, the type of 
 V. ensifolium; Warming, 14, 381). Tristega (Czermak & Reineck, 312). 
 Porto Alegre (Czermak & Reineck, 637). 
 
 PHORADENDRON LANCEOLATO-ELLIPTICUM Eichler. 
 
 Phoradendron lanceolato-ellipticum Eichler in v. Martius, Fl. Brazil. 
 
 vol. 5. pt. 2. p. 114. pi. 35. 1868. 
 Vis cum lanceolato-ellipticum Pohl in de Candolle, Prodromus. vol. 4. p. 
 
 282. 1830. 
 V. interruptum de Candolle, Prodromus, vol. 4. p. 282. 1830. 
 
 Scarcely forked, the long branches with basal cataphyls only, dioe- 
 cious?. Internodes rather long (2-3x50-100 mm. or more, smooth, for a 
 time somewhat flattened. Cataphyls a nearly basal pair followed by 1-3 
 others at intervals of less than 5 to 25-40 mm. Leaves falcately oblance- 
 olate-oblong, very obtuse, 2-4x10-16 cm., rather short-cuneate at base. 
 Spikes often clustered, moderate (30-40 or 50 mm.), with about 4 slender 
 joints some 20-flowered in 6 series when pistillate : peduncle 5 mm. long, 
 usually with 1 or 2 lower pairs of scarcely ciliate scales. Fruit (imma- 
 ture) somewhat ellipsoidal, 2x3 mm., smooth: sepals closely inflexed. 
 Plate 183. 
 
 Brazilian region. The type from Goyaz. 
 
 Specimens examined: BRAZIL. Padre Luis Faria, Goyaz (Pohl, 273, 
 the type of V. lanceolato-ellipticum and of V. interruptum) . 
 
 36. TURBINISPICAE. 
 
 Leaves moderate, lanceolate, basinerved. Shoots for a time ancipital. 
 Cataphyls several pairs, on the basal joint only. Joints of the spikes tur- 
 binately many-flowered in 4+2 series. Fruit round, minutely papillate, 
 with closed sepals. Brazil. 
 
 Leaves lanceolate. P- macrarfhrum. 
 
 PHORADENDRON MACRARTHRUM Eichler. 
 
 Phoradendron macrartJirum Eiehler in v. Martius, Fl. Brasil. vol. 5. 
 
 pt. 2. p. 124. pi. 43. 1868. 
 P. macrarthron Eichler, 1. c. p. 107, in key, 133. 
 
 More or less pseudodichotomous, the rather long branches with basal 
 cataphyls only, dioecious?. Internodes rather long (2-4x40-60 mm.), 
 
126 THE GENUS PHOEADENDEON 
 
 sharply ancipital. Cataphyls 1 or 2 basal pairs, usually with another 
 pair some 5 mm. higher, tubular-bifid, white-margined. Leaves falcately 
 lanceolate, obtuse, 1.5-3x7-10 cm., distinctly about 5-nerved, cuneately 
 attenuate for 5-10 mm. or more. Spikes mostly solitary, long (30-50 
 mm.), with about 3 rather slender joints turbinately some 30- to 50- 
 flowered in 4+2 series : peduncle 5-8 mm. long : scales not ciliate. Fruit 
 (immature) subglobose, microscopically cellular-papillate, 4 mm. in 
 diameter : sepals inflexed. Plate 184. 
 
 Brazilian region. The type from Goyaz. 
 
 Specimens examined: BRAZIL. Goyaz (Gardner, 3765, the type). 
 
 37. FALCIFERAE. 
 
 Leaves narrowly oblanceolate, falcate, basinerved. Shoots, if some- 
 what flattened, scarcely angled. Cataphyls about 2 pairs, on the basal 
 joint only. Flowers in 4+2 series. Fruit warty, with closed sepals. 
 South America. 
 
 Leaves elongated, finely nerved. P. falcifrons. 
 
 PHORADENDRON FALCIFRONS Eichler. 
 
 PTioradendron falcifrons Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 134 m. 1868. 
 Viscum falcifrons Hooker & Arnott in Hooker, Bot. Miscell. vol. 3. p. 356. 
 
 1833. 
 
 Scarcely forked, the rather short branches with basal cataphyls only, 
 dioecious. Internodes rather short (2x20-30 mm.), somewhat compressed 
 above but scarcely angled. Cataphyls a basal pair followed by another 
 pair 5-10 mm. higher, tubular. Leaves falcately oblanceolate-oblong, .5-lx 
 5-7.5 cm., very obtuse, slenderly long-attenuate rather than petioled. 
 Spikes mostly solitary, short (10-20 mm.), with about 3 joints rounded 
 and some 6- to 10-flowered when pistillate and slender and 20- to 30- 
 flowered in 4+2 series when staminate : peduncle 3 mm. long, sometimes 
 with 1 or 2 pairs of basal scales. Fruit ovoid, 3x4 mm., slightly verru- 
 cose: sepals closely inflexed. Plates 185, 186. 
 
 La Plata region. The type from Uruguay. 
 
 Specimens examined: URUGUAY, Eio Uruguay (Tweedie, the type, 
 on laurels). Concepcion (Lorentz, 632, 1779, 1879, 4772). An island in 
 Rio Uruguay (Niederlein, 102). Sierra de Tambores (Arechavaleta, 
 136). Mattogrosso, etc. (Kuntze, 10). Cordillere de Peribebue (Bal- 
 ansa, 3219). 
 
AEQUATORTALES ANOMALAE 127 
 
 38. ANOMALAE. 
 
 Tomentose. Leaves small or rather broad, thick though evidently 
 nerved from the base. Shoots scarcely edged. Cataphyls a single pair, 
 on the basal joint only. Flowers in 4+2 series. Fruit round, retrorsely 
 hairy. Southern Andes. 
 
 Leaves moderately large (7 cm.) : sepals parted. P. tucumanense. 
 
 Leaves small (under 1 cm. long) : fruiting sepals meeting. P. Kuntzei. 
 
 PHORADENDRON TUCUMANENSE (Urban). 
 
 Phoradendrum tucumanense Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 16. 
 1897. 
 
 Not forked, the rather long branches with basal cataphyls only, dioe- 
 cious. Internodes moderate (2-4x40-50 mm.), densely stellate- tomentose 
 or short- villous like the foliage, compressed and dilated under the nodes 
 becoming terete. Cataphyls a single pair, about 5 mm. above the base, 
 scarcely tubular. Leaves lanceolate or the lowest elliptical, typically 
 acute, 1.5-3x7-9 cm., cuneately rather slender-petioled for 15-20 mm. 
 Spikes often clustered, moderate (25-35, becoming 50 mm. in fruit), 
 tomentose, with about 3 rather stout joints some 18-flowered in 4+2 ser- 
 ies when pistillate and as much as 50-flowered in 6 series when staminate : 
 peduncle 2 mm. long, often followed by a somewhat longer sterile joint : 
 scales deeply parted. Fruit subglobose, dark red, 3 mm. in diameter, 
 retrorsely hairy : sepals nearly glabrous, suberectly parted. Plates 187, 
 188. 
 
 Bolivian region ( ? exclusively) on Fagara. The type from Argen- 
 tina. 
 
 Specimens examined: ARGENTINA. Siambon, Sierra de Tucuman 
 (Lorentz & Hieronymus, 223, 235, 335, 782, 1874, the types). Cuesta 
 de Periquillo (Lillo, 5414). BOLIVIA. La Merced, Bermejo (Fiebrig, 
 2174). COUNTRY?. San Luis (Pearce, 1864). 
 
 PHORADENDRON KUNTZEI (Urban). 
 Phoradendrum Kuntzei Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 11. 1897. 
 
 Not forked, the moderate branches with basal cataphyls only, dioe- 
 cious. Internodes moderate (2x30 mm. or more), densely yellow-tomen- 
 tose like the foliage, somewhat compressed under the nodes becoming te- 
 rete. Cataphyls a single nearly basal pair. Leaves (on the young growth) 
 short-oblong, scarcely 2x5 mm., sessile, caducous. Spikes mostly clus- 
 tered, rather long (40 mm.), tomentose, with about 3 oblong or clavate 
 joints some 30-flowered when pistillate and 60-flowered when staminate 
 
128 THE GENUS PHOEADENDRON 
 
 in 4+2 series : peduncle 4 mm. long : scales rather deeply parted. Fruit 
 subglobose, 4-5 mm. in diameter, retrorsely hairy: sepals pubescent, in- 
 curved. Plate 188. 
 
 Bolivian region ( ? exclusively) on cacti. The type from Bolivia. 
 
 Specimens examined: BOLIVIA. Tunari Mts. at 1300 m. (Kuntze, 
 20, June 1892, the type). Cotana, at 2500 m. (Bucktien, 3156}. 
 
 C. PENNINERVIAE. 
 
 Nerves pinnate from a midrib which usually continues through the 
 leaf but sometimes vanishes below the middle ; never with several equally 
 strong nerves from the base. 
 
 Leaves thick and opaque. 
 
 Stem 4-lined : midrib evanescent. EGGERSIAE. 
 
 Stem ancipital or terete. 
 
 Leaves elongated (1:3-4), dull. UNDULATAE. 
 
 Leaves broad (1:2). 
 
 Spikes very long, Venezuelan. P. polygynum. 
 
 Spikes moderate. Bahamian. NORTHROPIAE. 
 
 Leaves fleshy : stem bluntly square. RUGULOSAE. 
 
 Leaves drying rather leathery or papery. 
 Not or scarcely revolute. 
 
 Midrib evanescent. HEYDEANAE. 
 
 Midrib percurrent. PTERONEURAE. 
 
 Revolute. HEXASTICHAE. 
 
 Leaves herbaceous, dull : stem sharply ancipital. PERUVIANAE. 
 
 39. EGGERSIAE. 
 
 Leaves large, rather thick and dull, evanescently heavily pinnately 
 nerved. Shoots acutely quadrangular. Cataphyls 2 pairs, on the basal 
 joint only. Spikes stout and long. Flowers in 4+2 series. Fruit gran- 
 ular, with widely parted sepals. Andes. 
 
 Leaves ovate. P. Eggersii. 
 
 PHORADENDRON EGGERSII (Urban). 
 
 PJioradendrum Eggersii Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 10. 1897. 
 
 Scarcely forked, the branches with basal cataphyls only, androgy- 
 nous?. Internodes rather short, stout (3-5x25-50 mm.), nearly smooth, 
 square or 4-keeled, slightly swollen but not compressed at the nodes. 
 Cataphyls a basal pair followed by another more or less fertile pair some 
 10 mm. higher. Leaves very broadly elliptical or ovate, very obtuse, 
 7-11x11-15 cm., abruptly petioled for 15-20 mm., rather thick and dull, 
 obscurely pinnately veined below the middle. Spikes mostly clustered, 
 
AEQUATORIALES UNDULATAE 129 
 
 rather long (40-60 mm.), with about 3 stout oblong joints 22- to 30-flow- 
 ered in 4+2 series: peduncle almost suppressed. Fruit globose, tuber- 
 culate, 5 mm. in diameter : sepals widely spreading with upcurved tips. 
 Plate 211. 
 
 Andean region. The type from Ecuador. 
 
 Specimens examined: ECUADOR. Hacienda El Recreo, Manabi (Eg- 
 gers, 15229, Aug. 29, 1893, the type). 
 
 40. NORTHKOPIAE. 
 
 Leaves moderate or rather large, somewhat thick and dull, scarcely 
 revolute, very obscurely subpinnately nerved. Shoots somewhat rhom- 
 bic. Cataphyls a single pair, on all joints? Flowers in 4+2 series. 
 Fruit round, smooth, with parted sepals. Bahamas. 
 
 Leaves obovate or spatulate, often emarginate. P. Northropiae. 
 
 PHORADENDRON NORTHROPIAE Urban. 
 
 Phoradendron Northropiae Urban, Mem. Torrey Bot. Cl. vol. 12. p. 33. 
 pi. 4. 1902. 
 
 Commonly forked or fasciculate, the moderate branches apparently 
 with cataphyls on all joints, androgynous. Internodes moderate (2-5x 
 20-60 mm.), minutely papillate, for a time somewhat rhombic or com- 
 pressed, enlarged at the nodes. Cataphyls a single pair 5 mm. or less 
 above the base, or rarely 2 pairs, short-tubular. Leaves obovate to sub- 
 spatulate, very obtuse to obcordately notched, 2.5-3x3-5, or 4-5x6-10 cm., 
 cuneately subpetioled for 5 mm., obscurely penninerved. Spikes often 
 densely clustered, rather short (20-25 mm.), with about 4 subfusiform 
 moderately thick joints covered by some 8-18 flowers in 4+2 series: 
 peduncle scarcely 5 mm. long, with a second pair of scales. Fruit red, 
 subglobose, smooth : sepals erect, not meeting. Plate 189. 
 
 Bahamian region ( 1 exclusively) on Mimusops. The type from An- 
 dros. 
 
 Specimens examined: BAHAMAS. ANDROS ISL. (Northrop, 551, 1890, 
 the type; Brace, 5325; Small & Carter, 8479). 
 
 41. UNDULATAE. 
 
 Leaves rather large, lanceolate, thick, dull, obscurely pinnately 
 nerved. Shoots sharply ancipital above. Cataphyls mostly 3-4 pairs, on 
 the basal joint only. Flowers in 4+2 series. Fruit ellipsoid, smooth, 
 with nearly closed sepals. Brazil to the West Indies. 
 
130 THE GENUS PHOEADENDEON 
 
 Leaves drying dull. South America. 
 
 Spikes rather stout and short. P. undulatum. 
 
 Spikes long and slender. P. gracilispicum. 
 
 Leaves glossy. Caribbees. P. Herminieri. 
 
 PHORADENDRON UNDULATUM Eichler. 
 
 Phoradendron undulatum Eichler in v. Martius, PI. Brasil. vol. 5. pt. 2. 
 
 p. 122. pi. 39. 1868. 
 
 Viscum undulatum Pohl in de Candolle, Prodromus. vol. 4. p. 282. 1830. 
 Phoradendrum undulatum Urban, Bot. Jahrb. vol. 24. p. 42. 1897, as 
 
 to the mainland. 
 
 More or less pseudodichotomous or verticillate, the long branches with 
 basal cataphyls only, androgynous. Internodes moderate (2-5x30-70 
 mm.), smooth, for a time strongly ancipital. Cataphyls a nearly basal 
 pair usually followed by 1 or 2 additional pairs and occasionally by a 
 fourth, at intervals increasing up to 40 mm., tubular, somewhat keeled 
 and pointed. Leaves lanceolate to oblanceolate or somewhat ovate, very 
 obtuse to acuminate, 2-4x7-15 cm., cuneately subpetioled for 5-10 mm. 
 Spikes often clustered, moderate (30, lengthening to 50 mm.), with 4-6 
 short rather stout joints some 10-flowered in 4+2 series : peduncle very 
 short, with 1 or 2 basal pairs of scales: scales ciliolate. Fruit round- 
 ovoid, smooth, 3 mm. in diameter: sepals somewhat parted. Plates 190, 
 191. 
 
 Brazilian and Bolivian regions. The type from Brazil. 
 
 Specimens examined: BRAZIL. Barbacena (Pohl, 868, 1828, the 
 type of V. undulatum). Minas Geraes (Lindberg, 253). Rio de Janeiro 
 (Riedel; Glaziou, 4003, 6893, 8243). Without locality (Burchell, 4396). 
 BOLIVIA. Yungas (t Bang, 363, 2903). Mapiri (Rusby, 1546). 
 
 Phoradendron gracilispicum n. sp. 
 
 Somewhat pseudodichotomous, the long branches with basal cataphyls 
 only, androgynous?. Internodes moderate (2-3x40-60 mm.), ancipital 
 and rather persistently 2-keeled. Cataphyls a nearly basal pair usually 
 followed by a second pair some 20 mm. higher, and occasionally by a third 
 pair, acute, 2.5-4x10-16 cm., wing-petioled for 10-15 mm. Spikes often 
 clustered, long (40-70 mm.), reddish, with about 10 slender joints some 
 12-flowered in 4 or 4+2 series : peduncle 2 mm. long, often followed by 
 1 or 2 partly or wholly sterile joints: scales and receptacular cups cili- 
 olate. Fruit (young) elongated: sepals meeting. Plate 192. 
 
 Isthmian and Venezuelan regions. The type from Costa Rica. 
 
 Specimens examined: COSTA RICA. Monte de Velirla du Copey 
 (Tonduz, 12215, the type). Rio Jesus (Brenes, 14519) . San Jose (Hoff- 
 
AEQUATORIALES PERUVIANAE 131 
 
 mann, 809, 1857; Tonduz, 1393, 10110}. S. Ramon (Brenes, 14406). 
 Piedra Blanca (Pittier, 1258). Los Frailes (Tonduz, 7884). Without 
 locality (Oersted, 3, 3086, in part, P. latifolium Oliver). PANAMA. Chir- 
 iqui ( f Pittier, 2932, 3312) . COLOMBIA. Popayan ( fLehmann, 3565, 8538) . 
 Without locality (Kalbreyer, 353). VENEZUELA. Tovar (Fendler, 1109). 
 
 Phoradendron Hermmieri n. sp. 
 
 Phoradendrum undulatum Urban, Bot. Jahrb. vol. 24. p. 42. 1897, as 
 to the West Indies. 
 
 More or less pseudodichotomous, the moderate branches with basal 
 cataphyls only, androgynous. Internodes moderate (2-4x25-40 mm.), the 
 upper somewhat compressed rather than ancipital. Cataphyls mostly 3 
 pairs, one nearly basal, the others at intervals of 10 or 15 mm., scarcely 
 tubular. Leaves rather ovate-lanceolate, attenuately subacute to obtuse, 
 2.5-3x6-9 cm., cuneately subpetioled for about 5 mm. Spikes more or less 
 clustered, rather long (25, becoming 40 mm.), with half a dozen rather 
 slender joints some 10-flowered in 4+2 series : peduncle very short, usu- 
 ally followed by 1 or 2 equally short joints and a longer sterile joint: 
 scales scarcely ciliate. Fruit (immature) round-ovoid, smooth, 3x4 mm.: 
 sepals nearly meeting. Plate 191. 
 
 Caribbean region. The type from Guadeloupe. 
 
 Specimens examined: CARIBBEES. GUADELOUPE (Duss, 3904 in part, 
 the type, 2966 in part, 4157, 4418 in part; L'Hermimer, a). DOM- 
 INICA (Lloyd, 207). 
 
 42. PERUVIANAE. 
 
 Leaves rather large except in one species, lanceolate or ovate-lance- 
 olate, dull, drying rather thick, pinnately nerved from a more or less 
 evanescent midrib beneath. Shoots ancipital. Flowers in 4+2, 6 or 6+2 
 series. Fruit round, mostly smooth, with closed sepals. Andes. 
 
 Spikes rather stout. 
 
 Leaves elliptical-ovate, obtuse. 
 
 Spikes stout-peduncled ; flowers in 6 series. P. peruvianum. 
 Spikes slender-peduncled : flowers in 4+2 series. P. Balansae. 
 
 Leaves elongated lanceolate, subacute. P. Mandonii. 
 Leaves lance-ovate, subacute. 
 
 Spikes moderate (30 mm.). P. avenia. 
 
 Spikes rather long and relatively slender. P. Englerianum. 
 
 Spikes very slender and short. P. Mathewsi. 
 
 PHORADENDRON PERUVIANUM Eichler. 
 
 Phoradendron peruvianum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 123. 1868. 
 
132 THE GENUS PHOEADENDKON 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous?. Internodes moderate (2-3x20-60 mm.), nearly smooth, 
 ancipitally compressed, somewhat dilated upwards. Cataphyls a single 
 pair towards the base, somewhat spreading, white-margined. Leaves 
 broadly lanceolate, sometimes falcate, acute to obtuse, 3-4 or 5x6-12 cm., 
 rather abruptly petioled for 5-7 mm. Spikes solitary, moderate (becom- 
 ing 40-50 mm.), with 3 or 4 stout oblong joints nearly 50-flowered in 6 or 
 6-|-2 series : peduncle stout, 3-5 mm. long. Fruit red, subglobose, smooth, 
 4 mm. in diameter : sepals closely inflexed. Plate 193. 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Without locality (Ruiz, the type). 
 
 Phoradendron Balansae n. sp. 
 
 Somewhat pseudodichotomous, the rather long branches with basal 
 cataphyls only, androgynous?. Internodes rather long (2-4x40-100 mm.), 
 granular, strongly ancipital but little dilated. Cataphyls a single pair 
 somewhat above the base, openly tubular, white-margined. Leaves ellip- 
 tical to oblanceolate-oblong, sometimes oblique, very obtuse, 2.5-3.5x 
 5.5-7.5 cm., cuneately wing-petioled for about 10 mm. Spikes mostly sol- 
 itary, moderate (20, becoming 30 mm.), with about 3 moderately stout 
 elongated joints rather turbinately some 18- to 26-flowered in 4+2 series : 
 peduncle nearly suppressed, usually followed by an elongated nearly or 
 quite sterile joint. Fruit subglobose, smooth, 3 mm. in diameter: sepals 
 closely inflexed. Plate 194. 
 
 Bolivian region, on Punica etc. The type from Paraguay. 
 
 Specimens examined: PARAGUAY. Asuncion (Balansa, 2497, May 
 1874, the type). Resistencia, Charco (Stuckert, 13363, 18606}. ARGEN- 
 TINA. Tucuman (Stuckert, 20256). Sierra de Guasapampa, Cordoba 
 (Kurtz, 6784). Rio La Plata (Palmer, 1853-4). Concepcion (Hassler, 
 7436, f. Hassleri (PI. 195), with cylindrical spike- joints). Pilcomayo 
 River (Morong, 954, f. Morongi, with 2 pairs of cataphyls). 
 
 PHORADENDRON MANDONII Eichler. 
 
 Phoradendron Mandonii Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 124. 1868. 
 
 Scarcely forked, the long branches with basal cataphyls only, andro- 
 gynous?. Internodes moderate (2-3x40-60 mm.), smooth, ancipital. Cata- 
 phyls a basal pair, sometimes closely followed by a second, tubular-bifid. 
 Leaves more or less obliquely lanceolate, subacute, 2-3x8-10 cm., cuneately 
 wing-petioled for about 10 mm. Spikes mostly solitary, moderate (30 
 mm.), with about 3 stout joints some 10 to 18-flowered in 4-f-2 series: 
 
AEQUATOBIALES PERUVIANAE 133 
 
 peduncle 3 mm. long. Fruit globose, dull, obscurely granular, 4 mm. in 
 diameter: sepals closely inflexed. Plate 197. 
 
 Andean region. The type from Bolivia. 
 
 Specimens examined. BOLIVIA. Sorata, Larecaja, at 10000 ft. (Man- 
 don, 1467, Feb. 1861. the type) . 
 
 Phoradendron avenia n. sp. 
 Phoradendron quadr -angular e avenia Hieronymus in Herb. Berolin. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous?. Internodes short and stout (3-6x20-30 mm.), smooth, an- 
 cipital or rhombically 4-angled, dilated upwards. Cataphyls a single pair 
 nearly 10 mm. above the base, acute. Leaves broadly lanceolate or ovate- 
 lanceolate, rather acute, 1.5-2x3.5-5 cm., cuneately petioled for 5-7 mm. 
 Spikes mostly solitary, moderate (30 mm. in fruit), with about 4 short 
 stout oblong joints some 6-flowered in 4+2 series: peduncles 2-3 mm. 
 long, sometimes followed by a sterile joint. Fruit globose, nearly smooth, 
 3 mm. in diameter : sepals inflexed. Plate 195. 
 
 Andean region. The type from Colombia. 
 
 Specimens examined: COLOMBIA. Paramo de Coper (Stuebel, 105, 
 July 1868, the type). 
 
 PHORADENDRON ENGLERIANUM Patschovsky. 
 
 Phoradendron Englerianum Patschovsky, Bot. Jahrb. vol. 45. p. 439. 
 1911. 
 
 Scarcely forked, the long branches with basal cataphyls only, dioe- 
 cious?. Internodes rather long (2-4x30-70 mm.), slightly granular, an- 
 cipital or rhombically somewhat quadrangular, dilated at the nodes. Cata- 
 phyls a nearly basal pair, sometimes followed closely by a second or even 
 by a third pair some 10 mm. distant, short and spreading. Leaves lance- 
 olate, obtuse, 2.5-6x9-15 cm., cuneately petioled for scarcely 5 mm. Spikes 
 more or less clustered, rather long (40-60 mm.), with half a dozen long 
 slender joints some 40- to 60-flowered in 4-J-2 or 6 series: peduncle 
 scarcely 2 mm. long. Fruit (immature) subglobose, smooth, 3 mm. in 
 diameter: sepals inflexed. Plate 196. 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Chanchamayo Valley, Funin, Tarma 
 (Weberbauer, 1903 pistillate, 1904 staminate, Dec. 1902, the types). 
 
 Phoradendron Mathewsi n. sp. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous?. Internodes moderate (2-5x30-60 mm.), nearly smooth, 
 
134 THE GENUS PHOKADENDRON 
 
 ancipital, somewhat thickened at the nodes. Cataphyls a single nearly 
 basal pair, short and spreading, white-margined. Leaves somewhat 
 obliquely elliptical-lanceolate, acute or obtuse, 2-4x6-8 cm., cuneately 
 wing-petioled for scarcely 10 mm. Spikes clustered, short (20 mm.), 
 with 3 or 4 short but very slender joints some 8-flowered in 4+2 series : 
 peduncle 2 mm. long. Fruit (immature) globose, smooth, 2 mm. in diam- 
 eter : sepals closely inflexed. Plate 197. 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Chacapoyas (M. Mafhews, 1846, the 
 type, in the Delessert Herbarium at Geneva). 
 
 43. RUGULOSAE. 
 
 Leaves moderate, rather fleshy, drying finely rugulose, scarcely revo- 
 lute, subpinnately veined. Shoots fleshy, drying somewhat rugosely quad- 
 rangular. Cataphyls several pairs, on the basal joint only. Flowers in 
 4 or 4+2 series. Fruit round, nearly smooth, with closed sepals. Brazil. 
 
 Leaves broadly elliptical. P. Warmingii. 
 
 PHORADENDRON WARMINGII Eichler. 
 
 Phoradendron Warmingii Eichler in Warming, Vidensk. Meddel. Natur- 
 
 hist. Foren. Kjobenhavn. 1870. p. 209. 
 Phoradendron sp. Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. p. 117. 
 
 1868. 
 Phoradendrum rugulosum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 13. 
 
 1897. 
 
 More or less forked, the moderate branches with basal cataphyls only, 
 androgynous. Internodes rather short (2-6x30-50 mm.) , fleshy and wrin- 
 kled in drying, quadrangular, minutely papillate like the foliage. Cata- 
 phyls a nearly basal pair mostly followed by a second and sometimes by 
 a third pair at intervals of 10-15 mm., or exceptionally 6-8 crowded pairs, 
 ovate, rather spreading. Leaves broadly elliptical to elliptical-obovate, 
 mostly very obtuse, 2.5-4x4-6 cm., more or less abruptly wing-petioled 
 for 3 or 5-10 mm. Spikes mostly clustered, moderate (30-40 mm.), with 
 about 3 swollen joints some 6- to 18-flowered in 4 or 4+2 series : peduncle 
 short, usually with 2 or 3 pairs of scales. Fruit subglobose, nearly smooth, 
 4 mm. in diameter : sepals inflexed. Plate 198. 
 
 Brazilian region ( ? exclusively) on Vochysia. The type from Lagoa 
 Santa. 
 
 Specimens examined: BRAZIL. Lagoa Santa (Warming, 383, Jan. 
 14, 1865, the type). Organ Mts., Kio de Janeiro (Glaziou, 4012, Apr. 
 1870, the type of P. rugulosum which in this specimen differs in its 
 longer petioles and shorter fewer-flowered spike- joints, but is otherwise 
 scarcely distinguishable from the type). 
 
AEQUATORIALES HEXASTICHAE 135 
 
 44. HEYDEANAE. 
 
 Leaves large, rather thin, finely pinnately nerved below the middle. 
 Shoots rhombically ancipital. Cataphyls typically a single pair, on the 
 basal joint only. Flowers in 4+2 series. Central America. 
 
 Leaves ovate : spike- joints turbinately flowered. P. Heydeanum. 
 
 Phoradendron Heydeanum n. sp. 
 
 Pseudodichotomous, the long branches with basal cataphyls only, 
 dioecious?. Internodes moderate (2-4x30-50 mm.) sharply ancipital, 
 somewhat rhombically widened below the nodes. Cataphyls a single basal 
 pair, or occasionally 2 or 3 pairs, tubular-bifid. Leaves ovate-lanceolate, 
 5x10 cm., or obovate and reduced to 2x3.5 cm., subobtuse, rather abruptly 
 wing-petioled for about 10 mm. Spikes often clustered, moderate (30-50 
 mm.), with 4-5 slender elongated joints somewhat turbinately about 16- 
 flowered in 4+2 series : peduncle 2-4 mm. long. Fruit ?. Plate 199. 
 
 Guatemalan and Isthmian regions. The type from Guatemala. 
 
 Specimens examined: GUATEMALA. San Miguel Uspantan, Quiche 
 (Heyde & Lux, 3140, Apr. 1892, the type). COSTA RICA. Paramo del 
 Abejoval (? Tonduz, 1840}. Tucurique (t Tonduz, 13142}. These lat- 
 ter, f. australis, have smaller leaves (3.5x5 cm.) and subglobose smooth 
 immature fruit 3 mm. in diameter, with closely inflexed sepals. 
 
 45. HEXASTICHAE. 
 
 Leaves moderate or rather large, rather thick and chartaceous, revo- 
 lute, pinnately nerved. Shoots compressed or ancipital. Cataphyls a 
 single pair, on the basal joint only. Flowers mostly in 6 series. Fruit 
 round, smooth, with closed sepals. West Indies and eastern Mexico. 
 
 Leaves ovate to lanceolate. P. hexastichum. 
 
 Leaves elliptical. P. Oliverianum. 
 
 PHORADENDRON HEXASTICHUM Grisebach. 
 
 Phoradendron hexastichum Grisebach, Fl. Br. W. I. p. 313. 1860. 
 Viscum hexastichum de Candolle, Prodromus. vol. 4. p. 282. 1830. 
 Phoradendrum hexastichum Urban, Bot. Jahrb. vol. 24. p. 46. 1897. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous. Internodes moderate (2-6x30-60 mm.), smooth, sharply 
 ancipital or somewhat rhombic and dilated upwards. Cataphyls a single 
 pair, scarcely 5 mm. above the base, openly annular. Leaves ovate, very 
 obtuse, 3-5x8-9 cm., cuneately or rather abruptly petioled for 5-8 mm. 
 Spikes more or less clustered, rather long (20, becoming 40-60 mm.), 
 
136 THE GENUS PHOEADENDEON 
 
 with about 4 slightly clavate joints some 18- to 42-flowered in 6 or 8 
 series: peduncle scarcely 5 mm. long, sometimes with a basal pair of 
 scales. Fruit white, globose, smooth, 3 mm. in diameter: sepals closely 
 inflexed. Plate 200. 
 
 Antillean and Caribbean regions. The type from Cuba. 
 
 Specimens examined: ANTILLES. CUBA (de la Ossa, 1825, the type 
 of V. hexastichum; fShafer, 8590, Wright, 1252}. HAITI (Picarda, 1623; 
 ex. herb. Sprengel, as V. myrtilloides). SANTO DOMINGO (Eggers, 1899; 
 Lloyd, 765; Taylor, 328; v. Tuerckheim, 3284; Wright, Parry & Brum- 
 mel, 460). PUERTO Rico (Hess, 675; Sintenis, 2836, 5383}. CARIBBEES. 
 GUADELOUPE (Duss, 4137}. MARTINIQUE (Belanger, 131; Duss, 1375, 
 4415; Hahn, 1386; Sieber, 227 in part). ST. VINCENT (Guilding; Smith, 
 297}. GRENADA (Broadway, 1021}. 
 
 With lanceolate leaves only 2-2.5 cm. wide, it is var. angustifolia, 
 Phoradendrum hexastichum angustifolium Krug & Urban, Bot. Jahrb. 
 vol. 24. p. 46. 1897, from Grenada (Eggers, 6140}, connected with the 
 type by Broadway, 1894, from the same island. Plate 201. 
 
 Phoradendron Oliverianum n. sp. 
 
 More or less fascicled, the moderate branches with basal cataphyls 
 only, dioecious?. Internodes rather short (2-5x20-50 mm.), nearly smooth, 
 the upper ancipital and somewhat dilated upwards. Cataphyls a single 
 pair, mostly 5-10 mm. above the base, ovate, spreading. Leaves elliptical 
 or subovate, more or less mucronulate but very obtuse, 2 or 2.5-4x4.5-6 
 or 10 cm., cuneately or rather abruptly petioled for 5-8 mm. Spikes more 
 or less clustered, moderate (20-35 mm.), with about 3 subfusiform joints 
 some 10- to 24-flowered in 4-6 series: peduncle 2-5 mm. long. Fruit?. 
 Plate 201. 
 
 Eastern Sierra Madre region. The type from eastern Mexico. 
 
 Specimens examined : MEXICO. El Mirador, Vera Cruz (Liebmann, 
 6, 3085, 1842, the type : P. hexastichum Oliver, Vidensk. Meddel. Na- 
 turh. Foren. Kjobenhavn. 1864. p. 175). 
 
 46. PTERONEURAE. 
 
 Leaves usually large, more or less coriaceous, rarely revolute, pin- 
 nately nerved. Shoots subterete to ancipital, 2-keeled or quadrangular. 
 Cataphyls 1- several pairs, on the basal joint only or on all in cases of 
 forking. Flowers in 4-6 series. Fruit rounded, mostly smooth, with 
 more or less closed sepals. West Indies and South America. 
 
 Usually forking and hence with cataphyls on all joints. P. racemosum. 
 Cataphyls on the basal joints only. 
 
AEQUATORIALES PTERONEURAE 137 
 
 Spikes rather slender : cataphyls a single pair. P. productipes. 
 Spikes clavate. 
 
 Cataphyls a single pair. 
 
 Internodes flattened. P. bolivianum. 
 
 Internodes not dilated. P. cerinocarpum. 
 
 Cataphyls 1-2 pairs : internodes 2-winged. P. carinatum. 
 Cataphyls several pairs : internodes not compressed. 
 
 Cataphyls 2 pairs : shoots quadrangular. P. Brittonianum. 
 
 Cataphyls 3 pairs : shoots 2-keeled. P. pteroneuron. 
 
 PHORADENDRON RACEMOSUM Northrop. 
 
 Phoradendron racemosum Northrop, Mem. Torr. Bot. Cl. vol. 12. p. 33. 
 
 1902. 
 
 Viscum racemosum Aublet, Guian. vol. 2. p. 895. 1775. 
 V. latifolium Lamarck, Encycl. vol. 3. p. 57. 1789. 
 V. macrophyllum Sprengel, Syst. vol. 1. p. 488. 1825. de Candolle, Pro- 
 
 dromus, vol. 4. p. 282. 
 
 V. pennivenium de Candolle, Prodromus. vol. 4. p. 282. 1830. 
 V. glandidosum Miquel, Linnaea. vol. 18. p. 60. 1844. 
 Phoradendron hexastichum latifolium Grisebach, Cat. p. 120, 1866. 
 P. pennivenium Eichler in v. Martius, Fl. Brazil, vol. 5. pt. 2. p. 128. 
 
 pi. 42. 1868. 
 
 P. cayennense Eichler, 1. c. p. 129. 134 m. 1868. 
 P. glandulosum Eichler, 1. c. p. 134 m. 1868. 
 Plioradendrum racemosum Krug & Urban, Bot. Jahrb. vol. 24. p. 46. 
 
 1897. 
 
 Usually forked and the long branches therefore mostly with cataphyls 
 on all joints, androgynous. Internodes long (2-5x70-150 mm.), some- 
 times granular, nearly terete, somewhat enlarged below the nodes. Cata- 
 phyls a basal pair, mostly followed by a second or occasionally a third 
 pair at intervals of 5-10 mm., subannular. Leaves from broadly lance- 
 olate to elliptical, ovate or orbicular, very obtuse or somewhat blunt- 
 acuminate, 5-8 or 10x10-16 cm., usually abruptly wing-petioled for 10-20 
 mm. Spikes often clustered, long (30-50 or 70 mm.), with mostly 4 or 5 
 rather long joints thickened except at the ends, some 20-flowered in 4+2 
 series: peduncle some 8 mm. long, with a basal pair of scales. Fruit 
 white, round-ellipsoid, mostly smooth, 3x4 mm. : sepals inflexed or some- 
 what parted. Plates 202, 203. 
 
 Upper West Indies and Northern South America; absent from the 
 intervening Caribbees. The type from Cayenne. 
 
 Specimens examined: BAHAMAS. ANDROS (Northrop, 704). AN- 
 TILLES. CUBA (Wright, 438=1252 in part). HAITI (Picarda, 1605b; 
 Christ, 1960; Nash, 150a). STO. DOMINGO (Eggers, 1741, 2011; Kuntze, 
 415; Prenleloup, 507; Taylor, 28, 415}. PUERTO Rico (Bertero, 1820, 
 
138 THE GENUS PHOBADENDRON 
 
 the type of V. macrophyllum; Britton, Stevens & Hess, 2535, 2569; Cow- 
 ell, 626; Eggers, 880; Heller 514; Kuntze, 219, 415; Sintenis, 6758 as 
 host; Stevens, 4817 as host). FRENCH GUIANA (Perrottet, 1820 the type 
 of V. pennivenium) . SURINUM (Wullschlaegel, 1481; Focke, the type 
 of V. glandulosum) . BRITISH GUIANA (7m Thurn, Sept. 1879; Jenman. 
 2218, 4055; Schomburgk, 554). VENEZUELA, on the lower Orinoco (Rusby, 
 1896). 
 
 Phoradendron productipes u. sp. 
 
 Phoradendron hexastichum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 p. 129. pi. 43. 1868, as to Brazil. 
 
 Somewhat pseudodichotomous, the long branches with basal cataphyls 
 only, androgynous. Internodes moderate (2-4x40-160 mm.), smooth, for 
 a time somewhat rhombically ancipital, scarcely enlarged upwards. Cata- 
 phyls a single nearly basal pair, subannular. Leaves elliptical-oblance- 
 olate or obovate, very obtuse, 4-6x8-12 cm., acutely attenuate at base and 
 wing-petioled for 15 mm. Spikes more or less clustered, rather long 
 (30-50 mm.), with about 4 rather long and slender fusiform joints some 
 24- to 30-flowered in 6 series: peduncle 3-5 mm. long. Fruit globose, 
 smooth, 4 mm. in diameter: sepals inflexed and nearly meeting. Plate 
 204. 
 
 Brazilian region. The type from Ceara. 
 
 Specimens examined: BRAZIL. CEARA (Gardner, 1676, the type, 
 1679). San Gabriel da Cachoeira, Rio Negro (Spruce, 2112, the type 
 of P. Jiexastichum var. longispica Eichler, 1. c.). Plate 204. 
 
 Phoradendron bolivianum n. sp. 
 
 Scarcely forked, the moderate branches with basal cataphyls only, 
 androgynous?. Internodes short (2-3x20-30 mm.) , nearly smooth, at first 
 rhombically very sharply ancipital, somewhat dilated upwards. Cata- 
 phyls a single basal pair or as many as 4 crowded pairs, somewhat openly 
 tubular. Leaves elliptical-oblanceolate, sometimes mucronate, very ob- 
 tuse, 4-5x7-11 cm., acutely attenuate to a winged petiole scarcely 10 mm. 
 long. Spikes mostly solitary, rather long (20, becoming 50 mm.), with 
 about 4 fusiform-oblong joints some 24- to 40-flowered in 6 series: pedun- 
 cle 3 mm. long, often followed by a sterile joint. Fruit (immature) glo- 
 bose, smooth, 4 mm. in diameter : sepals closely inflexed. Plate 205. 
 
 Bolivian region. The type from Bolivia. 
 
 Specimens examined: BOLIVIA. Yungas (Bang, as a second collec- 
 tion for 632, the type). Mapiri (Rusby, 1547). Tumupasa, at 1800 ft. 
 (WUliams,581). 
 
AEQUATORIALES PTERONEUEAE 139 
 
 Phoradendron cerinocarpum C. Wright n. sp. 
 Phoradendron cerinocarpum C. Wright in herb. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous?. Internodes moderate (2-3x30-60 mm.), smooth, rhombic 
 or ancipital. Cataphyls a single pair, nearly basal, little tubular, white- 
 margined. Leaves broadly lanceolate, very obtuse, as much as 7x16 cm., 
 cuneately subpetioled for 10 mm. Spikes mostly solitary, moderate (30 
 or 40 mm.), with about 3 rather thick joints somewhat turbinately about 
 20-flowered in 4-}-2 series: peduncle 2 or 3 mm. long, sometimes with a 
 basal pair of white-margined scales. Fruit red, nearly globose, 3-4 mm. 
 in diameter, smooth : sepals scarcely meeting. Plate 206. 
 
 Antillean region. The type from Santo Domingo. 
 
 Specimens examined : ANTILLES. SANTO DOMINGO. Without locality 
 (Wright, Parry & Brummel, 459, the type). Barahona (Fuertes, 275, 
 927} . Azua (Rose, Fitch & Russell, 3936) . 
 
 Phoradendron carinatum n. sp. 
 
 Scarcely forked, the long branches with basal cataphyls only, andro- 
 gynous. Internodes rather stout and long (3-5x40-80 mm.), nearly 
 smooth, sharply 2-keeled, scarcely dilated upwards. Cataphyls a nearly 
 basal pair, sometimes followed by a second pair scarcely 10 mm. higher, 
 subannular. Leaves lanceolate, sometimes falcate or somewhat dimidiate, 
 rather acute, 4-6x15 cm. or longer, cuneately subsessile. Spikes mostly 
 solitary, moderate (40-60 mm.), with 4-6 rather stout oblong joints turbi- 
 nately some 25-flowerd in 4 or 4+2 series : peduncle 2 mm. long. Fruit 
 (immature) round-ellipsoidal, essentially smooth, 3x4 mm.: sepals in- 
 flexed and nearly meeting. Plate 207. 
 
 Cayenne region. The type from Demerara. 
 
 Specimens examined : BRITISH GUIANA (Jenman, 2542, Nov. 1886, 
 the type) . Noted as the largest-leaved of the Demeraran species. 
 
 PHORADENDRON BRITTONIANUM Rusby. 
 
 Phoradendron Brittonianum Rusby, Mem. Torrey. Bot. 01. vol. 4. p. 254. 
 1895. 
 
 More or less forked, the long stout branches with basal cataphyls only, 
 androgynous?. Internodes moderate (3-5x50-70 mm.), nearly smooth, 
 from ancipital becoming sharply quadrangular and finally terete, some- 
 what swollen at the nodes. Cataphyls 2 pairs, respectively 5 and 25 mm. 
 above the base, subannular or broadly triangular and acute. Leaves 
 round-ovate to elliptical, very obtuse, 8x11 cm., abruptly contracted to a 
 stout petiole 15 mm. long. Spikes more or less clustered, rather long 
 
140 THE GENUS PHORADENDRON 
 
 (over 50 mm.), with about half a dozen ellipsoid joints some 14-flowered 
 in 4+2 series: sepals deep red, widely spreading at anthesis: peduncle 
 nearly 10 mm. long, sheathed by about 4 pairs of overlapping scales. 
 Fruit?. Plate 208. 
 
 Bolivian region. The type from Bolivia. 
 
 Specimens examined: BOLIVIA. Yungas (Bang, 632, 1890, the 
 type). Apolo, at 4800 ft. (Williams, 178). 
 
 PHORADENDRON PTERONEURON Eichler. 
 
 PTwradendron pteroneuron Eichler in v. Martius, Fl. Brazil, vol. 5. pt. 2. 
 p. 127. 1868. 
 
 Scarcely forked, the rather long branches with basal cataphyls only, 
 androgynous. Internodes moderate (2-5x30-100 mm.), nearly smooth, 
 from somewhat rhombic becoming 2-keeled and terete, more or less swol- 
 len at the nodes. Cataphyls a nearly basal pair, followed by 2-4 other 
 pairs at intervals increasing to 20 mm., subannular-bifid. Leaves round- 
 elliptical, 5-7x8 cm., or elliptical-obovate and scarcely 2.5x5 cm., very 
 obtuse, cuneately or abruptly petioled for some 10 mm. Spikes more or 
 less clustered, rather long (40-50 mm.), with about half a dozen ellip- 
 soidal joints some 14-flowered in 4-(-2 series : peduncle 5 mm. long, some- 
 times with several pairs of sheathing scales. Fruit (immature, said to 
 be whitish) subglobose, fleshy- wrinkled, 3 mm. in diameter: sepals dull 
 red, closely inflexed. Plate 209. 
 
 Brazilian region. The type from Rio de Janeiro. 
 
 Specimens examined : BRAZIL. Rio de Janeiro (Glaziou, 1462, 1887, 
 taken as type). Ilheos (Riedel, 1829). Mattogrosso (Robert, 439). 
 Ceara (Gardner, 1677). Pernambuco (Schenck, 4282). 
 
 II. SQUAMOSAE. 
 
 Leaves reduced to scales which do not disarticulate. Glabrous through- 
 out. Brazil. 
 
 Stem terete, fleshy and wrinkled. FBAGILES. 
 
 Stem very flat, striate. TUNAEFORMES. 
 
 47. FRAGILES. 
 
 Leaves reduced to small scales. Shoots terete. Cataphyls one or two 
 pairs, on the basal joint only. Flowers in 4-J-2 series. Fruit wrinkled, 
 with somewhat parted sepals. Brazil. 
 
 Internodes subcylindrical, very short. P. fragile. 
 
AEQUATOEIALES TUNAEFOEMES 141 
 
 PHORADENDRON FRAGILE (Urban). 
 Phoradendrum fragile Urban, Bot. Jahrb. v. 23. Beibl. 57. p. 13. 1897. 
 
 Scarcely forked, the rather short sometimes red branches with basal 
 cataphyls only, dioecious?. Internodes short (2-3x10-25 mm.), terete, 
 fleshy, more or less papillate. Cataphyls a single pair toward the base, 
 or two such pairs, blunt and widely spreading. Leaves minute, scale- 
 like. Spikes more or less clustered, moderate (20, becoming 30 mm. long), 
 with about 4 subglobose joints from very few-flowered to as much as 50- 
 flowered in 4+2 series : peduncle nearly suppressed : scales ciliate. Fruit 
 ellipsoidal, 4x5 mm., somewhat wrinkled but not verrucose: sepals in- 
 flexed but scarcely meeting. Plate 210. 
 
 Brazilian region ( ? exclusively) on Miconia and Melastomaceae. 
 The type from Rio de Janeiro. 
 
 Specimens examined: BRAZIL. Rio de Janeiro, (Glaziou, 10898, 
 the type). Ilha Grande, Rio de Janeiro (fRose & Russell, 20369). S. 
 Paulo (Glaziou, 11608). Goyaz (Glaziou, 22023). 
 
 48. TUNAEFORMES. 
 
 Leaves reduced to small scales. Shoots very thin and flat. Cataphyls 
 a single pair, on the basal joint only. Flowers in 4+2 series. Fruit 
 ovoid, granular, with parted sepals. Brazil. 
 
 Internodes elliptical-oblong. P. tunaeforme. 
 
 PHORADENDRON TUNAEFORME Eichler. 
 
 Phoradendron tunaeforme Eichler in v. Martius, Fl. Brazil, vol. 5. pt. 2. 
 
 p. 108. pi. 32. 1868. 
 Viscum tunaeforme de Candolle, Prodromus. vol. 4. p. 284. 1830. 
 
 More or less pseudodichotomous, the elongated branches with basal 
 cataphyls only, androgynous. Internodes short (1-5x20-30 mm.), greatly 
 flattened, slightly papillate, striately ribbed. Cataphyls a single nearly 
 basal pair, tubular-bifid. Leaves minute, scale-like. Spikes more or less 
 clustered, very short (5 mm.), usually of a single joint about 6-flowered 
 in 4+2 series : peduncle nearly suppressed : scales scarcely ciliate. Fruit 
 ovoid, 3x4 mm., granular: sepals parted. Plate 210. 
 
 Brazilian region. The type from Musquitos. 
 
 Specimens examined: BRAZIL. Serra de S. Feliz, Musquitos (PoTd, 
 1928, 1839, the type of V. tunaeforme, and of V. articulatum Pohl in 
 herb.). Piauhy (Gardner, 1958). Lagoa Santa (Warming, 17, 384). 
 Goyaz (Glaziou, 22024). Pernambuco (Schenck, 4238). Maracas, Bahia 
 (Ule, 6948). Bahia (v. Martius). Araraquara, S. Paulo (Lofgren, 1074). 
 Without locality (Vauthier). 
 
142 THE GENUS PHOEADENDJJUJS 
 
 E. PARADOXAE. 
 
 Cataphyls on alternate joints or in pne species on all joints, the 
 branches normally percurrent. Always glabrous and with foliage leaves. 
 Venezuela. 
 
 Cataphyls 2 or 3 deeply tubular pairs. FENDLERIANAE. 
 
 49. FENDLERIANAE. 
 
 Leaves moderate, rather thick and dull, somewhat obscurely basi- 
 nerved. Shoots nearly terete when with cataphyls or strongly ancipital 
 when without them. Cataphyls mostly 2 or 3 pairs, on all joints or in 
 one species on every alternate joint. Spikes moderate, usually with rath- 
 er large scales. Flowers in 6 series. Fruit round, smooth, with nearly 
 closed sepals. Venezuela and Guiana. 
 
 Cataphyls on all joints. P. Fendlerianum. 
 
 Cataphyls on alternate joints only. P. paradoxum. 
 
 PHORADENDRON FENDLERIANUM Eichler. 
 
 Phoradendron Fendlerianum Eichler in v. Martius, Fl. Brasil. vol. 5. 
 pt. 2. p. 129. 1868. 
 
 Scarcely forked, the rather long branches with cataphyls on all joints, 
 dioecious?. Internodes moderate (2-3x50-80 mm.), smooth, somewhat 
 compressed above. Cataphyls a nearly basal pair followed by a second 
 or even a third pair at intervals of 10-20 mm. or more, tubular. Leaves 
 round-ovate or elliptical, sometimes oblique, very obtuse or emarginate, 
 5-7x8-9 cm., rather abruptly petioled for some 10 mm. Spikes clustered, 
 rather long (50-60 mm.), with about 5 clavate joints scarcely 24-flowered 
 in 6 series when pistillate: peduncle some 10 mm. long, usually with 1 
 or 2 pairs of basal scales : scale-pairs forming rather deep truncate cups. 
 Fruit round, smooth, 4 mm. in diameter: sepals inflexed but slightly 
 parted. Plate 211. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1102, the 
 type). 
 
 PHORADENDRON PARADOXUM (Urban). 
 
 Phoradendrum paradoxum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 8. 
 1897. 
 
 Scarcely forked, the moderate branches with cataphyls on alternate 
 joints, dioecious?. Internodes rather long (2-7x50-90 mm.) and subterete 
 when with cataphyls, shorter (scarcely 50 mm.) and sharply ancipitally 
 flattened when lacking them, smooth. Cataphyls a pair some 5 mm. above 
 
AEQUATORIALES CONTINUAE 
 
 143 
 
 the base, and a second pair at about the middle of the joint, tubular. 
 Leaves round-ovate, very obtuse, 3-5x6-8 cm., rather abruptly petioled 
 for some 10-15 mm. Spikes mostly solitary, rather long (60 mm.), with 
 half a dozen oblong joints some 30- to 60-flowered in 6 series when stam- 
 inate : peduncle scarcely 5 mm. long : scale pairs forming rather slender 
 truncate cups. Fruit?. Plate 212. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Karsten, 5, the type). 
 
 Very like the preceding except in its internodes, and possibly repre- 
 senting its staminate form. 
 
 F. CONTINUAE. 
 
 Cataphyls on all joints, even when the stem is percurrent. Always 
 glabrous and with foliage leaves. Throughout the range of the Aequa- 
 toriales. 
 
 Stem always or prevailingly percurrent. . PERCURRENTES. 
 
 Stem cymose or dichotomous, rarely if ever percurrent. DICHOTOMAE. 
 
 III. PERCURRENTES. 
 Branches percurrent, even when frequently forked. 
 
 Cataphyls bearing flower-spikes in their axils.* CRASSIFOLIAE. 
 
 Cataphyls not subtending spikes. 
 Leaves penninerved. 
 
 Thick, dull, and opaque. PIPEROIDES. 
 
 Chartaceous, glossy and veiny. P. racemosum. 
 
 Leaves basinerved. 
 
 Large, fleshy, dimidiate. P. obliquum. 
 
 Moderate in size and thickness. 
 Equally nerved on both sides. 
 Cataphyls 1 pair. 
 Cataphyls 2 or 3 pairs. 
 Flowers in 2 ranks. 
 Flowers in 6 ranks. 
 
 Venulose above, heavy-nerved beneath. 
 Spikes many-flowered. 
 Spikes slender, few-flowered. 
 Very narrow, linear. 
 
 GARDNERIANAE. 
 
 P. Jenmani. 
 P. Fendlerianum. 
 
 FLAVENTES. 
 
 P. laxiflorum. 
 
 P. linearifolium. 
 
 *For comparable cases in other groups see P. craspedophyllum, and, as exceptions, 
 P. Eggersii, P. Glaziovii and P. Wattii. Flower-scars have been observed in the axils 
 of cataphyls in P. longipetiolatum. 
 
144 THE GENUS PHOEADENDRON 
 
 50. CRASSIFOLIAE. 
 
 Leaves large, ovate, thick, but rather heavily basinerved. Shoots te- 
 rete. Cataphyls on all joints, several pairs, of which the upper are 
 more or less deciduous and uniformly fertile. Flowers in 4+2 or 6 
 series. Fruit round, nearly smooth, with closed sepals. Brazil to Cen- 
 tral America and the West Indies. 
 
 Leaves very thick and dull : fruit yellowish. P. crassifolium. 
 
 Leaves thinner and glossier : fruit red. P. martinicense. 
 
 PHORADENDRON CRASSIFOLIUM Eichler. 
 
 PJioradendron crassifolium Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 125. pi. 40. 1868. 
 
 Viscum crassifolium Pohl in de Candolle, Prodromus. vol. 4. p. 280. 1830. 
 Phoradendron pepericarpum A. Gray, U. S. Explor. Exped. . . . Wilkes. 
 
 vol. 15. pt. 1, Botany, Phanerogamia. p. 742. 1854. 
 Phoradendrum crassifolium Urban, Bot. Jahrb. vol. 24. p. 51. 1897, 
 
 as to the mainland. 
 
 Occasionally pseudodichotomous, the branches with cataphyls on all 
 joints, androgynous. Internodes rather long (2-4x60-80 mm.), terete. 
 Cataphyls a sterile basal pair sometimes rather closely followed by 2 or 
 3 other sterile pairs, and about 3 floriferous pairs spaced along the other- 
 wise leafless joint, subannular. Leaves more or less lanceolately or ellip- 
 tically ovate, obtuse or blunt-pointed, 3x8 to 8-10x16 cm., rounded at 
 base or attenuate for 5-20 mm. Spikes sometimes terminal as well as 
 axillary and occasionally forming a compound terminal inflorescence 
 from the suppression of foliage near the summit, often clustered, mod- 
 erate (30 mm.), with about 5 round-fusiform joints scarcely 10-flowered 
 in 4+2 or 6 series : peduncle 5 mm. long, often with as many as 5 pairs 
 of crowded scales. Fruit (said to be yellowish) subglobose, slightly low- 
 granular, 4 mm. in diameter : sepals closely inflexed. Plates 213, 214. 
 
 Brazil to Central America, on Bertiera, Coffea, Macrocnemum, Mico- 
 nia, Rondeletia, Schinus, etc. The type from Brazil. 
 
 Specimens examined: BRAZIL. Serra d'Ourada (Pohl, 457, 1839, 
 the type of V. crassifolium; Luschnath; Claussen, 43; Sello, 5266). 
 Organ Mts. (Wilkes Exped., the type of P. pepericarpum). Rio de 
 Janeiro (Riedel; Glaziou, 1432-3, 1460, 4004 in part, 4005, 7666, 14884; 
 v. Martius; Wied-Neuwied; Peckolt, 624; Hieronymus & Niederlein, 
 1878; Ule, 4598, with nearly sessile leaves 3x5 cm.). S. Paulo (Burch- 
 ell, 3124, 3165; Lofgren, 799). Rio Negro (Spruce, 1563; v. Martius). 
 Lagoa Santa (Warming, 373). Sta. Catarina (Pabst, 554 in part; Ule, 
 179). Mattogrosso (Moore, 534). Campinas (de Campos Novaes, 417 
 in part). Piauhy (Gardner, 2620). Pernambuco (Gardner, 2881 
 
AEQUATORIALES PIPEROIDES 145 
 
 sometimes labeled as from Piauhy). Rio Colcoene, Para (Ducke, 2513). 
 Without locality (Guillemin, 43). BOLIVIA. Yungas (Rusby, 1387; Bang, 
 657). Mapiri (Rusby, as host of 1543). Tipuani, Guanai (Bang, 1717). 
 Tumupasa (Williams, 428, 594). PERU. La Merced (Weberbauer, I860). 
 Mayobamba (Martens, 1622 with leaves 9x16 cm., acuminately pro- 
 duced as in var. Pittieri) . VENEZUELA. Tovar (Fendler, 2396). With- 
 out locality. (Linden, 43). BRITISH GUIANA. (Jenman, 1217, 2533, 3628, 
 7433). 
 
 Two Bazilian forms, sufficiently characterized by their names, are var. 
 wultiflora Eichler, 1. c. p. 125, from Sabara, Minas Geraes (Riedel). San- 
 tarem, Para (Spruce, 732, 904), and Ega, Amazonas (Poeppig, 2859, 
 as Viscum egense MS.) PI. 214; and var. parvifolia Eichler, 1. c. p. 125, 
 from Capocabana, Minas Geraes (Luschnath, 1839). A Central Amer- 
 ican form characterized by its bluntly acuminate large leaves, may be 
 known as var. Pittieri: COSTA RICA. Buenos Aires (Pittier, 3902, 6580), 
 General (Pittier, 3901). Boruca (Tonduz, 6863 the type). BRITISH 
 HONDURAS. Toledo (Peck, 824). Plate 215. 
 
 Phoradendron martinicense n. comb. 
 Viscum martinicense de Candolle, Prodromus. vol. 4. p. 280. 1830. 
 
 Closely resembling P. crassifolium, with which it is commonly united, 
 but differing in its rather thinner glossier leaves and apparently red 
 fruit. Plate 216. 
 
 Caribbean region. The type from Martinique. 
 
 Specimens examined: CARIBBEES. MARTINIQUE (Sieber, 227, the 
 type of V. martinicense; Belanger, 130; Duss, 101 in part, 1374b; Hahn, 
 298). GUADELOUPE (Duss, 2969 in part, 3891, 3902 in part, 3904 in part, 
 4137a). TRINIDAD (Broadway, 2596). 
 
 51. PIPEROIDES. 
 
 Leaves moderate, broadly lanceolate or ovate, thick with a prominent 
 midrib and obscurely pinnately veined beneath. Shoots quickly terete. 
 Cataphyls on all joints, usually several pairs on the lowermost. Spikes 
 rather slender, red. Flowers in 4, 4+2 or 6 series. Fruit ellipsoid, rath- 
 er warty, with nearly closed sepals. South America to Mexico and the 
 West Indies. 
 
 Leaves lanceolate to ovate or elliptical. P. piperoides. 
 
 Phoradendron piperoides n. comb. 
 
 Viscum latifolium Swartz, Prod. Fl. Ind. Occ. vol. 1. p. 268. 1797, not 
 Lamarck. 
 
146 THE GENUS PHORADENDRON 
 
 Loranthus piperoides Iluinboldt, Bonpland & Kunth, Nov. Gen. Sp. vol. 
 
 3. p. 443. 1818. 
 
 L. torulosus Huniboldt, Bonpland & Kunth, I. c. 1818. 
 Viscum tereticaule and var. cubense de Candolle, Prodromus, vol. 4. p. 
 
 280. 1830. 
 
 V. saururoides de Candolle, I. c. 1830. 
 V. piperoides de Candolle, I. c. p. 281. 1830. 
 y. Schottii Pohl in de Candolle, I. c. p. 281. 1830. 
 V. Fockeanum Miquel, Linnaea. vol. 18. p. 60. 1844. 
 V. cornifolium Prcsl, Epimel. Bot. p. 254. 1849. 
 y. ellipticum Presl. I. c. 1849. 
 y. laurifolium Presl, I. c. p. 255. 1849. 
 Phoradendron Schottii A. Gray, U. S. P]xplor. Exped. . . . Wilkes. vol. 
 
 15. pt. 1, Botany, Phanerogamia. p. 742. 1854. 
 P. latifolium Grisebach, Fl. Br. W. I. p. 314. I860. Eichler in v. Mar- 
 
 tius, Fl. Brazil, vol. 5. pt. 2. p. 126. pi. 41, and most writers. 
 P. laurifolium Eichler, I. c. p. 107. 1868. 
 Viscum teretifolium Hemsley, Biol. Centr.-Amcr. vol. 3. p. 85. 1882, 
 
 name only, by error for tereticaule. 
 Phoradendron tereticaule Index Kewensis. vol. 3. p. 503. 1894, name 
 
 only. 
 
 P. Biolleyi Krause, Notizbl. K. Bot. Gart. Dahlem. vol. 5. p. 264. 1912. 
 Phoradendrum latifolium Urban, Bot. Jahrb. vol. 24. p. 49. 1897. 
 
 Rather frequently pseudodichotomous or forking, the branches with 
 cataphyls on all joints, androgynous. Internodes rather long (2-4x40-100 
 mm.), slightly compressed above, quickly becoming terete. Cataphyls 
 1 or 2-5 pairs toward the base of the lowest joint, a single pair nearly 
 basal or 10-15 mm. above the base of the other joints, subannular, white- 
 margined. Leaves lanceolate to round ovate, mucronately subacute or 
 bluntly acuminate, 1.5x5 to mostly 2.5-5x6-10 or occasionally 7x12 cm., 
 subpetioled for about 5 mm. Spikes mostly clustered, usually dull red, 
 rather long (30-60 mm.), with half a dozen rather slender joints some 
 10- to 15-flowered in 4, 4+2 or exceptionally 6 series : peduncle 2-3 mm. 
 long. Fruit yellow or orange, ovoid or ellipsoid, warty to smooth, 4x5 
 mm. : sepals ascending, usually somewhat parted. Plates 217, 218, 219, 
 220, 221, 222.. 
 
 Argentina to Mexico and the West Indies, in a multitude of forms, 
 on numerous dicotyledonous hosts. Should better knowledge of the plants 
 in nature render possible a segregation of these forms, the types already 
 named would center as follows: Antilles, y. latifolium, V. tereticaule, 
 and V. tereticaule cubense (PI. 221) ; Andes, L. piperoides and L. toru- 
 losus (PI. 220) ; Brazil, y. Schottii (PI. 217) ; Cayenne, y. saururoides 
 (PI. 221) and V. Fockeanum; Central America, P. Biolleyi; Mexico, V. 
 
AEQUATORIALE& PIPEROIDE8 147 
 
 cornifolium (PI. 222), V. ellipticum (PI. 222), and V. laurifolium (PI. 
 218). 
 
 Specimens examined: ANTILLES. CUBA (de la Ossa, the type of 
 V. tereticaule cubense; Baker, 2602; Britton, Cowell & Shafer, 12928; 
 Dewey, 644; Eggers, 4668, 4724, 4902; Linden, 1960; Maxon, 4337; Ru- 
 gel, 270; Shafer, 331, 3270, 8116, 8517, 8601, 8607, 8737; Underwood & 
 Earle, 1311; Van Hermann, 4887; Wright, 216=1251a, 217). JAMAICA 
 (Britton, 2687; Harris, 10339). SANTO DOMINGO (Wright, Parry & 
 Brummel, 46!)). HAITI (Christ, 2232; Nash and Taylor, 1251; Picarda, 
 1605). PUERTO Rico (Britton, Stevens & Hess, 2470, 4888; Hess, 1913; 
 Sintenis, 339, 339c, 1270, 1388, 4154, 4391, 4494, 4614, 4840). CARIBBEES. 
 GUADELOUPE (Duss, 2969 in part. DOMINICA (Ramage, 1888). MAR- 
 TINIQUE (Duss, 101 and 4418 in part). GRENADA (Broadway, 1021b, 1873; 
 (Eggers, 6077, 6396). ST. VINCENT (Smith, 245 in part, 248). TOBAQO 
 (Broadway, 3982). TRINIDAD (Crueger, 1649, 2724; Fendler, 654; Hart, 
 6118; Kuntze, 679; Lunt, 6118). CAYENNE REGION. BRITISH GUIANA 
 (Hostmann or Ilostmann & Kappler, 729 in part; Jenman, 650, 1218, 
 2221, 2545, 3781, 3868, 4747; Wullschlaegel, 991). SURINAM? (Schom- 
 burgk; Herb. Torrey. ex. herb. Schweinitz.) . FRENCH GUIANA (Gabriel, 
 1802; Mus. Paris, 198; Patris; Perrottet, 229, the type of V. sauru- 
 roides, 1820; Poiteau, 1819-1821, 1824; Sagot, 296). BRAZIL. Tingua 
 (Pohl, 246, 4319, 1828, the type of V. Schottii; Schott). Ceara (Gard- 
 ner, 1678). Nouvelle Fribourg (Claussen, 44-5). Piauhy (Gardner, 
 1960, sometimes labeled as from Ceara). Para (Sieber). Ilha Mexicana. 
 Para (Guedes, 2365). Ilha Marajo, Para (Ducke, 2530b). Alagoas 
 (Gardner, 1320). Blumenau (Vie, 850). Sta. Catarina (Holler; Pabst, 
 554 in part). S. Paulo (Noack). Puerto Alegro (Czermak & Reineck, 
 367). Serra de S. Ignacio (Niederlein, 171). Matto Grosso (Meyer, 720; 
 Robert, 522). Rio de Janeiro (Beyrich; Glaziou, 1428, 1431, 1435, 4008, 
 7661; Riedel; Schenck, 2132; Sello, 498; Vie, 4800; Weddell, 378). "East 
 Brazil" (Luschnath, 1835; Wied-Neuwied, 1829). Without locality 
 (Burchell, 3313; Claussen; Lund, 385; v. Seneloh, 259). PARAGUAY. 
 Asuncion (Balansa, 2498). Rio Tebicuari (Kuntze, 16). Cordillera de 
 Altos (Fiebrig,511 ; Hassler, 913). Paraguari (Balansa, 4722) . Tobaty 
 (Fiebrig, 51; Hassler, 6364). "South Paraguay" (Kuntze, 17). AR- 
 <;I:XTINA. Cordillera de Mesconas (Niederlein, 1277). PERU. Without 
 locality (Ruiz). ECUADOR. Bodega (Sodiro, 1872). Nanegal (Sodiro, 
 1874). Paloo (Eggers, 14340). Without locality (Eggers, 1 400; Sodiro, 
 148/28). COLOMBIA. Popayan (Bonpland, 1871, the type of L. pipe- 
 roides; Bonpland, 3808, the type of L. torulosus). Sta. Martha (Smith, 
 1278). VENEZUELA. Quique (Fendler, 112). PANAMA. Sabana de la 
 Tortuga, Chiriqui (Pittier, 3345). Caldera, Chiriqui (Pittier, 3357). 
 ChagreH (Fendler, 136). Mindi, (Hayes, 616). Bismarck (Williams, 
 
148 THE GENUS PHOEADEND8ON 
 
 255). COSTA RICA. San Mateo (Biolley, 7072; 7078, 1892,. the type of 
 P. Biolleyi). Buenos Aires (Pittier, 3903). Juis (Tonduz, 11458-9). 
 Without locality (Oersted, 3, 3086, in part). NICARAGUA. Bluefields 
 (Herb. Grisebach.). GUATEMALA. Patalul, Solola (Kellerman, 5822). 
 Torola, Escuintla (Smith, 2039). Cubilquitz, Alta Verazaz (v. Tuerck- 
 heim,8745). BRITISH HONDURAS. Toledo (Peck, 530). Manatee Lagoon 
 (Peck, 444). MEXICO. "Temperate East Mexico" (Leibold, the type of 
 V. laurifolium). Without locality (Haenke, the types of V. corni- 
 folium and V. ellipticum). Fortin (Kerber, 301). Orizaba to Cordoba 
 (Bourgeau, 1962,2175). Zacuapam (Purpus, 3693, 3806, 1912). El Mira- 
 dor (Sartorius; Galeotti, 2695; Liebmann). Motzorongo (J. G. Smith, 
 263). 
 
 The distinctly hexastichous forma hexasticha, which Urban, under 
 Phoradendrum, (Bot. Jahrb. vol. 23. Beibl. 57. p. 3. 1897) bases upon 
 Viscum cornifolium Presl (PL 222), is further represented from Mexico 
 (Smith, 263), and finds a counterpart in certain Ecuadorean specimens 
 (Sodiro, 1872, 1874, 148/28) . Ule's no. 4800, from about Rio de Janeiro, 
 presents the exceptional phenomenon in the genus of somewhat branched 
 spikes in some cases, and may be known as f . composita. 
 
 52. GARDNERIANAE. 
 
 Leaves rather small, more or less indistinctly basinerved. Shoots sub- 
 terete or variously compressed, sometimes very thin and flat. Cataphyls 
 a single basal pair on each joint. Flowers in 4 or 4+2 series. Fruit 
 ovoid, smooth, with parted sepals. South America. 
 
 Shoots subterete. 
 
 Leaves ovate, broad (2 cm.). P. Gardnerianum. 
 
 Leaves lanceolate, moderate (1.5 cm.). P. essequibense. 
 Leaves elliptical, moderate (1 cm.). 
 
 Shoots terete. . P. strongyloclados. 
 
 Shoots somewhat compressed. P. Johnstoni. 
 Leaves oblong, narrow (.5 cm.). 
 
 Leaves falcate. P. surinamense. 
 
 Leaves not falcate. P. Caesalpiniae. 
 
 Shoots flat, often greatly dilated. P. platycaulon. 
 
 PHORADENDRON GARDNERIANUM (Urban). 
 
 Phoradendrum Gardnerianum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 
 11. 1897. 
 
 More or less pseudodichotomous or cymosely forked, the moderate 
 branches with cataphyls on all joints, androgynous. Internodes mod- 
 erate (2-3x40-70 mm.), quickly terete. Cataphyls a single basal pair, or 
 
AEQUATORIALES GAEDNEEIANAE 149 
 
 this closely followed by a second on the lowermost joint, tubular-bifid, 
 white-margined. Leaves ovate, very obtuse, 2-2.5x3-4 cm., quickly nar- 
 rowed to the sessile base. Spikes mostly solitary, rather short (25 mm.), 
 with about 4 plump joints some 6-flowered in 4-}-2 series : peduncle very 
 short, sometimes followed by a partly sterile joint. Fruit (immature) 
 ovoid, smooth, 3 mm. in diameter : sepals ascending, nearly or quite meet- 
 ing. Plate 223. 
 
 Brazilian region. The type from Piauhy. 
 
 Specimens examined: BRAZIL. Piauhy (Gardner, 2885, the type). 
 
 Phoradendron essequibense n. sp. 
 
 Frequently forked, the moderate branches with cataphyls on all 
 joints, androgynous?. Cataphyls a single nearly basal pair, short-tubular, 
 bifid. Leaves lanceolate or ovate, mucronately obtuse or bluntly acumin- 
 ate to subacute, 1-1.5x4 cm., cuneately subsessile. Spikes solitary, short 
 (15 mm.), with about 3 clavate rather slender joints verticillately 4-flow- 
 ered: peduncle almost suppressed. Fruit?. Plate 223. 
 
 Cayenne region. The type from Demerara. 
 
 Specimens examined: BRITISH GUIANA (Jenman, 2252, Aug. 1886, 
 the type) . 
 
 PHORADENDRON STRONGYLOCLADOS Eichler. 
 
 Plioradendron strongyloclados Eichler in v. Martius, Fl. Brazil, vol. 5. 
 pt. 2. p. 109. 1868. 
 
 More or less pseudodichotomous or verticillate, or cymosely forked, 
 the moderate branches with cataphyls on all joints, androgynous. Inter- 
 nodes moderate (2x25-80 mm.), quickly terete. Cataphyls a single basal 
 pair, tubular-parted. Leaves elliptical, obtuse, about 1x2-3 or 4 cm., 
 cuneately sessile. Spikes more or less clustered, short (10-15 mm.), with 
 about 3 very short joints verticillately about 4-flowered: peduncle 
 scarcely 3 mm. long, usually with a basal pair of scales. Fruit ovoid, 
 3x4 mm., smooth, golden-glistening: sepals erect, widely parted. Plate 
 224. 
 
 Brazilian region. The type from Pernambuco. 
 
 Specimens examined: BRAZIL. Pernambuco (Gardner, 1029, the 
 type) . Goyaz ( Gardner, 3205) . 
 
 Phoradendron Johnston! n. sp. 
 
 Regularly forked, the moderate branches with cataphyls on all joints, 
 androgynous?. Internodes rather short (2-3x20-50 mm.), at first com- 
 pressed but the lower terete. Cataphyls a single nearly basal pair, short- 
 
150 THE GENUS PHORADENDRON 
 
 tubular or almost annular. Leaves elliptical, obtuse, .6-1x2-3 em., rather 
 abruptly sessile. Spikes solitary, short (scarcely 15 mm.), with 2 or 3 
 plump joints verticillately 4-flowered : peduncle almost suppressed. Fruit 
 ellipsoid, smooth, 4x5 mm. : sepals erect, parted. Plate 225. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Cocke Island (Johnston, 10, 
 Aug. 5, 1903, the type). 
 
 PHORADENDRON SURINAMENSE Pulle. 
 
 PTioradendron surinamense Pulle, Enum. Vase. PI. ... Surinam, p. 155. 
 pi. 1906. 
 
 More or less pseudodichotomous or divaricately cruciform, the mod- 
 erate branches with cataphyls on all joints, androgynous. Internodes 
 moderate (2x40-60 mm.), quickly terete. Cataphyls a single nearly basal 
 pair, short-tubular. Leaves somewhat f alcately oblong or lanceolate, ob- 
 tuse, .5x2.5-4.5 cm., sessile. Spikes mostly solitary, short (10 mm.), with 
 some 3 clavately thickened joints about 6-flowered in 4+2 series : pedun- 
 cle 2-3 mm. long, often with a basal pair of scales. Fruit?. Plate 226. 
 
 Cayenne region. The type from Surinam. 
 
 Specimens examined: SURINAM (Versteeg, 239, 1903, the type). 
 
 PHORADENDRON CAESALPINIAE Ule. 
 Phoradendron Caesalpiniae Ule, Bot. Jahrb. vol. 42. p. 200. 1908. 
 
 More or less pseudodichotomous or fascicled. The rather long 
 branches with cataphyls on all joints, androgynous. Internodes rather 
 long (2x50-100 mm.), varnished, terete. Cataphyls a single basal pair, 
 annular. Leaves narrowly elliptical-oblong, obtuse, .5x3 cm., sessile. 
 Spikes more or less clustered, short (15-20 mm.), with about 3 tumid 
 joints about 6-flowered in 4+2 series : peduncle about 3 mm. long, with 
 a basal pair of scales. Fruit (immature) ovoid, smooth, 3x4 mm. : sepals 
 erect, parted. Plate 225. 
 
 Brazilian region on Caesalpinia etc. The type from Bahia. 
 
 Specimens examined: BRAZIL. Calderao, Bahia (Ule, 7243, Oct. 
 1906, the type). 
 
 PHORADENDRON PLATYCAULON Eichler. 
 
 Plioradendron platycaulon Eiehler, in v. Martius, Fl. Brazil, vol. 5. pt. 2. 
 p. 108. pi. 33. 1868. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous. Internodes moderate (2x40-60 mm.), 
 flattened or dilated to a width of 5-8 mm. and striate. Leaves oblong 
 
AEQUATORIALES FLAVENTES 151 
 
 cr elliptical, mucronately very obtuse, .3-.5x3-4 cm., or .8x2 cm., quickly 
 subsessile. Spikes more or less clustered, short (15, becoming scarcely 25 
 mm.), with about 3 swollen joints verticillately 4- to 6-flowered: peduncle 
 scarcely 2 mm. long, sometimes with a basal pair of scales. Fruit red 
 or yellow, ovoid, smooth, 3x5 mm. : sepals erect, parted. Plate 227. 
 
 Brazilian region. The type from Para. 
 
 Specimens examined: BRAZIL. Barra, Rio Negro (Spruce, 1850-51; 
 Riedel; v. Martins}. Santarem, Para (Spruce, 1=226, 2=228, 1849-50, 
 the type). Rio de Janeiro (Glaziou, 13925a). CAYENNE. Without data 
 ( ?Herb. Mus. Paris.). 
 
 53. FLAVENTES. 
 
 Leaves rather large, lanceolate or ovate, usually sharply basinerved 
 and reticulate above, but heavy-nerved and veinless beneath. Shoots 2- 
 edged to nearly terete. Cataphyls on all joints, usually 2 or 3 pairs on 
 the lowermost and a single pair at some distance above the base on the 
 others, triangular, keeled and pointed. Flowers usually in 6 series. Fruit 
 rather ellipsoid, nearly smooth, with closed sepals. Central and South 
 America ; one species in the West Indies. 
 
 Flowers in 6 series. 
 
 Leaves dull and veinless : peduncles long. P. pachyphyllum. 
 
 Leaves glossy and reticulated above. 
 
 Peduncle rather long. P. Knoopii. 
 
 Peduncle short. 
 
 Leaves ovate-lanceolate. 
 
 Spikes very long, with elongated joints. 
 
 Leaves moderate (4x6 cm.). P. chrysocladon. 
 Leaves large (5x10 cm.). P. membranaceum. 
 Spikes with short joints. P. quinquenervium. 
 
 Leaves lanceolate. 
 
 Moderate, subsessile. 
 
 Shoots scarcely keeled. P. supravenulosum. 
 Shoots sharply 2-lined. P. flavens. 
 
 Large, more petioled. P. trisulcatum. 
 
 Flowers in about 8 (6-10) series. 
 
 Spikes relatively slender, short-stalked. P. Urbanianum. 
 
 Spikes very stout : peduncle elongated. P. Lindavianum. 
 
 Phoradendron pachyphyllum n. sp. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous?. Internodes moderate (3-5x60-80 mm.), 
 nearly smooth, 2-edged. Cataphyls a single pair 10-15 mm. above the 
 base, deltoid, keeled and pointed. Leaves round-elliptical, obtuse, 5-6x7-9 
 
152 THE GENUS PHOBADENDEON 
 
 cm., wing-petioled for 10 mm., 3- to 5-nerved, drying rather thick and 
 veinless. Spikes solitary, long (100 mm.), with about 5 elongated joints 
 some 40- to 60-flowered in 6 series: peduncle 10-15 mm. long, the lower 
 scales forming large funnel-shaped tubes. Fruit (very immature) ap- 
 parently round, nearly smooth : sepals inflexed. Plate 228. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Tovar (Fendler, 1103, 1103/3, 
 the type). 
 
 Phoradendron Knoopii Warburg n. sp. 
 
 Plioradendron Knoopii Warburg, Tropenpflanzer. vol. 9. p. 635. 1905, 
 name only. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous?. Internodes moderate (2-3x60-80 mm.), 
 granular, subterete. Cataphyls usually a nearly basal pair followed by a 
 second pair some 25 mm. higher on the lowest joint, solitary and 15-20 
 mm. above the base on the others, deltoid, keeled and pointed. Leaves 
 lanceolate to elliptical, mucronately obtuse to long-acuminate, 3-6.5x6-9 
 or 10 cm., wing-petioled for some 5-10 mm., 5-nerved, drying thin and 
 orange. Spikes mostly solitary, long (50 mm. or more), with some 4 
 oblong joints about 40-flowered in 6 series : peduncle about 5 mm. long. 
 Fruit yellow, round, nearly smooth, 3 mm. in diameter: sepals closely 
 inflexed. Plate 228. 
 
 Venezuelan region. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Caracas (Knoop, Hi &., 1905, 
 the type). 
 
 PHORADENDRON CHRYSOCLADON A. Gray. 
 
 Phoradendron chrysocladon A. Gray, U. S. Explor. Exped. . . . Wilkes. 
 
 vol. 15. pt. 1, Botany, Phanerogamia. p. 743. 1854. 
 P. flavum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. p. 106. 1868, 
 
 as to Brazil. 
 P. flavens Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. p. 116, for the 
 
 most part. 1868. 
 Phoradendrum reticulatum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 12. 
 
 1897. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, drying yellow, androgynous?. Internodes moderate 
 (2-5x40-80 mm.), minutely cellular-papillate, the upper ancipital or 2- 
 edged. Cataphyls a single pair about 5 mm. above the base, or several 
 on the lowermost joint, very short and broad, keeled and pointed. Leaves 
 round-ovate, acuminate and often recurved at tip, 3-4x5-7 cm., rather 
 abruptly wing-petioled for 5-10 mm. Spikes mostly solitary, moderate 
 to long (20-30, lengthening to 50-80 mm. in fruit), with 3-8 oblong joints 
 
AEQUATORIALES FLAVENTES 153 
 
 20- to 30-flowered in 4-f2 or 6 series : peduncle about 3 mm. long, often 
 followed by a sterile joint: scales forming rather large funnel-shaped 
 tubes. Fruit round-ovoid, nearly smooth, 4 mm. in diameter: sepals 
 closely innexed. Plates 229, 230. 
 
 Brazilian region ( ? exclusively) on Tapira. The type from Rio de 
 Janeiro. 
 
 Specimens examined : BRAZIL. Near Rio de Janeiro ( Wilkes Exped., 
 1838-42, the type; Riedel). Villa Nova, near Rio de Janeiro (Glaziou, 
 7664, May 1874, the type of P. reticulatum) . Bahia (Saltzmann, 302}. 
 
 Phoradendron membranaceum n. sp. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous?. Internodes moderate (2-3x50-80 mm.), 
 striate, terete. Cataphyls nearly basal, broadly triangular, keeled and 
 pointed. Leaves lanceolate to very broadly elliptical, acuminate at both 
 ends, 5-7.5x10-13 cm., subpetioled for about 10 mm., 5-nerved, drying 
 green and thin. Spikes mostly solitary, long (50, becoming 90 or 100 
 mm.), with half a dozen joints some 30-flowered in 6 series: peduncle 
 5 mm. long. Fruit (immature) subglobose, smooth, 3 mm. in diameter: 
 sepals closely indexed. Plate 231. 
 
 Andean region. The type from Ecuador. 
 
 Specimens examined: ECUADOR. S. Miguel (Sodiro, 148/18, 1883, 
 the type). Naneg (Sodiro, e). 
 
 PHORADENDRON QUINQUENERVIUM Krause. 
 
 Phoradendron quinquenervium Krause, Notizbl. K. Bot. Gart. Dahlem. 
 vol. 5. p. 264. 1912. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous?. Internodes moderate (2-5x40-60 mm.), 
 rather granular, somewhat hexagonal or 2-edged above. Cataphyls a 
 single pair, 5-10 mm. above the base, triangular, keeled and pointed. 
 Leaves elliptical or lance-ovate, abruptly short-acuminate, 3-3.5x6-7 cm., 
 abruptly subsessile. Spikes mostly solitary, rather long (40-60 mm.), 
 with about 10 short rounded joints some 24-flowered in 6 series : peduncle 
 almost suppressed. Fruit?. Plate 231. 
 
 Isthmian region. The type from Costa Rica. 
 
 Specimens examined: COSTA RICA. Juiz (Tonduz, 11457, Nov. 
 1897, the type). 
 
154 THE GENUS PHORADENDRON 
 
 Phoradendron supravemilosum n. sp. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous?. Internodes moderate (2-3x40-60 mm.), 
 somewhat granular, more or less hexagonally lined above. Cataphyls a 
 single pair, 5-10 mm. above the base, deltoid, keeled and pointed. Leaves 
 obliquely broadly lanceolate, more or less acuminately pointed, 3-6x9-12 
 cm., rather gradually subsessile, 5-nerved. Spikes mostly clustered, rather 
 long (40-70 mm.), with about 10 short joints covered by some 24-40 flow- 
 ers in 6 series: peduncle almost suppressed. Fruit (immature) appar- 
 ently to be elongated and somewhat granular : sepals closely inflexed. 
 Plate 232. 
 
 Guatemalan and Isthmian regions on Coffea, Piper, Siparuma, etc. 
 The type from Guatemala. 
 
 Specimens examined: GUATEMALA. Cubilquitz, Alta Verapaz (v. 
 Tuerckheim, 7967, 8574, Aug. 1903 the type). NICARAGUA. Chontales 
 (Tate,"129 (198)," 1867-8). COSTARICA. Tucurrique (Tonduz, 12749). 
 Without locality (Endres, 139). 
 
 PHORADENDRON FLAVENS Grisebach. 
 
 PTioradendron flavens Grisebach, Fl. Br. W. I. p. 313. 1860. 
 
 Viscum flavens Swartz, Prodr. Fl. Ind. Occ. p. 32. 1788. de Candolle, 
 
 Prodromus. vol. 4. p. 282. 
 
 V. macrophyllum Macfadyen, Fl. Jamaica, vol. 2. p. 195. 1850. 
 Phoradendrum flavens Urban, Bot. Jahrb. vol. 24. p. 50. 1897, as to 
 
 the Antilles. 
 
 More or less pseudodichotomous, the rather long branches with cata- 
 phyls on all joints, androgynous. Internodes moderate (3-5x40-80 mm.), 
 granular, 2-keeled with decussate rotation at the nodes and cataphyls. 
 Cataphyls 2 or 3 pairs on the lower third of the lowest joint, a single pair 
 some 10 mm. above the base of the others, broadly triangular, keeled and 
 pointed. Leaves more or less obliquely acuminate, 4-7x some 10-15 cm., 
 cuneately subpetioled, 5- to 7-nerved. Spikes more or less clustered, 
 rather long (20-35, lengthening to 60 mm.), with half a dozen rather 
 short joints some 24-flowered in 6 series: peduncle almost suppressed, 
 often followed by a sterile joint. Fruit yellow, ovoid, nearly smooth, 
 3x4 mm. : sepals closely inflexed. Plate 233. 
 
 Antillean region ( ? exclusively) on Guarea. The type from Jamaica. 
 
 Specimens examined: ANTILLES. JAMAICA. (McFadyen, the type 
 of V. macropyllum; Purdie; Harris, 6203; Britton, 180, 3968; Watt, 
 6219). 
 
AEQUATOEIALES FLAVENTES 155 
 
 Phoradendron flavens australe n. var. 
 
 Differing from the type, as pointed out by Urban (Bot. Jahrb. vol. 24. 
 p. 51.), in its 3- to 5-nerved leaves, nearly twice as numerous 12- to 20- 
 flowered spike-joints, and rounder white berries. 
 
 Caribbean region ( ? exclusively) on Inga. The type from St. Vin- 
 cent. 
 
 Specimens examined: CARIBBEES. DOMINICA (Imray, 216, 386; 
 Lloyd, 208; Eggers, 661, 946). ST. VINCENT (Eggers, 6746, the type; 
 Guilding; Smith, 374). GRENADA (Broadway, 1019; Eggers, 6398). 
 TRINIDAD (Crueger, 111, 2720; Hooker herb.). 
 
 Phoradendron trisulcatum n. sp. 
 
 More or less pseudodichotomous, the long branches with cataphyls on 
 all joints, androgynous?. Internodes long (2-5x100 mm. or more), gran- 
 ular, somewhat ancipital. Cataphyls a nearly basal pair followed at 
 some 30 mm. by a second on the lowest joint, a single pair 15-20 mm. 
 above the base of the others, very broad, keeled and pointed. Leaves 
 f alcately lanceolate to round-elliptical, acute at both ends, 4-9x14-16 cm., 
 wing-petioled for 10 mm., sulcately 3-nerved above. Spikes mostly soli- 
 tary, moderate (20-30 mm.), with 4-7 joints some 18-flowered in 4+2 
 series : peduncle nearly suppressed. Fruit?. Plate 234. 
 
 Andean region. The type from Ecuador. 
 
 Specimens examined: ECUADOR. Mt. Chimborazo, at 2500-3000 ft. 
 (Spruce, 6202, Aug. I860, the type). 
 
 PHORADENDRON URBANIANUM Ule. 
 
 Phoradendron Urbanianum Ule, Verhandl. Bot. Verein Prov. Branden- 
 burg, vol. 48. p. 157. 1906. 
 
 Scarcely forked, drying olive, the moderate branches with cataphyls 
 on all joints, dioecious?. Internodes moderate (2-4x40-60 mm.), some- 
 what granular, quickly terete, dilated below the nodes. Cataphyls a sin- 
 gle pair about 5 mm. above the base, deltoid, keeled and pointed. Leaves 
 elliptical-lanceolate, mucronately acuminate to obtuse, 5-7x8-13 cm., cu- 
 neately wing-petioled for about 10 mm. Spikes solitary, moderate (about 
 50 mm.), with about 4 oblong joints some 30-flowered in 6 series: pedun- 
 cle somewhat granular, 3x4 mm. Fruit?. Plate 234. 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Cerro de Escaler (Ule, 6681, the 
 type). 
 
 PHORADENDRON LINDAVIANUM Patschovsky. 
 
 Phoradendron Lindavianum Patschovsky, Bot. Jahrb. vol. 45. p. 438. 
 1911. 
 
16 THE GENUS PHOEADENDEON 
 
 Scarcely forked, drying golden yellow, the long thick branches with 
 cataphyls on all joints, dioecious. Internodes long (3-8x100-125 mm.), 
 granular, somewhat hexagonally flattened, dilated below the nodes. Cata- 
 phyls a single pair, about 10 mm. above the base, deltoid, keeled and 
 pointed. Leaves elliptical-ovate, more or less mucroiiately obtuse to 
 emarginate, 4x9 to 10x15 cm., cuneately wing-petioled for 10 mm. Spikes 
 solitary, very long (60 to over 100 mm.), with about 4 thick cylindrical 
 joints often over 100-flowered in about 8 (6-10) series: peduncle gran- 
 ular, 5-10 mm. long. Fruit (immature) elongated, nearly smooth, 3x5 
 mm. : sepals closely inflexed. Plate 235. 
 
 Andean region ( ? exclusively) on Aralia. The type from Peru. 
 
 Specimens examined : PERU. Catani, between Sandia and Chunchus- 
 mayo (Weberbauer, 1288, July 25, 1902, the type). Cucharo (Poep- 
 pig, 1829-30, in the Vienna herbarium) . 
 
 IV. DICHOTOMAE. 
 
 Normally forking at every node, the branches therefore not percur- 
 rent though sometimes ending in a flower-spike. 
 
 Leaves basinerved. 
 
 Venulose above, obscurely nerved beneath. HUALLAGENSES. 
 
 Equally nerved and veiny on both sides, or opaque. 
 
 Small. GARDNERIANAE. 
 
 Moderate or large. 
 
 Coriaceous or moderately thin. 
 
 With terminal spikes in the forks. CYMOSAE. 
 
 Not cymose. P. Jenmani. 
 
 Very large and thick, dimidiate. P. obliquum. 
 
 Leaves penninerved. 
 Thick and flat. 
 
 Obscurely nerved. P. Norfhropiae. 
 
 Evanescently heavy-nerved. P. Eggersii. 
 
 Chartaceous, veiny, often revolute. P. racemosum. 
 
 54. HUALLAGENSES. 
 
 Leaves moderate, acuminately ovate-lanceolate, drying rather thin 
 with the lower surface smooth but heavily basinerved and the upper re- 
 ticulately veiny and more or less venulose. Shoots terete. Cataphyls 
 typically a single pair, nearly basal on all joints, the branches being 
 sometimes percurrent, and sometimes cymosely dichotomous, and rarely 
 without cataphyls on some joints. Flowers in 2 or 4 series. Fruit ovoid, 
 rather rough, with nearly closed sepals. South America. 
 
 Spikes short (20-30 mm.), with short joints. P. Tiuallagense. 
 
 Spikes long (50 mm.), with long joints. P. laxiflorum. 
 
AEQUATOBIALES CYMOSAE 157 
 
 PHORADENDRON HUALLAGENSE Ule. 
 
 Phoradendron Tiuallagense Ule, Verhandl. Bot. Verein Prov. Branden- 
 burg, vol. 48. p. 158. 1906. 
 
 Cymosely dichotomous, the moderately long slender branches there- 
 fore with cataphyls on all joints, dioecious?. Internodes moderate (2x 
 40-60 mm.), striate rather than granular, nearly terete but somewhat 
 dilated below the nodes. Cataphyls a single nearly basal pair, triangular, 
 pointed. Leaves ovate-lanceolate, mucronately acuminate to very obtuse, 
 2-2.5x5-6 cm., cuneately subsessile. Spikes solitary, short (10, scarcely 
 lengthening to 30 mm.), with about 4 short joints 4-flowered about the 
 middle when pistillate; peduncle scarcely 2 mm. long. Fruit white, 
 elongated, granular-roughened, 2x4 mm. : sepals erect, somewhat parted. 
 Plate 237. 
 
 Andean region. The type from Peru. 
 
 Specimens examined: PERU. Huallaga, Loreto (Ule, 6664, the 
 type) . 
 
 PHORADENDRON LAXIFLORUM Ule. 
 
 Phoradendron laxiflorum Ule, Verhandl. Bot. Verein Prov. Brandenburg, 
 vol. 48. p. 158. 1906. 
 
 More or less pseudodichotomous or exceptionally cymosely forked, the 
 long slender branches with varying cataphyls, dioecious?. Internodes 
 rather long (2x30-70 mm.), granular, nearly terete but somewhat dilated 
 below the nodes. Cataphyls typically a single nearly basal pair, excep- 
 tionally 3 pairs, and on one shoot absent from two internodes, triangular, 
 keeled and pointed. Leaves ovate-lanceolate, aristately acuminate, 2.5-3x 
 5-7 cm., rather abruptly wing-petioled for scarcely 5 mm. Spikes soli- 
 tary, rather long (25, lengthening to 40-50 mm.), with about 5 very slen- 
 der joints some 10 mm. long 2-flowered near the top when pistillate: 
 peduncle some 3 mm. long, with a pair of scales toward the base. Fruit 
 (immature) subellipsoid, nearly smooth, 3x5 mm. : sepals erect, nearly 
 meeting. Plate 236. 
 
 Brazilian region. The type from Amazonas. 
 
 Specimens examined: BRAZIL. Sta. Clara, Jurua, Amazonas (Ule, 
 5251, Oct. 1900, the type) . 
 
 55. CYMOSAE. 
 
 Leaves often comparatively large, drying thin and distinctly pal- 
 mately fine-nerved. Shoots ancipital or terete. Branching cymosely 
 dichotomous, each internode being succeeded by a spike and 2 axillary 
 branches, so that all joints are really basal and hence with 1 or usually 2 
 pairs of cataphyls. Flowers mostly in 6 series. Fruit round, nearly 
 
158 THE GENUS PHORADENDKON 
 
 smooth, with closed sepals. South America, the Galapagos Islands, and 
 the West Indies. 
 
 Spikes slender: leaves broadly lanceolate. P. dichotomum. 
 
 Spikes moderate. 
 
 Leaves broad (1 :2) . 
 Eound-obovate. 
 
 Spike- joints turbinate. P. cymosum. 
 
 Spike-joints oblong. P. galapageium. 
 
 Broadly lanceolate or ovate. P. Henslovii. 
 
 Leaves elongated (1 :5). P. uncinatum. 
 
 Spikes stout. 
 
 Leaves elongated. 
 
 Lanceolate. P. campinense. 
 
 Lance-oblong, thick. P. Holtonis. 
 
 Leaves orbicular. P. Lindeni. 
 
 PHOEADENDRON DICHOTOMUM (Krug & Urban). 
 
 Viscum dichotomum Bertero in Sprengel, Syst. vol. 1. p. 488. 1825. 
 Viscum Berterianum de Candolle, Prodromus. vol. 4. p. 281. 1830. 
 PTioradendron Berterianum Eichler in v. Martius, Fl. Brasil. vol. 5. pt. 2. 
 
 p. 127. 1868. 
 
 P. Giordanae Warburg, Tropenpflanzer. vol. 9. p. 635. 1905, name only. 
 Phoradendrum dichotomum Krug & Urban, Bot. Jahrb. vol. 24. p. 48. 
 
 1897. 
 
 Forked at every node, sometimes with a terminal spike, the rather 
 long slender branches therefore with cataphyls on all joints, androgy- 
 nous. Internodes rather long (1-3x30-80 mm.), the upper transiently 
 more or less rhombically compressed. Cataphyls a nearly basal pair fol- 
 lowed at 10-20 mm. by a second, exceptionally a third pair interposed, 
 not tubular, acute, white-margined. Leaves lanceolate, mucronately sub- 
 acute, 2-3x6-9 or even 5x12 cm., euneately subpetioled for scarcely 5 mm. 
 Spikes mostly solitary, long (40-75 mm.), with about 4 slender joints 
 some 18- to 40-flowered in 4-(-2 series : peduncle 2 mm. long, followed by 
 a sterile joint : scales scarcely ciliate. Fruit white, round, nearly smooth, 
 4 mm. in diameter: sepals inflexed. Plates 237, 238, 239. 
 
 Antillean region on Mangifera, Petitia, Trichttia, etc. The type 
 from Santo Domingo. 
 
 Specimens examined: ANTILLES. CUBA (Wright, 216, 437, 1251; 
 Shafer, 8817}. PUERTO Kico (Sintenis, 23451), 2348, 3058, 4288, 6114, 
 6419). HAITI (Buch, 454; Christ, 2096; Picarda, 215; Nash, 633; Nash 
 & Taylor, 1151}. STO. DOMINGO (Bertero, 710, the type of V. dichoto- 
 mum, from Sprengel in the Presl herbarium ; Bertero, 1821, the type of 
 V. Berterianum; Poiteau, 617, 1802 ; Wright, Parry & Brummel, 464}. 
 
AEQUATORIALES CYMOSAE 159 
 
 An extreme with round-ovate leaves 5-6x7-10 cm., is var. ovatifolia, 
 Phoradendrum dickotomum ovatifolium, Krug & Urban, 1. c. p. 49, from 
 Sto. Domingo (Eggers, 1845). Plate 239. 
 
 PHORADENDRON CYMOSUM (Urban). 
 Phoradendrum cymosum Urban, Bot. Jahrb. vol. 23. Beibl. 57. p. 7. 1897. 
 
 Cymosely dichotomous, the moderate branches therefore with cata- 
 phyls on all joints, androgynous. Internodes moderate (2-3x40-60 mm.), 
 the upper transiently more or less rhombically compressed. Cataphyls a 
 nearly basal pair, often followed at some 20 mm. by a second pair, some- 
 what tubular, white-margined. Leaves round-elliptical, obtuse or sub- 
 emarginate, 2-3.5x4-6 cm., gradually subpetiolately contracted for about 
 5 mm. Spikes mostly solitary, moderate (30, becoming 60 mm. in fruit), 
 with half a dozen fusiform joints rather turbinately some 30-flowered in 
 4+2 or 6 series : peduncle 3 mm. long : scales scarcely ciliate. Fruit (im- 
 mature) white, subglobose, slightly low-granular, 3-4 mm. in diameter: 
 sepals inflexed. Plate 240. 
 
 Venezuelan region on Persea etc. The type from Venezuela. 
 
 Specimens examined: VENEZUELA. Caracas (Gollmer, Jan. 1856, 
 the type). 
 
 PHORADENDRON GALAPAGEIUM Robinson. 
 
 PJioradendron galapageium Robinson, Proc. Amer. Acad. vol. 38. p. 133. 
 
 1902. 
 Viscum galapageium Hooker f., Trans. Linn. Soc. vol. 20. p. 216. 1845. 
 
 Cymosely dichotomous, the moderate branches therefore with cata- 
 phyls on all joints, androgynous?. Internodes rather long (2-3x50-100 
 mm.) , nearly terete. Cataphyls a nearly basal pair followed at 5-35 mm. 
 by a second pair, scarcely tubular, white-margined. Leaves obovate to 
 sublanceolate, mucronate, very obtuse to subacute, 1.5-3x3-4 cm., cune- 
 ately subpetioled for about 5 mm. Spikes (immature) rather short 
 (25-30 mm.), with about 5 short plump joints some 20-flowered in 4+2 
 or 6 series: peduncle scarcely 2 mm. long. Fruit?. Plate 241. 
 
 Galapageian region. The type from Chatham Island. 
 
 Not seen in any recognizable specimens, the description based on the 
 original account and the photograph of the type here reproduced. 
 
 PHORADENDRON HENSLOVH Robinson. 
 
 PJioradendron Henslovii Robinson, Proc. Amer. Acad. vol. 38. p. 133. 
 
 1902. 
 Viscum Henslovii Hooker f., Trans. Linn. Soc. vol. 20. p. 216. 1845. 
 
160 THE GENUS PHOEADENDEON 
 
 fV. florianum Andersson, Handl. Akad. Stockholm. 1853. p. 92. 
 fP. florianum Kobinson, I. c. 1902. 
 
 Cymosely dichotomous, the moderate branches therefore with cata- 
 phyls on all joints, androgynous?. Internodes rather long (2-3x50-80 or 
 150 mm.), nearly terete. Cataphyls a nearly basal pair followed at 5-15 
 or even 30 or 40 mm. by a second pair, scarcely tubular, white-margined. 
 Leaves ovate to broadly lanceolate, mucronate, very obtuse to subacute, 
 2.5-4x4-10 cm., rather abruptly petioled for 5 mm. Spikes more or less 
 clustered, long (50-70 mm.), with some half-dozen fusiform joints turbi- 
 nately about 30-flowered in 4-f-2 or 6 series: peduncle scarcely 5 mm. 
 long. Fruit (immature) subglobose, somewhat low-granular, 3 mm. in 
 diameter : sepals inflexed. Plates 242, 243. 
 
 Galapageian region. The type from Charles Island. 
 
 Specimens examined : GALAPAGOS ISLANDS. CHATHAM (Steindachner, 
 67; Bauer, 286). ABINGDON (Snodgrass & Heller, 825). ALBEMARLE 
 (Snodgrass & Heller, 40, 228). INDEFATIGABLE (Habel, 1860). 
 
 PHORADENDRON UNCINATUM Robinson. 
 
 Phoradendron uncinatum Robinson, Proc. Amer. Acad. vol. 38. p. 134. 
 pi. 1. 1902. 
 
 Cymosely dichotomous, the elongated branches with cataphyls on all 
 joints, androgynous?. Internodes rather long (2-3x50-80 mm.), essen- 
 tially terete. Cataphyls a pair nearly basal or as much as 10 mm. above 
 the base, often followed by a second pair some 30 mm. higher, scarcely 
 tubular and but little scarious. Leaves lanceolate, acute, 1-1.5x6-7 cm., 
 cuneately subpetioled for about 5 mm., (normally?) hooked at apex. 
 Spikes mostly solitary, long (70-80 mm.), with about 7 slightly fusiform 
 joints turbinately some 30-flowered in 4+2 or 6 series : peduncle 2 mm. 
 long: scales scarcely ciliate. Fruit (immature) subglobose, nearly 
 smooth, 3 mm. in diameter : sepals inflexed. Plate 243. 
 
 Galapageian region. The type from South Narborough Island. 
 
 Specimens examined : GALAPAGOS ISLANDS. SOUTH NARBOROUGH, at 
 1000-2000 ft. altitude (Snodgrass & Heller, 325, Apr. 1899, the type). 
 
 Phoradendron campinense n. sp. 
 
 Cymosely dichotomous, the elongated branches therefore with cata- 
 phyls on all joints, androgynous?. Internodes long (2-3x70-100 mm.), 
 quickly terete. Cataphyls a nearly basal pair followed by a second pair 
 some 15-25 mm. higher, tubular-bifid, rather blunt and white-margined. 
 Leaves somewhat falcately or dimidiately lanceolate, acute, 1.5-2.5x6-10 
 cm., involutely contracted for scarcely 5 mm. rather than petioled, thick 
 and indistinctly nerved. Spikes more or less clustered, very long (at 
 
AEQUATORIALES CYMOSAE 161 
 
 length 100 mm.), with some 7 stout oblong joints about 50-flowered in 
 6 series : peduncle 5 mm. long, usually with a basal pair of scales. Fruit 
 (immature) subglobose: sepals inflexed. Plate 244. 
 
 Brazilian region. The type from Campinas. 
 
 Specimens examined: BRAZIL. Campinas (de Campos Novaes, 417 
 in part, the type). 
 
 Phoradendron Holtonis n. sp. 
 
 Cymosely dichotomous, the rather elongated branches therefore with 
 cataphyls on all joints, androgynous?. Internodes rather long (2-4x 
 CO-100 mm.), at first rhombic. Cataphyls a nearly basal pair followed 
 by a second pair 20-25 mm. higher, tubular, blunt and somewhat white- 
 margined. Leaves somewhat falcately lanceolate, obtuse, 2.5-3x8 cm., 
 involutely subsessile. Spikes mostly solitary, very long (60-100 mm.), 
 with some 4 fusiformly thickened joints turbinately 40- to 50-flowered 
 in 6 series: peduncle 3 mm. long. Fruit (immature) subglobose, nearly 
 smooth, 4 mm. in diameter : sepals inflexed. Plate 244. 
 
 Andean region. The type from Colombia. 
 
 Specimens examined : COLOMBIA. Fusagasuga (/. F. Holton, 655, 
 the type, and probably also 654). 
 
 Phoradendron Lindeni n. sp. 
 
 Cymosely dichotomous, the rather long slender branches therefore 
 with cataphyls on all joints, androgynous?. Internodes long (2-3x50-100 
 mm.), quickly terete. Cataphyls a single nearly basal pair, scarcely 
 tubular, acute, white-margined. Leaves orbicular to obovate, obtuse or 
 einarginate, about 5x6 cm., abruptly narrowed to a petiole 3 mm. long. 
 Spikes mostly solitary, rather long (60 mm. or more), with 4 or 5 stout 
 cylindrical joints some 50-flowered in about 8 series : peduncle 3-4 mm. 
 long. Fruit?. Plate 245. 
 
 Andean region ( ? exclusively) on Capparis. The type from Colom- 
 bia. 
 
 Specimens examined: COLOMBIA. Espinal. Valley of the Magda- 
 lena (Linden, 846, Dec. 1842, the type). 
 
EXPLANATION OF PLATES 
 
 All of the figures, unless otherwise noted, are from herbarium ma- 
 terial, photographed in natural size by the author. Though it has not 
 been possible always to do so, an effort has been made to include in 
 each illustration the lower part of a basal internode so as to show the 
 presence or absence of cataphyls; and except for types of the older 
 species a representative specimen rather than a perfect one has been se- 
 lected for the photograph when possible. The upper figure of a plate 
 is designated by "a," and the lower by "6." Where no indication 
 is given, it is to be understood that the material figured is at the Mis- 
 souri Botenical Garden in St. Louis, or at the University of Illinois in 
 Urbana, the facilities of these institutions having been the main re- 
 source of the author in the preparation of manuscript. 
 
 FRONTISPIECE. DISTRIBUTION MAP, showing the principal regions 
 indicated by the genus PJioradendron. 
 
 North America: (1) Atlantic region, approximately that drained 
 by the Mississippi river and the eastern streams, occupied by PJiora- 
 dendron only south of the Ohio and Missouri rivers ; (2) Kocky Moun- 
 tain region, occupied by Phoradendron only in its southern part which 
 is scarcely more than a northern Chihuahuan extension; (3) Calif or- 
 nian region, reaching Oregon; (4) Sonoran or desert region, essen- 
 tially the valley of the lower Colorado river with the coasts and islands 
 of the gulf of Baja California; (5) Chihuahuan region, connecting 
 the Rocky Mountains with the eastern and western Sierra Madre 
 ranges of Mexico; (6) Mexican table-land, lying between the Sierra 
 Madre ranges and passing into the southern Chihuahuan region; (7) 
 Sierra Madre ranges, confluent into (8) the Cordilleran or Guatemalan 
 region, which itself passes into (9) the Isthmian or Costa Rican re- 
 gion, reaching from Costa Rica into coastwise Venezuela; (10) Yuca- 
 tecan region. 
 
 South America : (11) Andean region, of great extent in the moun- 
 tains, meeting the Isthmian region in Venezuela; (12) Bolivian re- 
 gion, comprising the uplands of southwestern Bolivia and northwest- 
 ern Argentina; (13) La Plata region, no Phoradendron known from 
 south of Uruguay; (14) Brazilian upland or southern Brazilian re- 
 gion, limited in general by the valleys of the Amazon and Paraguay 
 rivers; (15) Amazonian region; (16) Cayenne region, lying between 
 
 163 
 
164 THE GENUS PHORADENDRON 
 
 the drainage of the Orinoco and Amazon rivers; (17) Orinocan re- 
 gion, like the Amazonian appearing as a barrier to distribution rather 
 than a distributional region for Phoradendron; (18) Venezuelan re- 
 gion, a meeting point of the Isthmian, Andean and Caribbean regions ; 
 (19) Galapageian region, essentially an oceanic extension of the Vene- 
 zuelan and Andean regions. 
 
 West Indies: (20) Caribbean region, as far north as the Anegada 
 passage; (21) Antillean region; (22) Bahamian region, in Phoraden- 
 dron showing absolute isolation from the adjacent Atlantic region of 
 Florida. 
 
 Plate 1. HABIT. Phoradendron villosum, on Quercus. Photo- 
 graphed in California by George E. Nichols. Greatly reduced. 
 
 Plate 2. HABIT. Plioradendron Libocedri, on Libocedrus, at the 
 entrance to the Yosemite valley, California. Photographed by George 
 D. Fuller. P. juniperinum, on Juniperus, at the rim of the grand 
 canon, Arizona. Photographed by Charles F. Hottes. Both greatly 
 reduced. 
 
 Plate 3. MORPHOLOGY of foliage in the Aphyllae. a. Phoradendron 
 juniperinum, with scales not constricted at the base (Wright), b. P. 
 ligatum, with scales constricted at the base (Oregon, Cusick, the 
 type) . x 10. 
 
 Plate 4. MORPHOLOGY of the Aphyllae. Plioradendron juniperinum, 
 showing scale-like leaves, fruiting spikes each of a single 2-flowered 
 joint, and globose berry-like fruit with parted sepals (Arizona, Grif- 
 fiths, from fresh material), x 5. 
 
 Plate 5. MORPHOLOGY of spikes in the Flavescentes. 
 
 a. Staminate spikes of (from left to right) Plioradendron flaves- 
 cens (Missouri, Eggert), P. flavescens orbiculaium (northern Texas, 
 Bush), P. macrotomum (Florida, Curtiss), P. Engelmanni (southern 
 Texas, Lindheimer), P. Engelmanni Claviger (southern Texas, Tre- 
 lease), P. villosum (Oregon, Engelmann), P. Cocker ellii, (New Mex- 
 ico, Metcalfe), P. macrophyllum (Arizona, Gilbert), and P. Coryae 
 (Arizona, Blumer). Allx3. 
 
 b. Pistillate spikes of (from left to right) Phoradendron flaves- 
 cens (Virginia?, Curtiss), P. macrotomum (Florida, Curtiss,), P. En- 
 gelmanni (southern Texas, Lindheimer), P. villosum, in fruit (Oregon, 
 Howell), P. Cocker ellii (New Mexico, Metcalfe), P. macrophyllum 
 (Arizona, Blumer}, and P. Coryae (Arizona, Thornber). All x 3. 
 
EXPLANATION OF PLATES 165 
 
 Plate 6. MORPHOLOGY of spikes, a. Phoradendron Libocedri, one 
 of the Pauciflorae, showing an entire 1-jointed 2-flowered spike, with 
 parted fruiting sepals, b. Plwradendron villosum, one of the Pluri- 
 seriales, showing one joint of a 3- jointed spike with flowers in several 
 series, with parted fruiting sepals. Both in fruit, and x 10. 
 
 Plate 7. MORPHOLOGY of flowers, a. Phoradendron macrophyl- 
 lum, a joint of a staminate spike with 2- and 3-merous flowers (Ari- 
 zona, Blumer). b. P. villosum, an entire pistillate spike with 3- and 
 5-merous flowers (California, Hedgcock). c. P. macrophyllum, a 
 joint of a staminate spike showing 3-, 4- and 5-merous flowers (Ari- 
 zona, Blumer) . All x 10. 
 
 Plate 8. FRUITING CALYX with inflexed sepals, a. Phoradendron 
 californicum (Arizona, Miss Cory), b. P. nervosum (Mexico, Pur- 
 pus). Both x 10. 
 
 Plate 9. FRUITING CALYX with parted sepals, a. Phoradendron 
 macrophyllum (Arizona, Blumer). b. P. Zuloagae (Venezuela, Zu- 
 loaga). c. P. Coryae (Arizona, Miss Cory). All x 10. 
 
 Plate 10. ENDOCARP. a. Phoradendron Coryae (Arizona, Miss 
 Cory), b. P. villosum (California, Butler), c. P. macrophyllum 
 (Arizona, Blumer). All x 10. 
 
 Plate 11. PHORADENDRON CALIFORNICUM. a. Four bits of the type 
 (Sierra Nevada, Nuttall, 1836) ; Sonora (Palmer, 1065). b. Fruiting 
 plant (California, Jones, 11718). 
 
 Plate 12. PHORADENDRON CALIFORNICUM NANUM. Type (Arizona, 
 Griffiths and Thornber, 205). 
 
 Plate 13. PHORADENDRON CALIFORNICUM DISTANS. a. The type 
 (Arizona, Pringle, 1881). b. Fruiting branch (Nevada, Kennedy and 
 Goodding, 57). 
 
 Plate 14. PHORADENDRON JUNIPERINUM. a. The type (New Mexico, 
 Fendler, 281). b. Type of f. NANA (Arizona, Sitgreaves, 1851). 
 
 Plate 15. a. PHORADENDRON LIBOCEDRI. Type (California, Lem- 
 mon, 1875). b. P. LIGATUM. Oregon (Cusick, 2637). 
 
 Plate 16. a. PHORADENDRON MINUTIFOLIUM. Type (Mexico, Schiede, 
 402) ; photographed by permission at Dahlem. b. P. SALTILLENSE. 
 Type (Mexico, Gregg, 399). 
 
 Plate 17. PHORADENDRON CAPITELLATUM. Type (New Mexico, 
 Wright, 1787) ; photographed by permission at the New York Botan- 
 ical Garden. 
 
166 THE GENUS PHORADENDRON 
 
 Plate 18. PHORADENDRON TEQUILENSE. Type : a, pistillate ; b, stam- 
 inate (Mexico, Pringle, 4434). 
 
 Plate 19. PHORADENDRON BOLLEANUM. a. Fragment of type (Mex- 
 ico, Seemanri) , and branch of collection by Pringle, no. 256, of which 
 other specimens are shown in b. 
 
 Plate 20. PHORADENDRON DENSUM. a. Type ( California, Wilkes Ex- 
 pedition, 1567) ; photographed by permission at the New York Bo- 
 tanical Garden, b. An Oregon specimen (Cusick, 2260). 
 
 Plate 21. PHORADENDRON DENSUM PARISHII. Type (California, 
 Parish, 899). 
 
 Plate 22. a. PHORADENDRON PAUCIPLORUM. Type (California, 
 Bigelow, 2) ; photographed by permission at the New York Botanical 
 Garden, b. P. GUADALUPENSE. Type number (Guadalupe Island, Pal- 
 mer, 85) ; photographed by permission in the Boissier herbarium. 
 
 Plate 23. PHORADENDRON GUADALUPENSE. Type (Guadalupe Island, 
 Palmer, 85) . 
 
 Plate 24. PHORADENDRON FLAVESCENS. a. Staminate shoot (Mis- 
 souri, Eggert). b. Pistillate shoots, bearing flowers of the present sea- 
 son and mature fruit from flowers of the previous autumn (Fresh ma- 
 terial from North Carolina, Coker, 1911). 
 
 Plate 25. PHORADENDRON FLAVESCENS. Two pistillate specimens. 
 a. Viscum purpureum of Willdenow, but not of Linnaeus (Pennsyl- 
 vania, Muhleriberg, 639, as no. 18295 in the Willdenow herbarium) ; 
 photographed by permission at Dahlem. b. Viscum serotinum Rafin- 
 esque (Arkansas, Rafinesque) ; photographed by permission in the 
 Delessert herbarium at Geneva. 
 
 Plate 26. PHORADENDRON FLAVESCENS ORBICULATUM. a. A stam- 
 inate shoot (Texas, Bush, 1160). b. Pistillate specimens with flowers 
 and ripened fruit (Fresh material from Arkansas, von Schrenk, 1912). 
 
 Plate 27. PHORADENDRON MACROTOMUM. Staminate and pistillate 
 flowering shoots, and mature fruit from flowers of the previous season 
 (Fresh material from Florida, Schnabel, 1911). 
 
 Plate 28. PHORADENDRON EATONI. Type, staminate (Florida, Ea- 
 ton, 1310) ; photographed by permission at the New York Botanical 
 Garden. 
 
 Plate 29. PHORADENDRON ENGELMANNI. a. The type, staminate 
 (Texas, Lindheimer, 406). b. A pistillate specimen (Texas, Jermy). 
 
 Plate 30. PHORADENDRON ENGELMANNI. Staminate and pistillate 
 flowering specimens, and fruit from flowers of the previous winter 
 (Fresh material from Texas, Heald, 1911). 
 
EXPLANATION OF PLATES 167 
 
 Plate 31. a. PHORADENDRON ENGELMANNI. Staminate and fruit- 
 ing specimens (Texas, Jermy). b. P. ENGELMANNI CLAVIGER, the 
 type (Texas, Trelease, 1897). 
 
 Plate 32. PHORADENDRON GREGGII. Types, a, staminate (Mexico, 
 Gregg, 254) ; b, pistillate (Mexico, Gregg, 31). 
 
 Plate 33. a. PHORADENDRON THYRSOIDEUM. The type (Mexico, 
 Palmer, 103). b. P. COLIPENSE. The type, staminate, (Mexico, Lieb- 
 mann, 8) ; photographed by permission in the herbarium at Copen- 
 hagen. 
 
 Plate 34. PHORADENDRON MACROPHYLLUM ; a, staminate ; b, pistil- 
 late (Arizona, Blumer, 1533). 
 
 Plate 35. a. PHORADENDRON MACROPHYLLUM CTRCULARE. Type, 
 pistillate (Arizona, Griffiths & Thornber, 191). b. P. MACROPHYLLUM 
 JONESII. Type, pistillate (Arizona, Jones, 4279) ; photographed by 
 permission in the Delessert herbarium at Geneva) . 
 
 Plate 36. PHORADENDRON COCKERELLI. a. Type, staminate (New 
 Mexico, Metcalfe, 31). b. Pistillate specimen (New Mexican region, 
 Wright, 15). 
 
 Plate 37. PHORADENDRON COLORADENSE. a, staminate; b, pistil- 
 late (California, du Barry, 1855) ; photographed by permission at the 
 New York Botanical Garden. 
 
 Plate 38. PHORADENDRON LONGISPICUM, staminate. a. The type 
 (California, Wilkes Expedition, 1316, as P. flavescens quinque- 
 nervium Torrey in herb.) b. Another shoot (California, Hasse, 1893). 
 Both photographed by permission at the New York Botanical Garden. 
 
 Plate 39. PHORADENDRON LONGISPICUM, pistillate, a, Shortly 
 after flowering, showing the temporary clavate thickening of the spike- 
 joints (California, Abrams, 2749) ; photographed by permission at the 
 New York Botanical Garden, b, At maturity (Fresh material, Cali- 
 fornia, Griffiths, 1912). 
 
 Plate 40. PHORADENDRON VILLOSUM. a. Type, staminate (Oregon, 
 Nuttall, 1834). b. Pistillate specimen (Oregon, Howell, 1264). 
 
 Plate 41. a. PHORADENDRON VILLOSUM ROTUNDIFOLIUM. The type, 
 pistillate (California, Elmer, 3794) . b. P. TOMENTOSUM. Fruiting spe- 
 cimen (Mexico, Palmer, 777). 
 
 Plate 42. PHORADENDRON TOMENTOSUM. The type (Mexico, Ber- 
 landier, 1364). a, staminate. b, pistillate, photographed for M. C. de 
 Candolle, in the Candollean herbarium at Geneva. 
 
168 THE GENUS PHORADENDROX 
 
 Plate 43. a. PHORADENDRON PUBERULUM. The type (Mexico, 
 Gregg, 895). b. P. PUBERULUM CHIHUAHUENSE. The type (Mexico. 
 Endlich, 1220) . 
 
 Plate 44. PHORADENDRON CORYAE. a. The type, staminate (Ari- 
 zona, Blumer, 1516). b. A fruiting specimen (Fresh material, Ari- 
 zona, Miss Kate T. Cory, to whom the species is dedicated, 1912). 
 
 Plate 45. a. PHORADENDRON HAVARDIANUM. The type, stami- 
 nate (Texas, Havard, 82). b. P. WILKINSONI. The type, staminate 
 (Mexico, Wilkinson, 1885) ; photographed by permission in the U. S. 
 National Herbarium. 
 
 Plate 46. a. PHORADENDRON LANATUM. The type, pistillate (Mex- 
 ico, Rose, Painter and Rose, 9707) ; photographed by permission in 
 the U. S. National Herbarium, b. P. GALEOTTII. The type, pistillate 
 (Mexico, Galeotti, 2694) ; photographed by permission in the Deles- 
 sert herbarium at Geneva). 
 
 Plate 47. a. PHORADENDRON PALMERI. The type, pistillate (Mex- 
 ico, Palmer, 119). b. P. EDUARDI. The type, pistillate (Mexico, Pal- 
 mer, 882). 
 
 Plate 48. a. PHORADENDRON MAZATLANUM. The type, pistillate 
 (Mexico, Gregg, 1202). b. P. BRACHYSTACHYUM. The type, as also 
 of Viscum ~brachystachyum (Mexico, Berlandier) photographed by 
 permission in the Delessert herbarium at Geneva. 
 
 Plate 49. PHORADENDRON BRACHYSTACHYUM. Two divergent stam- 
 inate forms, a (Mexico, Pringle, 1160) ; b (Mexico, Pringle, 6759) ; 
 photographed by permission in the New York Botanical Garden. 
 
 Plate 50. PHORADENDRON TLACOLULENSE. a. Type (Mexico, Seler, 
 119). b. Another specimen (Mexico, Seler, 1763). Both photographed 
 by permission in the herbarium at Dahlem. 
 
 Plate 51. PHORADENDRON GLOBULIFERUM. The type (Mexico, Pal- 
 mer, 88) ; photographed by permission in the U. S. National Herba- 
 rium. 
 
 Plate 52. PHORADENDRON AUREUM. The type (Mexico, Rose, 
 16848) ; photographed by permission in the U. S. National Herbarium. 
 
 Plate 53. a. PHORADENDRON BRACHYPHYLLUM. The type (Mex- 
 ico, Rose, 16293). b. P. TUMIDUM. The type (Mexico, Rose, 16862). 
 Both photographed by permission in the U. S. National Herbarium. 
 
 Plate 54. P. DIGUETII. The type (Mexico, Diguet, 1894) ; photo- 
 graphed for M. Lecomte, in the herbarium of the Museum d'Histoire 
 Naturelle at Paris. 
 
EXPLANATION OF PLATES 169 
 
 Plate 55. a. PHORADENDRON PENINSULARE. The type (Mexico, 
 Rose, 16354). b. P. SACCATUM. The type (Mexico, Rose, 16562). Both 
 photographed by permission in the U. S. National Herbarium. 
 
 Plate 56. PHORADENDRON ROBINSONII. The type, staminate (Mex- 
 ico, Pringle, 6272). 
 
 Plate 57. a. PHORADENDRON ROBINSONII. Fruiting specimen 
 (Mexico, Rose & Hay, 5939). b. P. ROBINSONII HINDSI (Mexico, Hinds, 
 1841) ; photographed by permission at Kew. 
 
 Plate 58. PHORADENDRON VELUTINUM. a. Type of Viscum veluti- 
 num, staminate (Mexico, Berlandier, 1158) ; photographed by permis- 
 sion in the Delessert herbarium at Geneva, b. A pistillate specimen 
 (Mexico, Pringle, 9509). 
 
 Plate 59. PHORADENDRON SCABERRIMUM. a. The type, pistillate 
 i, Mexico, Rose, 3409). b. A second specimen (Mexico, Rose, 1712). 
 Both photographed by permission in the U. S. National Herbarium. 
 
 Plate 60. PHORADENDRON LONGIFOLIUM. The type (Mexico, Kar- 
 winski, 1833) ; photographed in the Brussels herbarium for Professor 
 Bommer. 
 
 Plate 61. PHORADENDRON USPANTANUM. The type (Guatemala, 
 Heyde & Lux, 3141). 
 
 Plate 62. PHORADENDRON CALYCULATUM. The type collection of 
 Viscum falcatum Hooker, staminate (Mexico, Galeotti, 2696) ; photo- 
 graphed in the Brussels herbarium for Professor Bommer. 
 
 Plate 63. PHORADENDRON CALYCULATUM. A pistillate specimen 
 (Mexico, Pringle, 4699). 
 
 Plate 64. a. PHORADENDRON CALYCULATUM FILIPES. The type, 
 staminate (Mexico, Purpus, 6279) ; photographed by permission at the 
 New York Botanical Garden, b. P. CALYCULATUM GONZALEZI. The 
 type (Mexico, Conzatti and Gonzalez, 295) ; photographed by permis- 
 sion in the Gray herbarium at Cambridge. 
 
 Plate 65. PHORADENDRON ANNULATUM. a. The type, pistillate 
 (Costa Rica, Oersted, 14) ; photographed by permission in the herba- 
 rium at Copenhagen, b. A specimen with young and matured fruit 
 (Guatemala, Smith, 2610). 
 
 Plate 66. PHORADENDRON MULTIFLORUM. The type, staminate 
 (Guatemala, Kellerman, 5154). 
 
 Plate 67. PHORADENDRON MULTIFLORUM. A pistillate specimen, 
 one branch deformed into a gall (Guatemala, Kellerman, 5155) ; pho- 
 
170 THE GENUS PHOEADENDEON 
 
 tographed, like the preceding, by permission in the U. S. National 
 Herbarium. 
 
 Plate 68. PHORADENDRON AMPLIFOLIUM. The type, pistillate (Mex- 
 ico, Nelson, 2018} ; photographed by permission in the U. S. National 
 Herbarium. 
 
 Plate 69. PHORADENDRON CARNEUM. Two pistillate specimens, one 
 of them with matured fruit (Mexico; a, Pringle, 8647; b, Pringle, 
 2668). 
 
 Plate 70. a. PHORADENDRON PRINGLEI. The type (Mexico, Prin- 
 gle, 6630). b. P. FORESTIERAE. The type (Mexico, Pringle, 6290). 
 Both are with partly matured fruit. 
 
 Plate 71. a. PHORADENDRON PACHYARTHRON. The type, pistillate 
 (Mexico, Ehrenberg, 1011) ; photographed by permission at Dahlem. 
 b. P. SCHUMANNI. Broad-leaved specimen, pistillate (Mexico, See- 
 mann, 2140) ; photographed by permission at Kew. 
 
 Plate 72. PHORADENDRON SCHUMANN:. The type: a, staminate; 
 b, pistillate (Mexico, Schumann, 711) ; photographed by permission at 
 Dahlem. 
 
 Plate 73. PHORADENDRON PURPUSI. The type, staminate (Mex- 
 ico, Purpus, 1912) . 
 
 Plate 74. PHORADENDRON NERVOSUM. a. The type (Mexico, Lieb- 
 mann, 5=3090) ; photographed by permission at Copenhagen, b. A 
 specimen illustrating the occurrence of 4- and 6-ranked fruits on joints 
 of the same spike (Mexico, Purpus, 1912). 
 
 Plate 75. a. PHORADENDRON CONZATTII. The type (Mexico, Con- 
 zatti & Gomez, 2380). b. P. CONZATTH TEGOMATLANA (Mexico, Con- 
 zatti, 1897). Both photographed by permission in the herbarium of 
 the Field Museum at Chicago. 
 
 Plate 76. PHORADENDRON CONZATTTI NOCHIXTLANENSE. a. stami- 
 nate; b, pistillate (Mexico, Conzatti & Gonzalez, 1187) . Photographed 
 by permission in the Gray herbarium. 
 
 Plate 77. PHORADENDRON LANCEOLATUM. a. The type (Mexico, 
 Gregg, 255). b. Partly fruited specimen (Mexico, Thurber, 865) ; pho- 
 tographed by permission in the Gray herbarium. 
 
 Plate 78. PHORADENDRON FALCATUM. The type (Mexico, Scniede, 
 403) ; photographed by permission at Dahlem. 
 
 Plate 79. PHORADENDRON ANGUSTIFOLIUM. Two specimens of the 
 type collection (Peru, Bonpland, 3508) ; a, photographed by permis- 
 
EXPLANATION OF PLATES 171 
 
 sion at Dahlem ; b, the type, photographed by permission in the Nat- 
 ural History Museum at Paris. 
 
 Plate 80. PHORADENDRON PARIETARIOIDES. The type (Ecuador, 
 Sodiro, 148/20) ; photographed by permission at Dahlem. 
 
 Plate 81. PHORADENDRON CORYNARTHRON. The type (Panama, 
 Wagner, 1858) ; photographed by permission in the herbarium of the 
 Academy at Munich. 
 
 Plate 82. PHORADENDRON TONDUZII. a. The type, pistillate (Gua- 
 temala, Tonduz, 12179) ; photographed by permission at the New York 
 Botanical Garden, b. Staminate shoot (Guatemala?, Friedrichsthal, 
 1841 ) ; photographed by permission in the Gray herbarium. 
 
 Plate 83. PHORADENDRON COOPERI. The type, staminate (Costa 
 Kica, Cooper, 5931 ) ; photographed by permission in the U. S. National 
 Herbarium. 
 
 Plate 84. a. PHORADENDRON TUBULOSUM. The type (Venezuela, 
 Fendler, 1106) ; photographed by permission at Dahlem. b. PHORA- 
 DENDRON TRIANAE. The type collection (Colombia, Triana, 2778) ; pho- 
 tographed by permission in the de Candolle herbarium at Geneva. 
 
 Plate 85. PHORADENDRON SEMITERES. a. The type (Bolivia, Buch- 
 tien, 1411) ; photographed by permission at Dahlem. b. Fruiting spe- 
 cimen (Peru, Pavon) ; photographed by permission in the Boissier 
 Herbarium at Chambesy. 
 
 Plate 86. PHORADENDRON VERLEYSENI. a. The type (Ecuador, 
 Verleysen, 148*). b. A broader-leaved specimen (Ecuador, Sodiro, 
 28) . Both photographed by permission at Dahlem. 
 
 Plate 87. PHORADENDRON VERLEYSENI CHIMBOENSE. The type 
 (Ecuador, Sodiro, 148/19). b. P. GRANATICOLUM. The type (Ven- 
 ezuela, Gollmer, 1854). Both photographed by permission at Dahlem. 
 
 Plate 88. PHORADENDRON CASIMIRANUM. The type (Paraguay, 
 Balansa, 3220) ; photographed by permission in the Boissier herba- 
 rium at Chambesy. 
 
 Plate 89. PHORADENDRON DIPTERUM. The type collection (Brazil, 
 Gardner, 1672) ; photographed by permission in the herbarium of the 
 Natural History Museum at Vienna. 
 
 Plate 90. PHORADENDRON MULTIFOVEOLATUM. The types : a, stam- 
 inate ; b, pistillate (Brazil, von Martins) ; photographed by permission 
 in the herbarium at Munich. 
 
 Plate 91. a. PHORADENDRON HYPERICIFOLTUM. The type (Para- 
 guay, Kuntze, 9) ; photographed by permission at Dahlem. b. P. DE- 
 
172 THE GENUS PHORADENDRON 
 
 MEBARAE. The type (British Guiana, Jenman, 2546) ; photographed 
 by permission at Kew. 
 
 Plate 92. PHORADENDRON TETRAPTERUM. a. The type (Jamaica, 
 Harris, 6393) ; photographed by permission at Dahlem. b. A larger- 
 leaved specimen (Puerto Eico, Stevens & Hess, 4887). 
 
 Plate 93. PHORADENDRON TOVARENSE. a. The type (Venezuela, 
 Fendler, 1761) ; photographed by permission at Dahlem. b. A fruiting 
 specimen (Venezuela, Fendler, 1110) ; photographed by permission in 
 the Gray herbarium. 
 
 Plate 94. a. PHORADENDRON CRULSII. The type (Brazil, Glaziou, 
 22021 ) ; photographed by permission at Dahlem. b. P. AMPLEXICAULE. 
 Type collection (Brazil, Weddell, 1858) ; photographed by permission 
 in the de Candolle herbarium at Geneva. 
 
 Plate 95. PHORADENDRON AMPLECTENS. The type (Ecuador, So- 
 diro, 148/21) ; photographed by permission in the herbaria at Dahlem 
 and Buda Pest, both of which contain a large representation of 
 Sodiro's collections. 
 
 Plate 96. a. PHORADENDRON GLAZIOVII. The type (Brazil, Gla- 
 ziou, 4004) ; photographed by permission at Dahlem. b. P. TURBINI- 
 SPICUM. The type (Colombia, Triana, 2777) ; photographed by per- 
 mission in the de Candolle herbarium. 
 
 Plate 97. PHORADENDRON BREVIFOLIUM. a. The type (Mexico, 
 Liebmann, 16) ; photographed by permission at Copenhagen, b. Spe- 
 cimen with developed pistillate spikes (Mexico, Rose, Painter & Rose, 
 9965) ; photographed by permission in the U. S. National Herbarium. 
 
 Plate 98. PHORADENDRON RONDELETIAE. a. The type (Guatemala, 
 von Tuerckheim, ii. 2045) ; photographed by permission at the New 
 York Botanical Garden, b. Another collection (Guatemala, von 
 Tuercltheim, 435) ; photographed by permission in the Natural History 
 Museum at Vienna. 
 
 Plate 99. a. PHORADENDRON VULCANICUM. The type (Guatemala, 
 Kellerman, 4829). b. P. CRISPUM. The type (Costa Rica, Pittier, 
 14117) . Both photographed by permission in the U. S. National Her- 
 barium. 
 
 Plate 100. a. PHORADENDRON REICHENBACHIANUM. (Mexico, 
 Gregg, 722). b. P. FALCIFOLIUM. The type (Guatemala, von Tuerck- 
 heim, ii. 2168) ; photographed by permission at the New York Botan- 
 ical Garden. 
 
EXPLANATION OF PLATES 173 
 
 Plate 101. PHORADENDRON ROBUSTISSIMUM. a. The type (Costa 
 Rica, Hoffmann, 360) ; photographed by permission at Dahlem. b. 
 A fruiting specimen (Costa Rica, Tonduz, 13705) ; photographed by 
 permission in the U. S. National Herbarium. 
 
 Plate 102. PHORADENDRON ROBUSTISSIMUM SIMULANS. a. The type 
 (El Salvador, Renson, 284) ; photographed by permission at the New 
 York Botanical Garden, b. A fruiting specimen (Guatemala, Keller- 
 man, 5100) ; photographed by permission in the U. S. National Her- 
 barium. 
 
 Plate 103. PHORADENDRON CONGESTUM. The type (Brazil, Gard- 
 ner, 3764) ; photographed in the herbarium at Brussels for Professor 
 Charles Bommer. 
 
 Plate 104. a. PHORADENDRON CONGESTUM. A misnumbered co- 
 type (Brazil, Gardner, "3765") ; photographed by permission at Dah- 
 lem. b. P. CARIPENSE. The type (Brazil, Spruce, 140) ; photographed 
 by permission at Munich. 
 
 Plate 105. PHORADENDRON HERBERT-SMITHII. The type (Colom- 
 bia, Smith, 1283) ; photographed by permission, a, at Dahlem, b, in 
 the Delessert herbarium at Geneva. 
 
 Plate 106. a. PHORADENDRON EXIGUUM. The type (Colombia, 
 Smith, 1281 ) ; photographed by permission in the Delessert herbarium 
 at Geneva, b. PHORADENDRON STENOPHYLLUM. The type (Brazil, Rose 
 & Russell, 19908) ; photographed by permission in the U. S. National 
 Herbarium. 
 
 Plate 107. a. P. CORIACEUM. The type (Brazil, von Martins) ; 
 photographed by permission at Munich, b. PHORADENDRON CORIACEUM 
 QUINTENSE. The type (Brazil, Glaziou, 4010) ; photographed by per- 
 mission at Dahlem. 
 
 Plate 108. PHORADENDRON ULOPHYLLUM. The type collection 
 (Brazil, Gaudichaud: a, no. 573 at Dahlem; b, "no. 473," at Vienna) ; 
 photographed by permission. 
 
 Plate 109. PHORADENDRON HABROSTACHYUM. The type (Brazil 
 von Martins: a, staminate; b, pistillate) ; photographed by permission 
 at Munich. 
 
 Plate 110. PHORADENDRON OVALIFOLIUM. a. The type (Venezuela, 
 Fendler, 1108) ; photographed by permission at Dahlem. b. A fruit- 
 ing cotype; photographed by permission in the Grisebach herbarium 
 at Goettingen. 
 
174 THE GENUS PHOEADENDBON 
 
 Plate 111. PHORADENDRON LONGIPETIOLATUM. a. The type (Ven- 
 ezuela, Fendler 1762} ; photographed by permission at Dahlem. b. An- 
 other specimen of the same collection ; photographed by permission in 
 the Grisebach herbarium at Goettingen. 
 
 Plate 112. PHORADENDRON BILINEATUM. a. The type (Venezuela, 
 Fendler, 1811} ; photographed by permission at Dahlem. b. Another 
 specimen of the same collection; photographed by permission in the 
 Grisebach herbarium at Goettingen. 
 
 Plate 113. PHORADENDRON RIGIDUM. a. The type (Venezuela, 
 Fendler, 1105} ; photographed by permission at Dahlem. b. A second 
 specimen of the same collection, bearing spikes in the axils of some 
 cataphyls ; photographed by permission in the Grisebach herbarium at 
 Goettingen. 
 
 Plate 114. PHORADENDRON JENMANI. a. The type (British Gui- 
 ana, Jenman, 2541}. b. A second collection (British Guiana, Jenman, 
 4678} . Both photographed by permission at Kew. 
 
 Plate 115. PHORADENDRON POLYGYNUM. Two specimens of a sin- 
 gle collection (Venezuela, Fendler, 1104). Photographed by permis- 
 sion : a, at Kew ; b, in the Gray herbarium. 
 
 Plate 116. a. PHORADENDRON POLYGYNUM. Part of the type 
 illustration of Spiciviscum polygynum. b. P. BRIQUETIANUM. The type 
 (Colombia, Linden, 796} ; photographed by permission in the Delessert 
 herbarium at Geneva. 
 
 Plate 117. PHORADENDRON OBLIQUUM. a. The type of the binom- 
 ial (without precise data, Haenke, from the herbarium of the German 
 University at Prag) ; photographed by permission at Dahlem. b. The 
 type of Viscum obliquum (Peru, Haenke) photographed by permis- 
 sion in the National Museum at Prag. 
 
 Plate 118. PHORADENDRON DIMIDIATUM. The type collection of 
 Viscum dimidiatum (Surinam, Focke, 716). Photographed by per- 
 mission : a, at Dahlem, from the Utrecht herbarium ; b, at Kew. 
 
 Plate 119. PHORADENDRON PERROTTETII. a. The type of Viscum 
 Perrottetii (French Guiana, Perrottet, 228). b. Another collection 
 (French Guiana, Leprieur, 1835). Both photographed by permission 
 in the Delessert herbarium at Geneva. 
 
 Plate 120. PHORADENDRON BATHYORYCTUM. a. The type collection 
 (Brazil, Gardner, 2626) ; photographed by permission in the Natural 
 History Museum at Vienna, b. Another collection (Brazil, Kuntze, 3) ; 
 photographed by permission at Dahlem. 
 
EXPLANATION OF PLATES 175 
 
 Plate 121. PHORADENDRON PELLUCIDULUM. The type collection 
 (Brazil, Spruce, 3480) ; photographed by permission in the Natural 
 History Museum at Vienna. 
 
 Plate 122. a. PHORADENDRON HOLOXANTHUM. The type collection 
 (Brazil, Sello, 5847) ; photographed by permission at Dahlem. b. P. 
 HOLOXANTHUM CORALLISPICUM. The type (Brazil, Glaziou, 8729) ; pho- 
 tographed by permission in the Delessert herbarium at Geneva. 
 
 Plate 123. a. PHORADENDRON NITIDUM. The type collection of 
 Viscum nitidum (Brazil, Gardner, 436) ; photographed by permission 
 in the Natural History Museum at Vienna, b. P. SELLOI. The type 
 collection (Brazil, Sello, 122) ; photographed by permission at Dahlem. 
 Plate 124. a. PHORADENDRON CRASPEDOPHYLLUM. The type (Bra- 
 zil, Sello, 155). b. P. CRASPEDOPHYLLOIDES. The type (Brazil, Sello, 
 without number). Both photographed by permission at Dahlem. 
 
 Plate 125. PHORADENDRON OBTUSISSIMUM. a. The type collection 
 of Viscum obtusissimum (Surinam, Focke, 1019) ; photographed by 
 permission at Dahlem. b. A fruiting specimen from British Guiana 
 (Jenman, 2539) ; photographed by permission at Kew. 
 
 Plate 126. PHORADENDRON ACINACIFOLJUM. The type collection 
 (Brazil, Gaudichaud, 574). Photographed by permission: a, at Dah- 
 lem ; b, under the number 874, in the Delessert herbarium at Geneva. 
 Plate 127. a. PHORADENDRON ACINACIFOLIUM. Fruiting specimen 
 (Brazil, Sello, 597). b. P. REDUCTUM. The type (Paraguay, Kuntze, 
 15). Both photographed by permission at Dahlem. 
 
 Plate 128. PHORADENDRON WAWRAE. a. The type (Mexico, Wawra, 
 747) ; photographed by permission in the Natural History Museum at 
 Vienna, b. A second collection (Mexico, Bourgeau, 1482) ; photo- 
 graphed by permission at Kew. 
 
 Plate 129. a. PHORADENDRON CHEIROCARPUM. The type (Guate- 
 mala,wn Tuerckheim, 7661 ) ; photographed by permission in the Gray 
 herbarium, b. P. DECUSSATUM. The type (Honduras, Niederlein, 95) ; 
 photographed by permission at Dahlem. 
 
 Plate 130. PHORADENDRON VERNICOSUM. a. The type (Yucatan, 
 Greenman, 440) ; photographed by permission in the Field Museum at 
 Chicago, b. A younger specimen (Yucatan, Gaumer, 876). 
 
 Plate 131. PHORADENDRON FICI. The type (Jamaica, Harris, 
 9220) ; photographed by permission at Dahlem. 
 
 Plate 132. PHORADENDRON CAMPBELLII. a. The type (Jamaica, 
 Campbell, 6398) ; photographed by permission at Dahlem. b. A spe- 
 
176 THE GENUS PHOEADENDEON 
 
 cimen with partly grown fruit (Jamaica, Britton, 3765} ; photo- 
 graphed by permission at the New York Botanical Garden. 
 
 Plate 133. PHORADENDRON GRISEBACHIANUM. a. Taken as the 
 type (Jamaica, Harris, 6341) ; photographed by permission at Dahlem. 
 b. A second collection (Jamaica, Crawford, 783) ; photographed by 
 permission at the New York Botanical Garden. 
 
 Plate 134. PHORADENDRON CHRYSOCARPUM. The type collection. 
 
 a. (Puerto Rico, Balbis, Bertero), photographed by permission at Dah- 
 lem. b. (Puerto Rico, Bertero, 439 in part) ; photographed by per- 
 mission in the National Museum at Prag. 
 
 Plate 135. a. PHORADENDRON ANCEPS. The type collection of 
 Viscum anceps (Santo Domingo, Bertero, 439 in part, from Spren- 
 gel) ; photographed by permission in the National Museum at Prag. 
 
 b. P. HAITENSE. The type (Haiti, Picarda, 1666) ; photographed by 
 permission at Dahlem. 
 
 Plate 136. PHORADENDRON HARTH. The type (Trinidad, Hart, 
 6101). b. A flowering specimen (Trinidad, Lunt, 6117). Both photo- 
 graphed by permission at Dahlem. 
 
 Plate 137. PHORADENDRON WATTII. The type (Jamaica, Hitch- 
 cock). Photographed at the Missouri Botanical Garden by Professor 
 C. H. Thompson. 
 
 Plate 138. a. PHORADENDRON WATTII. A representative fruiting 
 specimen (Jamaica, Campbell, 6401). b. P. WATTII PRODUCTUM. The 
 type (Jamaica, Harris, 10188). Both photographed by permission at 
 Dahlem. 
 
 Plate 139. PHORADENDRON HELLERI. The type collection (Puerto 
 Rico, Heller, 6188) . Photographed by permission : a, at the New York 
 Botanical Garden ; b, in the U. S. National Herbarium. 
 
 Plate 140. a. PHORADENDRON HELLERI SANGUINEUM. The type 
 (Santo Domingo, Fuertes, 1531b). b. P. CRENULATUM. The type 
 (Jamaica, Harris, 6659). Both photographed by permission at Dah- 
 lem. 
 
 Plate 141. PHORADENDRON Dussn. a. The type (Guadeloupe, 
 Duss, 3904 in part) ; photographed by permission at Dahlem. b. A 
 second collection (Guadeloupe, Duss, 2969b) ; photographed by per- 
 mission at the New York Botanical Garden. 
 
 Plate 142. PHORADENDRON GUNDLACHII. a. The type collection 
 (Cuba, Wright, 2650) ; photographed by permission in the Boissier 
 herbarium at Chambesy. b. A fruiting specimen ( Cuba, Britton, Brit- 
 
EXPLANATION OF PLATES 177 
 
 /0?i and Cowell, 13106) ; photographed by permission at the New York 
 Botanical Garden. 
 
 Plate 143. PHORADENDRON DOMINGENSE. Two specimens from 
 Jamaica (a, Campbell, 6605; b, Campbell, 6398 in part) ; photo- 
 graphed by permission at the New York Botanical Garden. 
 
 Plate 144. PHORADENDRON TRINERVIUM. a. The type collection of 
 Viscum trinervium and of V. myrtilloides (Martinique, Isert, 1787, 
 as no. 18296 in the Willdenow herbarium) ; photographed by permis- 
 sion at Dahlem. b. The typical representative of P. trinervium in the 
 collection of the author of the binomial (Jamaica, McNab, 68) ; photo- 
 graphed by permission in the Grisebach herbarium at the University 
 of Goettingen. 
 
 Plate 145. PHORADENDRON TRINERVIUM. a. The type collection of 
 Viscum oblongifolium (Guadeloupe, Perrottet, 1824) ; photographed 
 by permission in the Delessert herbarium at Geneva, b. A second col- 
 lection (Guadeloupe, Bertero, 1820) ; photographed by permission in 
 the de Candolle herbarium at Geneva. 
 
 Plate 146. PHORADENDRON TRINERVIUM. a. Fruiting specimen 
 showing the change from the elongated young fruit to the globose ma- 
 ture fruit (Puerto Rico, Sintenis, 3246) ; photographed by permission 
 in the Delessert herbarium at Geneva, b. A Bahamian specimen (Wat- 
 ling Isl., Wilson, 7254) ; photographed by permission at the New York 
 Botanical Garden. 
 
 Plate 147. a. PHORADENDRON APPUNI. The type (British Guiana, 
 Appun, 1783). b. P. APERTUM. The type (British Guiana, Jenman, 
 3801 ) . Both photographed by permission at Kewa. 
 
 Plate 148. PHORADENDRON GUAZUMAE. The type (Mexico, Rose, 
 Standley and Russell, 13846) ; photographed by permission in the U. 
 S. National Herbarium. 
 
 Plate 149. a. PHORADENDRON SANCTAE-MARTAE. The type (Colom- 
 bia, Smith, 1284) ; photographed by permission in the U. S. National 
 Herbarium, b. P. RENSONI. The type (El Salvador, Renson, 256) ; 
 photographed by permission at the New York Botanical Garden. 
 
 Plate 150. a, PHORADENDRON ZULOAGAE. The type (Venezuela, 
 Zuloaga, 1915). b, P. COMMUTATUM. The type (Mexico, Gregg, 903). 
 
 Plate 151. PHORADENDRON COMMUTATUM. Two medium-leaved 
 specimens( a, Rose, Standley & Russell, 14450-,}), Rose, 1525) ; photo- 
 graphed by permission in the U. S. National Herbarium. 
 
178 THE GENUS PHOEADENDEON 
 
 Plate 152. PHORADENDRON RUBRUM. Two specimens of the proto- 
 type of Viscum rubrum (Bahamas: a, vol. 2, p. 2, of the Catesby her- 
 barium ; b, vol. 2, p. 8, of the same collection) ; photographed by per- 
 mission in the Natural History Museum at South Kensington, London. 
 
 Plate 153. PHORADENDRON RUBRUM. The type of P. tetrastach- 
 yum spatJiulifolium and of P. spathulifolium (Cuba, Wright 512= 
 1300 b ) . Photographed by permission : a, in the Grisebach herbarium 
 at Gottingen ; b, in the Gray herbarium at Cambridge. 
 
 Plate 154. PHORADENDRON QUADRANGULARE. a. Type of Viscum 
 salicifolium (Ecuador, Haenke) photographed by permission in the 
 herbarium of the German University at Prag. b. A specimen showing 
 the turbinate joints of the partly matured spikes (Ecuador, Eggers, 
 14829) ; photographed by permission at Dahlem. 
 
 Plate 155. a. PHORADENDRON QUADRANGULARE. The type of Lor- 
 anfhus quadrangularis (Colombia, Bonpland, 1795). b. P. VISCIFO- 
 LIUM. The type of L. viscifolius (Ecuador, Bonpland, 3798) ; both 
 photographed by permission at the Natural History Museum of Paris. 
 
 Plate 156. PHORADENDRON WIESNERIANUM. The type (Brazil. 
 Gardner, 1674) ; photographed by permission in the Natural History 
 Museum at Vienna. 
 
 Plate 157. PHORADENDRON PIAUHYANUM. a. The type (Brazil, 
 Gardner, 2617) ; photographed by permission in the Natural History 
 Museum at Vienna, b. A specimen showing the turbinate young spike 
 joints (Brazil, Spruce, 2909) ; photographed by permission in the Na- 
 tural History Museum at Buda Pest. 
 
 Plate 158. PHORADENDRON CEIBANUM. The type ( Costa Rica, Pit- 
 tier, 3900) ; photographed in the herbarium at Brussels for Professor 
 Bommer. 
 
 Plate 159. PHORADENDRON VENEZUELENSE. a. The type (Venezuela, 
 Fendler, 1810) ; photographed by permission at Kew. b. A second 
 specimen (Panama, Hayes, 829) ; photographed by permission at the 
 New York Botanical Garden. 
 
 Plate 160. PHORADENDRON ANTILLARUM. a. The type (Cuba, 
 Wright, 1302). b. A broader-leaved specimen in fruit (Puerto Rico 
 ( Stevens & Hess, 5827). 
 
 Plate 161. PHORADENDRON ANTILLARUM ORIENTALS, a. The type 
 ( Cuba, Britton, 2119) . b. The type of f . LONGA ( Cuba, Britton, 2415) . 
 Both photographed by permission at the New York Botanical Garden. 
 
EXPLANATION OF PLATES 179 
 
 Plate 162. PHORADENDRON TOWNSENDI. a. The type (Socorro Isl., 
 Barkelew, 177). b. Another collection (Socorro Isl., Townsend, 1899). 
 Both photographed by permission in the U. S. National Herbarium. 
 
 Plate 163. a. PHORADENDRON GRACILE. The type, pistillate (Ja- 
 maica, Harris, 6392). b. P. GRACILE BALLII. The type, staminate (Ja- 
 maica, Ball, 1882). Both photographed by permission at Dahlem. 
 
 Plate 164. PHORADENDRON MICROPHYLLUM. a. The type collection 
 of Viscum microphylluin (Brazil, Pohl, 245=4583) ; photographed by 
 permission in the National Museum at Prag. b. A fruiting specimen 
 (Brazil, Gardner, 1325) ; photographed by permission in the Delessert 
 herbarium at Geneva. 
 
 Plate 165. PHORADENDRON AFFINE. The type of Viscum affine 
 (Brazil, Pohl 544). Photographed by permission: a, in the de Can- 
 dolle herbarium at Geneva; b, in the Natural History Museum at 
 Vienna. 
 
 Plate 166. PHORADENDRON MARTIANUM. a. The type (Brazil, 
 Gardner, 1321). b. A fruiting specimen (Brazil, Gardner, 1323). 
 Both photographed by permission in the Delessert herbarium at Ge- 
 neva. 
 
 Plate 167. a. PHORADENDRON GAUMERI. The type (Yucatan, Gau- 
 mer, 561). b. P. TAMAULIPENSE. The type (Mexico, Seler, 4484) ; 
 photographed by permission at Dahlem. 
 
 Plate 168. PHORADENDRON ZACAPANUM. a. The type (Guatamala, 
 Kellerman, 5612). b. A second specimen (Guatemala, Kellerman, 
 5728). 
 
 Plate 169. PHORADENDRON LYONI. The type (Venezuela, Lyon, 
 1900) ; photographed by permission in the U. S. National Herbarium. 
 
 Plate 170. PHORADENDRON EMARGINATUM. a. The type collection 
 (Brazil, Claussen, 252) ; photographed by permission in the Delessert 
 herbarium at Geneva, b. A specimen showing the occasional emphasis 
 of the midrib beneath (Brazil, Glaziou, 9861) ; photographed by per- 
 mission at Copenhagen. 
 
 Plate 171. PHORADENDRON OBOVATIFOLIUM. The type (Paraguay, 
 Morong, 1582) ; photographed at the New York Botanical Garden for 
 Professor Britton. 
 
 Plate 172. a. PHORADENDRON MINOR. The type (Brazil, von Mar- 
 tins') ; photographed by permission at Munich, b. P. MUCRONATUM. 
 A representative specimen (Martinique, HaJin, 296) ; photographed 
 by permission in the Delessert herbarium at Geneva. 
 
180 THE GENUS PHORADENDRON 
 
 Plate 173. a. PHORADENDRON YUCATANUM. The type (Yucatan, 
 Gaumer, 561 in part) ; photographed by permission at the Field Mu- 
 seum in Chicago, b. P. OTTONIS. A representative specimen (Ven- 
 ezuela, Eggers, 13335} ; photographed by permission at Copenhagen. 
 
 Plate 174. a. PHORADENDRON DEGENIANUM. The type (Colombia, 
 Smith 1285) ; photographed by permission in the Natural History Mu- 
 seum at Buda Pest. b. P. CUNEIFOLIUM. The type (Venezuela, Fend- 
 ler, 1115) photographed by permission in the Grisebach herbarium 
 at Gottingen. 
 
 Plate 175. PHORADENDRON CEARENSE MINOR. The type collection 
 (Brazil, Gardner, 1669). Photographed by permission: a, in the Na- 
 tural History Museum at Vienna; b, in the Boissier herbarium at 
 Chambesy. 
 
 Plate 176. a. PHORADENDRON CEARENSE. The type collection (Bra- 
 zil, Gardner, 1675) ; photographed by permission in the Natural His- 
 tory Museum at Vienna, b. P. CARACASANUM. The type (Venezuela, 
 Gollmer, 1855) ; photographed by permission at Dahlem. 
 
 Plate 177. a. PHORADENDRON ARGENTINUM. The larger-leaved type 
 (Argentina, Hieronymus & Lorentz, 237). b. P. ERNSTIANUM. The 
 type (Peru, Weberbauer, 4251). Both photographed by permission 
 at Dahlem. 
 
 Plate 178. a. PHORADENDRON MELIAE. The type (Paraguay, Bal- 
 ansa,2495). b. P. PRUINOSUM. The type (Argentina, Lorentz, 688). 
 Both photographed by permission at Dahlem. 
 
 Plate 179. PHORADENDRON LIGA. The type of Viscum Liga (Ar- 
 gentina, Gillies). Photographed at Kew for Sir David Prain. 
 
 Plate 180. a. PHORADENDRON LIGA. A specimen showing the char- 
 acteristic sharp nervation (Argentina, Lorentz, 431). b. P. HIER- 
 ONYMI. The type (Argentina, Hieronymus, 421). Both photographed 
 by permission at Dahlem. 
 
 Plate 181. PHORADENDRON LINEARIFOLIUM. a. The type collection 
 (Brazil, Riedel) ; photographed by permission in the Boissier herba- 
 rium at Geneva, b. A specimen in flower (Brazil, Glaziou, 19419) ; 
 photographed by permission at Copenhagen, 
 
 Plate 182. PHORADENDRON ENSIFOLIUM. a. The type of Viscum 
 ensifolium (Brazil, Pohl, 106) ; photographed by permission in the de 
 Candolle herbarium at Geneva, b. A flowering specimen (Brazil, 
 Warming, 381) ; photographed by permission at Copenhagen. 
 
181 
 
 Plate 183. PHORADENDRON LANCEOLATO-ELLIPTICUM. The type of 
 Viscum interruption and of V. lanceolato-ellipticum (Brazil, Pohl, 
 273). Photographed by permission: a, in the de Candolle herbarium 
 at Geneva ; b, in the Natural History Museum at Vienna. 
 
 Plate 184. PHORADENDRON MACRARTHRUM. The type collection 
 (Brazil, Gardner, 3765). Photographed by permission: a, in the Del- 
 essert herbarium at, Geneva; b, in the Natural History Museum at 
 Vienna. 
 
 Plate 185. PHORADENDRON FALCIFRONS. The type of Viscum falci- 
 frons (Uruguay, Tweedie) photographed in the Hooker herbarium 
 at Kew for Sir David Prain. 
 
 Plate 186. PHORADENDRON FALCIFRONS. a. A flowering specimen 
 (Uruguay, Lorentz, 1779) ; photographed by permission at Dahlem. 
 b. A flowering specimen (Uruguay, Balansa, 3219) ; photographed by 
 permission in the Delessert herbarium at Geneva. 
 
 Plate 187. PHORADENDRON TUCUMANENSE. A type collection (Ar- 
 gentina, Lorentz & Hieronymus, 728) ; photographed in the herbarium 
 at Brussels for Professor Bommer. 
 
 Plate 188. a. PHORADENDRON TUCUMANENSE. A fruiting specimen 
 (Argentina, Fiebrig, 2174). b. P. KUNTZEI. The type (Bolivia, Kuntze, 
 20) . Both photographed by permission at Dahlem. 
 
 Plate 189. PHORADENDRON NORTHROPIAE. a. The type (Andros 
 Isl., Northrop, 551) ; photographed by permission at Dahlem. b. A 
 second collection (Andros Isl., Brace, 5325) ; photographed by permis- 
 sion at the New York Botanical Garden. 
 
 Plate 190. PHORADENDRON UNDULATUM. The type of Viscum un- 
 dulatum (Brazil, Polil, 1828). Photographed by permission: a, in the 
 de Candolle herbarium at Geneva ; b, in the Natural History Museum 
 at Vienna. 
 
 Plate 191. a. PHORADENDRON UNDULATUM. A flowering specimen 
 (Bolivia, Bang, 363) ; photographed by permission in the Boissier 
 herbarium at Geneva, b. P. HERMINIERI. The type (Guadeloupe, 
 Duss, 3904 in part) ; photographed by permission in the U. S. National 
 Herbarium. 
 
 Plate 192. PHORADENDRON GRACILISPICUM. a. The type (Costa 
 Rica, Tonduz, 12215). b. A second collection (Costa Rica, Tonduz, 
 10110). Both photographed by permission in the U. S. National Her- 
 barium. 
 
182 THE GENUS PHORADENDEON 
 
 Plate 193. PHORADENDRON PERUVIANUM. The type (Peru, Ruiz) ; 
 photographed by permission at Dahlem. 
 
 Plate 194. PHORADENDRON BALANSAE. The type (Paraguay, Bal- 
 ansa, 2497) ; photographed by permission at Dahlem. 
 
 Plate 195. a. PHORADENDRON BALANSAE HASSLERI. The type (Par- 
 aguay, Hassler, 7436) ; photographed by permission in the Delessert 
 herbarium at Geneva, b. P. AVENIA. The type (Colombia, Stuebel, 
 165) ; photographed by permission at Dahlem. 
 
 Plate 196. PHORADENDRON ENGLERIANUM. The types: a, stam- 
 inate; b, pistillate (Peru, Weberbauer, 1902) ; photographed by per- 
 mission at Dahlem. 
 
 Plate 197. PHORADENDRON MANDONII. a. The type collection (Boli- 
 via, Mandon, 1467) ; photographed by permission in the Natural His- 
 tory Museum at Vienna, b. P. MATHEWSI. The type (Peru, Mathews, 
 1846) ; photographed by permission in the Delessert herbarium at 
 Geneva. 
 
 Plate 198. PHORADENDRON WARMINGII. a. The type (Brazil, 
 Warming, 383). b. The type collection of P. rugulosum (Brazil, Gla- 
 ziou, 4012). Both photographed by permission at Copenhagen. 
 
 Plate 199. PHORADENDRON HEYDEANUM. The type (Guatemala, 
 Heyde & Lux, 3140) ; photographed by permission in the U. S. Na- 
 tional Herbarium. 
 
 Plate 200. PHORADENDRON HEXASTICHUM. a. The type of Viscum 
 liexasticlium (Cuba, de la Ossa, 1825) ; photographed by permission in 
 the de Candolle herbarium at Geneva, b. A second collection (Mar- 
 tinique, Sieber, 227 in part) ; photographed by permission at Dahlem. 
 
 Plate 201. a. PHORADENDRON HEXASTICHUM ANGUSTIFOLIUM. The 
 type (Grenada, Eggers, 6140) ; photographed by permission at Dah- 
 lem. b. P. OLIVERIANUM. The type (Mexico, Liebmann, 3085) ; photo- 
 graphed by permission at Copenhagen. 
 
 Plate 202. PHORADENDRON RACEMOSUM. a. The type of Viscum 
 macrophyllum (Puerto Rico, Bertero, 1820) ; photographed by permis- 
 sion in the de Candolle herbarium at Geneva, b. The type collection 
 of V. glandulosum (Surinam, Focke) ; photographed by permission at 
 Kew. 
 
 Plate 203. PHORADENDRON RACEMOSUM. a. A round-leaved speci- 
 men (British Guiana, Schomburgk}. b. A short-spiked specimen 
 (Santo Domingo, Eggers, 2011). Both photographed by permission 
 at Dahlem. 
 
EXPLANATION OF PLATES 183 
 
 Plate 204. PHORADENDRON PRODUCTIPES. a. The type (Brazil, 
 Gardner, 1676) ; photographed by permission in the Natural History 
 Museum at Vienna, b. The type collection of P. hexastichum v. longi- 
 spica (Brazil, Gardner, 2112) ; photographed by permission in the 
 Delessert herbarium at Geneva. 
 
 Plate 205. a. PHORADENDRON BOLIVIANUM. The type (Bolivia, 
 Bang, as second collection for 632). b. P. CERINOCARPUM. The type 
 (Santo Domingo, Wright, Parry & Brummel, 459). Both photo- 
 graphed by permission at the New York Botanical Garden. 
 
 Plate 206. PHORADENDRON CERINOCARPUM. Flowering and fruit- 
 ing material (Santo Domingo, Fuertes, 275). Photographed by per- 
 mission : a, in the Delessert herbarium at Geneva ; b, in the Natural 
 History Museum at Vienna. 
 
 Plate 207. PHORADENDRON CARINATUM. The type (British Guiana, 
 Jenman, 2542) ; photographed by permission at Kew. 
 
 Plate 208. a. PHORADENDRON BRITTONIANUM. The type collection 
 (Bolivia, Bang, 632). b. P. PTERONEURON. A flowering specimen 
 (Brazil, Robert, 439). Both photographed by permission at Dahlem. 
 
 Plate 209. PHORADENDRON PTERONEURON. a. A small-leaved spe- 
 cimen (Brazil, Riedel, 1829) ; photographed by permission at Copen- 
 hagen, b. A round-leaved specimen (Brazil, Gardner, 1677) ; photo- 
 graphed by permission in the Delessert herbarium at Geneva. 
 
 Plate 210. a. PHORADENDRON FRAGILE. One of the original collec- 
 tions, all very fragmentary (Brazil, Glaziou, 22023) ; photographed 
 by permission at Dahlem. b. P. TUNAEFORME. The type collection of 
 Viscum articulatum and of V. tunaeforme (Brazil, Pohl, 1928) ; photo- 
 graphed by permission in the Natural History Museum at Vienna. 
 
 Plate 211. a. PHORADENDRON EGGERSH. The type (Ecuador, Eg- 
 gers, 15229). b. P. FENDLERIANUM. The type (Venezuela, Fendler, 
 1102) . Both photographed by permission at Dahlem. 
 
 Plate 212. PHORADENDRON PARADOXUM. The type (Venezuela, 
 Karsten, 5) : a, reduced two-thirds ; b, natural size. Photographed by 
 permission at Dahlem. 
 
 Plate 213. PHORADENDRON CRASSIFOLIUM. The type of Viscum 
 crassifolium (Brazil, Pohl, 457). Photographed by permission: a, in 
 the de Candolle herbarium at Geneva ; b, in the Natural History Mu- 
 seum at Vienna. 
 
 Plate 214. a. PHORADRENDON CRASSIFOLIUM. The type of P. pe- 
 pericarpum (Brazil, Wilkes Expedition) photographed by permission 
 
184 THE GENUS PHORADENDRON 
 
 in the Gray herbarium at Cambridge, b. P. CRASSIFOLIUM MULTIFLO- 
 RUM. The type (Brazil, Riedel) photographed by permission at Mu- 
 nich. 
 
 Plate 215. PHORADENDRON CRASSIFOLIUM PITTIERI. The type (Gua- 
 temala, Tonduz, 6863). Photographed at Brussels for Professor 
 Charles Bommer. 
 
 Plate 216. PHORADENDRON MARTINICENSE. a. The type of Viscum 
 martinicense (Martinique, Sieber, 227} ; photographed by permission 
 in the Delessert herbarium at Geneva, b. A fruiting specimen (Gua- 
 deloupe, Duss 3891} ; photographed by permission at Dahlem. 
 
 Plate 217. PHORADENDRON PIPEROIDES. a. The type of Loranfhus 
 piperoides (Colombia, Bonpland, 1871} photographed by permission 
 in the Natural History Museum at Paris, b. The type collection of 
 Viscum Schottii (Brazil, Pohl, 246} ; photographed by permission in 
 the National Museum at Prag. 
 
 Plate 218. PHORADENDRON PIPEROIDES. The type of Viscum lauri- 
 folium (Mexico, Leibold) ; photographed by permission at the German 
 University in Prag. 
 
 Plate 219. PHORADENDRON PIPEROIDES. Two specimens of the lau- 
 rifolium group: a, Mexico, Purpus, 3693; b, Guatemala, Kellerman, 
 5822. 
 
 Plate 220. PHORADENDRON PIPEROIDES. The type of Loranthus 
 torulosus (Colombia, Bonpland, 3808) ; photographed by permission 
 in the Natural History Museum at Paris. 
 
 Plate 221. PHORADENDRON PIPEROIDES. a. The typical form of 
 Viscum saururoides (French Guiana, Patris} ; photographed by per- 
 mission in the Delessert herbarium at Geneva, b. The type of V. tere- 
 ticaule cubense (Cuba, de la Ossa) ; photographed by permission in 
 the de Candolle herbarium at Geneva. 
 
 Plate 222. PHORADENDRON PIPEROIDES. a. The type of Viscum 
 ellipticum (Mexico, Haenke) ; photographed by permission in the Na- 
 tional Museum at Prag. b. The type of V. cornifolium (Mexico, 
 Haenke) ; photographed by permission in the German University at 
 Prag. 
 
 Plate 223. a. PHORADENDRON GARDNERIANUM. The type (Brazil, 
 Gardner, 2885) ; photographed by permission at Dahlem. b. P. ESSE- 
 QUIBENSE. The type (British Guiana, Jenman, 2252} ; photographed 
 by permission at Kew. 
 
EXPLANATION OF PLATES 185 
 
 Plate 224. PHORADENDRON STRONGYLOCLADOS. a. The type collec- 
 tion (Brazil, Gardner, 1029) ; photographed by permission in the Gray 
 herbarium at Cambridge, b. A second collection (Brazil, Gardner, 
 3205} ; photographed by permission at Dahlem. 
 
 Plate 225. a. PHORADENDRON JOHNSTONI. The type (Cocke Isl., 
 Johnston, 10) ; photographed by permission in the Gray herbarium at 
 Cambridge, b. P. CAESALPINIAE. The type (Brazil, Vie, 7243) ; photo- 
 graphed by permission at Dahlem. 
 
 Plate 226. PHORADENDRON SURINAMENSE. The type (Surinam, 
 Versteeg, 239) ; photographed at Leiden by Dr. I. Boldingh. 
 
 Plate 227. PHORADENDRON PLATYCAULON. Two of the type ex- 
 tremes. (Brazil, Spruce : a, no. 1=226; b, 2=228) . Photographed by 
 permission : a, in the Grisebach herbarium at Gottingen ; b, at Munich. 
 
 Plate 228. a. PHORADENDRON PACHYPHYLLUM. The type (Vene- 
 zuela, Fendler, 1103ft) ; photographed by permission in the Grisebach 
 herbarium at Gottingen. b. P. KNOOPII. The type (Venezuela, Knoop, 
 in, b ) ; photographed by permission at Dahlem. 
 
 Plate 229. PHORADENDRON CHRYSOCLADON. a. The type (Brazil, 
 Wilkes Expedition) ; photographed by permission in the Gray herba- 
 rium at Cambridge, b. A fruiting specimen (Brazil, Saltzmann, 302) ; 
 photographed by permission in the Delessert herbarium at Geneva. 
 
 Plate 230. PHORADENDRON CHRYSOCLADON. The type of P. reticu- 
 latum (Brazil, Glaziou, 7664) photographed by permission at Co- 
 penhagen. 
 
 Plate 231. a. PHORADENDRON MEMBRANACEUM. The type (Ecua- 
 dor, Sodiro, 148/18) ; photographed by permission at Dahlem. b. P. 
 QUINQUENERVIUM. The type collection (Costa Rica, Tonduz, 11457) ; 
 photographed by permission in the U. S. National Museum. 
 
 Plate 232. PHORADENDRON SUPRA VENULOSUM. a. The type (Gua- 
 temala, von Tuerckheim, 8574). b. A fruiting specimen (Guatemala, 
 von Tuerckheim, 7967) . Both photographed by permission in the U. S. 
 National Museum. 
 
 Plate 233. PHORADENDRON FLAVENS. a. Flowering specimen (Ja- 
 maica, Watt, 6219) ; photographed for Dr. N. L. Britton at the New 
 York Botanical Garden, b. Fruiting specimen, one leaf seen from be- 
 neath ( St. Vincent, Eggers, 6746) ; photographed by permission at 
 Dahlem. 
 
 Plate 234. a. PHORADENDRON TRISULCATUM. The type (Ecuador, 
 Spruce, 6202) ; photographed by permission at Kew. b. P. URBANI- 
 
186 THE GENUS PHOEADENDEON 
 
 ANUM. The type (Peru, Vie, 6681} ; photographed by permission at 
 Dahlem. 
 
 Plate 235. PHORADENDRON LINDAVIANUM. The type (Peru, Web- 
 erbauer, 1288) ; photographed by permission at Dahlem. 
 
 Plate 236. PHORADENDRON LAXIFLORUM. The type (Brazil, Vie, 
 5251 ) ; photographed by permission at Dahlem. 
 
 Plate 237. a. PHORADENDRON HUALLAGENSE. The type (Peru, Tile, 
 6664). b. P. DICHOTOMUM. The type of P. Giordanae (Venezuela, 
 Knoop, Hi, a). Both photographed by permission at Dahlem. 
 
 Plate 238. PHORADENDRON DICHOTOMUM. a. The type of Viscum 
 dichotomum (Santo Domingo, Bertero, 710) ; photographed by per- 
 mission in the National Museum at Prag. b. The type of P. Berteri- 
 anum (Santo Domingo, Bertero) ; photographed by permission in the 
 de Candolle herbarium at Geneva. 
 
 Plate 239. a. PHORADENDRON DICHOTOMUM (Puerto Rico, Sintenis, 
 3058). b. P. DICHOTOMUM OVATIFOLIUM. The type (Santo Domingo, 
 Eggers, 1845). Both photographed by permission at Dahlem. 
 
 Plate 240. PHORADENDRON CYMOSUM. The type (Venezuela, Goll- 
 mer, 1856) ; photographed by permission at Dahlem. 
 
 Plate 241. PHORADENDRON GALAPAGEIUM. The type of Viscum 
 galapageium (Charles Isl., Darwin, 1835) ; photographed for Mr. C. E. 
 Moss in the Henslow herbarium at the University of Cambridge. 
 
 Plate 242. PHORADENDRON HENSLOVII. The type of Viscum Hens- 
 lovii (Chatham Isl., Darwin, 1835) ; photographed for Mr. C. B. Moss 
 in the Henslow herbarium at the University of Cambridge. 
 
 Plate 243. a. PHORADENDRON HENSLOVTI (Chatham Isl., Steindach- 
 ner, 67) ; photographed by permission in the Natural History Museum 
 at Vienna, b. P. UNCINATUM. The type (South Narborough Isl., Snod- 
 grass & Heller, 325) ; photographed by permission in the Gray herba- 
 rium at Cambridge. 
 
 Plate 244. a. PHORADENDRON CAMPINENSE. The type (Brazil, de 
 Campos Novaes, 417 in part) ; photographed by permission in the U. S. 
 National Herbarium, b. P. HOLTONIS. The type (Colombia, Holton, 
 655) ; photographed by permission in the Boissier herbarium at Cham- 
 besy. 
 
 Plate 245. PHORADENDRON LINDENI. The type ( Colombia, Linden, 
 846). Photographed by permission: a, in the Natural History Mu- 
 seum at Vienna ; b, in the Delessert herbarium at Geneva. 
 
INDEX COLLECTIONS 
 
 187 
 
 INDEXES 
 A. COLLECTIONS 
 
 Abrams 
 
 2687. P. villosum 
 2749. P. longispicum 
 3230. P. californicum 
 
 & McGregor 
 
 P. densum 
 
 33, 49. P. longispicum 
 
 Alderson 
 
 705. P. longispicum 
 
 Alexander 
 
 P. Grisebachianum 
 
 Ames 
 
 (1858). P. flavescens 
 
 Anderson 
 
 P. flavescens 
 
 Andrieux 
 
 346. P. calyculatum 
 
 347. P. velutinum 
 
 Anthony 
 
 (1897). P. Townsendi 
 
 Applegate 
 
 (1899). P. densum 
 
 Appun 
 
 1783. P. Appuni 
 
 Arechavaleta 
 
 136. P. falcifrons 
 
 Arsene 
 
 6. P. Forestierae 
 8. P. velutinum 
 
 7, 10. 896. P. brachystachyum 
 
 Aschenborn 
 
 P. velutinum 
 147. P. villosum 
 
 428. P. brachystachyum 
 
 Austin 
 
 (1876). P. ligatum 
 698 pp. P. Libocedri 
 698 pp. P. villosum 
 
 Baker (see Earle) 
 
 203. P. villosum 
 
 2096. P. ceibanum 
 
 2559. P. antillarum 
 
 2602. P. piperoides 
 , Earle & Tracy 
 
 92. P. juniperinum 
 & Nutting 
 
 (1894). P. densum 
 
 (1894). P. villosum 
 Balansa 
 
 2495. P. Meliae 
 
 2496, 3218. P. Liga 
 
 2497. P. Balansae 
 
 2498, 4722. P. piperoides 
 
 3219. P. falcifrons 
 
 3220, 4721. P. Casimiranum 
 
 Balbis see Bertero 
 Baldwin 
 
 307. P. flaveseens 
 
 Ball 
 
 (1882). P. gracile v. 
 
 Bang 
 
 363, 2903. P. undulatum 
 632. P. Brittonianum 
 632 (ii). P. bolivianum 
 657, 1717. P. crassifolium 
 
 Barber (see Townsend) 
 (1901). P. villosum 
 
 Barkelew 
 
 177. P. Townsendi 
 
 Barnes & Land 
 284. P. carneum 
 
 Bartlett 
 
 6. P. flavescens 
 
 Baur 
 
 286. P. Henslovii 
 Beardslee & Kof oid 
 
 (1891). P. flavescens 
 
188 
 
 THE GENUS PHOEADENDEON 
 
 Belanger 
 
 130. P. martinieense 
 
 131. P. hexastichum 
 Bentham herbarium 
 
 P. Tonduzii 
 Berg 
 
 (1904). P. villosum 
 Berlandier 
 
 P. brachystachyum 
 678, 2088. P. Engelmanni 
 1158. P. velutinum 
 1364. P. tomentosum 
 
 Berlin herbarium 
 
 P. velutinum 
 Bertero 
 
 , 8, 1234. P. antillarum 
 
 P. mucronatum 
 
 P. racemosum 
 
 P. tetrapterum 
 
 , (1820). P. trinervium 
 439 pp. P. anceps 
 439 pp. P. chrysoearpum 
 710, (1821). P. dichotomum 
 
 Bessey 
 
 (1875). P. villosuir 
 
 Beyrich 
 
 P. piperoides 
 
 (1834). P. flavescens 
 Bidwell 
 
 (1890). P. villosum 
 Bigelow 
 
 , 77. P. flavescens 
 
 (1853-4), 5, 5a. P. calif ornicum 
 
 (1853-4). P. calif ornicum v. 
 
 (1853-4). P. Havardianum 
 
 (1854). P. villosum 
 
 (1854), 2. P. pauciflorum 
 
 1 pp. P. Libocedri 
 
 1 pp. P. densum 
 
 3, 6. P. juniperinum 
 
 3 pp. P. macrophyllum 
 
 7. P. villosum v. 
 
 8, 9. P. Coryae 
 Biltmore herbarium 
 
 4339a, P. flavescens 
 
 Bioletti (see Michener) 
 1892. P. villosum 
 
 Biolley 
 
 (1892), 7072, 7078, P. piperoides 
 
 Bischoff 
 
 P. juniperinum 
 (1871). P. calif ornicum 
 
 Bitting 
 
 1079. P. flaveseens 
 
 Blanchet 
 
 P. bathyoryctum 
 
 Blankinship 
 
 (1891). P. villosum 
 
 Blasdale 
 
 1019. P. villosum 
 Bloomer 
 
 (1863-4). P. ligatum 
 Blumer 
 
 (1905). P. Cockerellii 
 (1906), 1524, 1957, 1989, 
 
 P. capitellatum 
 95, 105, 109, 110, 1532, 1956, 1990. 
 
 P. juniperinum 
 129, 197, 1514, 1516, 1521, 1976, 
 
 3601. P. Coryae 
 
 1520, 1523, 1533, 1946. P. macro- 
 phyllum 
 
 1517, 1534-5. P. macrophyllum f. 
 1531. P. Coryae f. 
 Bolander 
 
 (1866). P. ligatum 
 
 2670. P. longispicum 
 
 2671. P. villosum 
 Boldingh 
 
 1660. P. trinervium 
 
 Bonpland 
 
 1795. P. quadrangulare 
 3508. P. angustifolium 
 3798. P. viscifolium 
 3808. P. piperoides 
 
 Bosc 
 
 P. flavescens 
 
 Botteri 
 
 873. P. nervosun 
 
INDEX COLLECTIONS 
 
 189 
 
 Boundary Survey 
 
 1235. P. Bolleanum 
 
 1236. P. californieum v. 
 Bourgeau 
 
 572. P. brachystachyum 
 
 782, 1004, 1116. P. velutinum 
 
 1473, 1483, 2546, 3034. P. nervo- 
 sum 
 
 1482. P. Wawrae 
 
 1962, 2175. P. piperoides 
 Brace 
 
 3428, 4643. P. rubrum 
 
 4461. P. trinervium 
 
 5325. P. Northropiae 
 Brainerd 
 
 (1911). P. flavescens 
 
 Brandegee 
 
 (1879), 1234. P. juniperinum 
 
 (1889, 1892). P. ealifornieum 
 
 (1889, 1892). P. Coryae 
 
 (1889). P. Diguetii 
 
 (1889). P. peninsulare 
 
 (1889). P. saccatum 
 
 (1892). P. globuliferum 
 
 (1892). P. tumidum 
 
 (1893). P. Libocedri 
 
 (1893). P. pauciflorum 
 
 (1904). P. Guazumae 
 
 512. P. Eduardi 
 Braunton 
 
 792. P. longispicum 
 
 1258. P. villosum 
 Brendel 
 
 (1860). P. flaveseens 
 Brenes 
 
 14406, 14519. P. gracilispicum 
 
 14407. P. Tonduzii 
 
 Brewer 
 
 113. P. longispicum 
 564. P. villosum 
 865. P. deneum 
 
 Britton (see Harris) 
 (1892). P. flavescens 
 165, 1950, 1985, 2052, 2119, 2840, 
 3668. P. antillarum 
 
 Britton continued 
 180, 3968. P. flavens 
 355. P. Wattii 
 807, 1895, 1927, 3068, 3795, 3905. 
 
 P. domingense 
 813. P. tetrapterum 
 965, 977, 1467, 3144, 3215. P. Grise- 
 
 bachianum 
 
 1985, 2119, 2415. P. antillarum v. 
 2687. P. piperoides 
 2991, 3283, 3668. P. gracile 
 3703, 3734, 3765, 3773. P. Camp- 
 
 bellii 
 
 & Brace 
 
 832. P. rubrum 
 , Britton & Cowell 
 10241. P. antillarum 
 13106. P. Gundlachii 
 
 - & Marble 
 
 1946. P. chrysocarpum 
 & Wilson 
 5579. P. antillarum 
 
 - & Cowell 
 
 1293. P. trinervium 
 
 1301, 1352. P. chrysocarpum 
 
 12553. P. antillarum 
 
 - & Shafer 
 
 12919. P. antillarum v. 
 12928. P. piperoides 
 , Earle & Wilson 
 4585, 4687. P. antillarum 
 
 - & Hollick 
 1861. P. Fici 
 
 1890. P. domingense 
 2772. P. Grisebachianum 
 
 & Marble 
 
 2245. P. antillarum 
 2248. P. trinervium 
 
 & Millspaugh 
 
 5867, 6325. P. rubrum 
 
 & Shafer 
 1640. P. Helleri 
 1644. P. antillarum 
 1831. P. chrysocarpum 
 1844. P. trinervium 
 
190 
 
 THE GENUS PHORADENDRON 
 
 Britton, Stevens & Hess 
 2470, 4888. P. piperoides 
 2535, 2569. P. racemosum 
 2564. P. tetrapterum 
 
 & Wilson 
 
 4886, 5644. P. antillarum 
 
 Broadhead 
 
 (1887). P. Engelmanni 
 
 Broadway 
 
 1019. P. flavens v. 
 
 1021, 1894. P. hexastiehum 
 
 1021b, 1873, 3982. P. piperoides 
 
 2596. P. martinicense 
 Brown (see Heller) 
 
 51. P. Grisebachianum 
 
 114. P. flavescens 
 
 394. P. antillarum 
 
 921. P. longispicum 
 
 953. P. viUosum 
 
 Bruce 
 
 687. P. Libocedri 
 
 1786. P. villosum 
 Brummel see Wright 
 Buchtieu 
 
 163, 1411. P. semiteres 
 
 3156. P. Kuntzei 
 Buck 
 
 319. P. mucronatum 
 
 454. P. dichotomum 
 Buckley 
 
 P. flavescens 
 Burchell 
 
 2129. P. linearifolium 
 
 3124, 3165. P. crassifolium 
 
 3313. P. piperoides 
 
 4396. P. undulatum 
 
 4559. P. craspedophyllum 
 Burrall 
 
 1125. P. Coryae 
 
 1126. P. macrophyllum 
 1127-9. P. juniperinum 
 
 Bush 
 
 (1899), 526. P. flavescens 
 1160. P. flavescens v. 
 
 Butler 
 
 565. P. villosum 
 
 1071. P. densum 
 Buysman 
 
 (1883). P. flavescens 
 Campbell 
 
 (1896), 6384, 6400. P. gracile 
 
 6383, 6387, 6398 pp., 6581, 6604-5, 
 6676, 6714, 6781, 7264, 8138, 9568, 
 10175. P. domingense 
 
 6385-6, 6401. P. Wattii 
 
 6398 pp., 6604. P. Campbellii 
 de Campos Novaes 
 
 417 pp. P. campinense 
 
 417 pp. P. crassifolium 
 Canby 
 
 (1869). P. macrotomum 
 
 (1880). P. flavescens 
 Carter see Small 
 Catesby 
 
 P. rubrum 
 
 Chadbourne 
 
 P. flavescens 
 Chamberlain 
 
 P. densum 
 
 Chandler (see Hall) 
 (1897) P. longispicum 
 5456 pp. P. californicum 
 5456 pp., 6043. P. villosum 
 
 Chesnut 
 
 595 P. villosum 
 
 Christ 
 
 1960. P. racemosum 
 2096. P. dichotomum 
 2232. P. piperoides 
 
 von Christman 
 
 P. carneum 
 Clark 
 
 (1857). P. flavescens 
 Clarke 
 
 1-5. P. villosum 
 Claussen 
 
 , 44-5. P. piperoides 
 
INDEX COLLECTIONS 
 
 191 
 
 Clausssen continued 
 43. P. crassifolium 
 113, 252. P. emarginatum 
 
 Clendon 
 
 (1871). P. ligatum 
 
 Coffman 
 
 (1913). P. densum 
 
 Cohoon 
 
 7. P. Coryae 
 Coker 
 
 (1911). P. flavescens 
 
 303, 558. P. rubrum 
 Combs 
 
 299. P. antillarum 
 
 347-8. P. rubrum 
 Congdon 
 
 (1903). P. Libocedri 
 
 (1903). P. pauciflorum 
 Conzatti 
 
 (1897). P. Conzattii v. 
 
 (1913). P. carneum 
 
 2124. P. brevifolium 
 
 2198. P. brachystachyum 
 
 2199. P. Eobinsonii 
 
 & Gomez. 
 
 2380. P. Conzattii 
 
 & Gonzalez 
 
 72. P. brachystaehyum 
 
 295. P. calyculatum v. 
 
 1187. P. Conzattii v. 
 - & Vasquez 
 
 1476. P. brachystachyum 
 Cooper 
 
 (1860-1861). P. calif ornicum v. 
 
 (1861). P. villosum v. 
 
 593.1. P. Cooperi 
 Copeland 
 
 3542. P. densum 
 Cory 
 
 (1911). P. Coryae 
 Coues & Palmer 
 
 323. P. Coryae 
 Coulter 
 
 21. P. velutinum 
 
 Coville 
 
 1074, 1915. P. Coryae 
 
 1351. P. ligatum 
 
 1352. P. densum 
 1617. P. calif ornicum 
 1946. P. juniperinum 
 
 & Funston 
 
 130, 589. P. densum 
 
 279. P. calif ornicum v. 
 
 307. P. ligatum 
 
 1192. P. pauciflorum 
 
 1729. P. Libocedri 
 Cowell (see Britton) 
 
 626. P. racemosum 
 
 753. P. antillarum 
 Cowen 
 
 (1892). P. juniperinum 
 Crawford 
 
 783. P. Grisebachianum 
 Crueger 
 
 111, 2720. P. flavens v. 
 
 305. P. trinervium 
 
 1649, 2724. P. piperoides 
 Cuming 
 
 (1823). P. flaveseens 
 
 184. P. angustifolium 
 Curran 
 
 (1886). P. Libocedri 
 Curtis 
 
 (1852). P. flavescens 
 Curtiss 
 
 (1872). P. flavescens 
 
 2459, 4569. P. maerotomum 
 Cusick 
 
 2637. P. ligatum 
 
 2760a. P. densum 
 Czermak & Eeineek 
 
 199. P. bathyoryctum 
 
 312, 637. P. ensifolium 
 
 367. P. piperoides 
 Darlington 
 
 P. flavescens 
 Darwin 
 
 (1835). P. galapageium 
 
 (1835). P. Henslovii 
 
192 
 
 THE GENUS PHORADENDRON 
 
 Davidson 
 
 (1898). P. flavescens 
 
 5929. P. californicum 
 Davis see Pammel 
 Davy 
 
 45. P. ealifornieum 
 
 205, 2603. P. densum 
 
 551. P. villosum 
 
 2027. P. paueiflorum 
 
 de la Ossa 
 
 (1825). P. hexastichum 
 
 de la Sagra 
 
 P. antillarum 
 de Pedeguara 
 
 2690. P. amplifolium 
 
 Deam 
 
 6099. P. robustissimum v. 
 Dean 
 
 P. flavescens 
 Department of Agriculture 
 
 P. californicum 
 Dewey 
 
 P. californicum v. 
 
 644. P. piperoides 
 Diedrick 
 
 118. P. flavescens 
 Diehl 
 
 296. P. juniperinum 
 
 570. P. Coryae 
 Diguet 
 
 (1894). P. Diguetii 
 
 107. P. carneum 
 
 108. P. Reiehenbachianum 
 
 109. P. brachystachyum 
 111. P. calyculatum v. 
 
 Dodson 
 
 (1896). P. flavescens 
 Douglass 
 
 (1887). P. juniperinum 
 Drake 
 
 15115. P. Coryae 
 
 15116-7, 15120, 15121. P. macro- 
 phyllum 
 
 15118. P. capitellatum 
 
 Drew 
 
 (1889). P. villosum 
 
 Drummond 
 
 140. P. flavescens 
 
 du Barry 
 
 (1865). P. coloradense 
 
 Ducke 
 
 2513. P. crassif oaum 
 2530b. P. piperoides 
 
 Duges 
 30, 266a. P. carneum 
 
 Don 
 
 100, 4156. P. mucronatum 
 
 101 pp., 1374b pp., 2966, 2969 pp., 
 
 3902 pp., 4418 pp. P. chrysocar- 
 
 pum 
 
 101 pp., 2969 pp., 4418 pp. P. pi- 
 peroides 
 102, 960, 1373, 2968 pp., 4099, 4417. 
 
 P. trinervium 
 1374b pp., 2969 pp., 3891, 3902 pp., 
 
 3904, 413 7a. P. martinieense 
 1375, 4137, 4415. P. hexastichum 
 2966 pp., 3904 pp., 4157, 4418 pp. 
 
 P. Herminieri 
 2968 pp., 2969 pp., 3904 pp., 4099 
 
 pp., 4417 pp. P. Dussii 
 
 Earle see Baker; Tracy; Underwood 
 
 & Baker 
 
 (1897). P. flaveseens 
 
 & Tracy 
 
 334. P. juniperinum 
 
 Eastwood 
 
 (1894). P. villosum v. 
 (1896), 3542. P. densum 
 (1897-8). P. pauciflorum 
 
 Eaton 
 
 1310. P. Eatoni 
 
 Eby 
 
 P. macrophyllum 
 
 (1888, 1893, 1894). P. flavescens 
 
 Edgerton 
 
 P. flavescens 
 
INDEX COLLECTIONS 
 
 193 
 
 Edmunds 
 
 P. flavescens 
 Eggers 
 
 93, 965, 1651, 1983, 3328, 4782. P. 
 antillarum 
 
 661, 946, 6398. P. flavens v. 
 
 880 pp., 926, 1147. P. chrysocarpum 
 
 880 pp., 1741, 2011. P. racemosum 
 
 1400, 4668, 4724, 4902, 6077, 6396. 
 P. piperoides 
 
 1682. P. aneepa 
 
 1845. P. dichotomum v. 
 
 1899. P. hexastichum 
 
 3847, 3877. P. rubrum 
 
 6140. P. hexastichum v. 
 
 7060. P. trinervium 
 
 13335. P. Ottonia 
 
 14829. P. quadrangulare 
 
 15229. P. Eggersii 
 Eggert 
 
 (1892, 1896), 450. P. flavescens 
 Ehrenberg 
 
 P. tomentosum 
 
 13. P. antillarum 
 
 422 pp. P. brachystachyum 
 
 422 pp. P. velutinum 
 
 1011. P. pachyarthron 
 Elmer 
 
 1758, 3794. P. villosum 
 
 3607. P. densum 
 Emanuel 
 
 1. P. antillarum 
 
 Endlich 
 
 634, 1048. P. velutinum 
 
 689. P. calif ornicum v. 
 
 1138. P. nervosum 
 
 1164. P. ligatum 
 
 1170, 1220, 1267. P. puberulum v. 
 
 1219. P. Schumann! 
 
 1222. P. Bolleanum 
 
 1895. P. Eobinsonii 
 
 1899. P. brachystachyum 
 
 1899a. P. Forestierae 
 Endres 
 
 139. P. supravenuloaum 
 
 Engelmann 
 
 P. Coryae 
 
 P. densum 
 P. villosum 
 
 1840), 706. P. flavesceng 
 (1880). P. calif ornieum 
 (1880). P. Libocedri 
 (1880). P. macrophyllum 
 707. P. flavescens v. 
 
 & Sargent 
 
 (1880). P. calif ornicum v. 
 (1880). P. densum 
 
 Faxon 
 
 (1873). P. flavescens 
 Fendler 
 
 P. flavescens 
 
 112, 136, 654. P. piperoides 
 281. P. juniperinum 
 651, 1117, 1341, 1810. P. venezue- 
 lense 
 
 1102. P. Fendlerianum 
 
 1103. 1103|8. P. pachyphyllum 
 
 1104. P. polygynum 
 
 1105. P. rigidum 
 
 1106. P. tubulosum 
 
 1108. P. ovalifolium 
 
 1109. P. gracilispicum 
 
 1110. 1111, 1761. P. tovarense 
 1115. P. cuneifolium 
 
 1762. P. longipetiolatum 
 1811. P. bilineatum 
 2396. P. crassifolium 
 
 Ferriss 
 
 P. californieum v. 
 
 P. Engelmanni 
 
 P. juniperinum 
 
 P. macrophyllum 
 Fiebrig 
 
 32, 4981. P. obovatifolium 
 51, 511. P. piperoidea 
 2174. P. tucumanense 
 Field Museum herbarium 
 
 P. Greggil 
 Finley 
 
 (1900). P. villosum 
 
194 
 
 THE GENUS PHORADENDRON 
 
 Fitch (see Rose; Shafer) 
 (1849). P. villosum 
 
 Foeke 
 
 P. racemosum 
 716. P. dimidiatum 
 1019. P. obtusissimum 
 
 Frank 
 
 (1835, 1837). P. flaveseens 
 Fraser 
 
 (1860). P. Verleyseni v. 
 Fredholm 
 
 6474. P. macrotomum 
 Fremont 
 
 106. P. macrophyllum 
 Friedriehsthal 
 
 (1841). P. robustissimum v. 
 
 (1841). P. Tonduzii 
 
 1625. P. tamaulipense 
 Fuertea 
 
 240, 1175, 1393. P. mucronatum 
 
 275, 927. P. cerinocarpum 
 
 383, 827. P. antillarum 
 
 1531b. P. Helleri v. 
 Funcko 
 
 295. P. Ottonis 
 Funston see Coville 
 Gabriel 
 
 (1802). P. Perrottetii 
 
 (1802). P' piperoides 
 Galeotti 
 
 2692. P. brachystachyum 
 
 2694. P. Galeottii 
 
 2695. P. piperoides 
 
 2696. P. calyculalum 
 Garber 
 
 24. P. antillarum 
 Gardner 
 
 436. P. nitidum 
 
 1028, 1321, 1323, 1673-4, 2619. P. 
 Martianum 
 
 1029, 3205. P. strongyloclados 
 
 1319, 2625. P. coriaeeum 
 
 1320, 1678, 1960. P. piperoides 
 2617. P. piauhyanum 
 
 Gardner continued 
 
 1324-5. P. microphyllum 
 1669. P. cearense v. 
 1670-1. P. emarginatum 
 1672. P. dipterum 
 1673-4. P. Wiesnerianum 
 
 1675. P. cearense 
 
 1676. 1679. P. productipes 
 
 1677. P. pteroneuron 
 
 1680, 2618, 2621, 2626,3762-3,3765. 
 
 P. bathyoryctum 
 1958. P. tunaeforme 
 2620, 2881. P. crassifolium 
 2622. P. craspedophylloides 
 2885. P. Gardnerianum 
 
 3764, "3765." P. congestum 
 
 3765. P. maerarthrum 
 Gaudichaud 
 
 (1833), 473, 573. P. ulophyllum 
 
 567. P. Martianum 
 
 574. P. acinaeifolium 
 Gaumer 
 
 561 pp. P. Gaumeri 
 
 561 pp. P. yucatanum 
 
 876. P. verniccsum 
 Gilbert 
 
 (1873). P. calif ornicum 
 
 (1874). P. Coryae 
 
 (1883). P. macrotomum 
 
 104. P. macrophyllum 
 Gillies 
 
 P. Liga 
 Girard 
 
 P. Coryae 
 
 P. juniperinum 
 Glaziou 
 
 1428, 1431, 1432, 4008, 7661. P. pi- 
 peroides 
 
 1432-3, 1460, 4004 pp., 4005, 7666, 
 14884. P. crassifolium 
 
 1462. P. pteroneuron 
 
 2598 pp., 8728, 14887 pp. P. Mar- 
 tianum 
 
 2598, 8728. P. microphyllum 
 
 4003, 6893, 8243. P. undulatum 
 
 4004 pp. P. Glaziovil 
 
INDEX COLLECTIONS 
 
 195 
 
 Glaziou continued 
 
 4009, 7663, 8730. P. ulophyllum 
 
 4010. P. coriaceum v. 
 
 4012. P. Warmingii 
 
 4013. P. nitidum 
 6073. P. acinacifolium 
 7664. P. chrysocladon 
 8729. P. holoxanthum v. 
 
 9419, 9468, 12032-3, 13926. P. line- 
 
 arifolium 
 
 9861, 14887, P. emarginatum 
 10898, 11608, 22023. P. fragile 
 139-ua. P. platycaulon 
 22021. P. Crulsii 
 22024. P. tunaeforme 
 Gleason 
 
 (1902). P. flavescens 
 
 Goldman 
 
 178. P. ligatum 
 Gollmer 
 
 (1854). P. granaticolum 
 
 (1854). P. venezuelense 
 
 (1855). P. caracasanum 
 
 (1856). P. cymosum 
 Gomez see Conzatti 
 Gonzalez see Conzatti 
 
 Goodding (see Kennedy) 
 
 725 pp. P. californicum v. 
 
 725 pp., 884, 1026 pp. P. juniperi- 
 num 
 
 1026 pp., 2135, 2139. .P. californi- 
 cum 
 
 2149. P. Bolleanum 
 
 Graham 
 
 (1911). P. flavescens 
 231. P. brachystachyum 
 233. P. Eeichenbachianum 
 
 Grant 
 
 977, 4517 pp. P. Libocedri 
 4517 pp., 4533. P. villosum 
 
 & Wheeler 
 
 979, 6243. P. villosum 
 
 Graves 
 
 1697. P. longispicum 
 
 Gray 
 
 (1842). P. macrotomum 
 Greene 
 
 (1880). P. californicum 
 
 (1880). P. capitellatum 
 
 (1880). P. Coryae f. 
 
 (1880). P. juniperinum 
 Greenman 
 
 120. P. commutatum 
 
 1140. P. vernieosum 
 Gregg 
 
 31, 254. P. Greggii 
 
 255. P. lanceolatum 
 
 399. P. saltillense 
 
 722. P. Eeichenbachianum 
 
 725. P. brachystachyum 
 
 745. P. carneum 
 
 895. P. puberulum 
 
 903. P. commutatum 
 
 1202. P. mazatlanum 
 Gregory 
 
 (1890). P. villosum 
 Griffiths 
 
 (1912), 2019, 3539. P. californicum 
 
 (1912). P. longispieum 
 
 1797, 2678, 3644, 3676. P. macro- 
 phyllum 
 
 2616, 3454. P. Coryae 
 
 3674, 6144. P. macrophyllum f. 
 
 11135. P. juniperinum 
 & Hunter 
 
 405. P. ligatum 
 - & Thornber 
 
 191. P. macrophyllum v. 
 
 205. P. californicum 
 Griggs see Underwood 
 Grinnell 
 
 399, 402. P. longispicum 
 Grisebach herbarium 
 
 P. nervosum 
 
 P. piperoides 
 Guedes 
 
 2365. P. piperoides 
 Guilding 
 
 P. flavens v. 
 
196 
 
 THE GENUS PHORADENDRON 
 
 Guilding continued 
 
 P. hexastiehum 
 
 P. trinervium 
 
 Guillemin 
 
 43. P. crassifolium 
 
 185. P. Martianum 
 
 1472. P. chrysocarpum 
 Habel 
 
 (1868). P. Henslovii 
 Haenke 
 
 P. obliquum 
 
 P. piperoides 
 
 P. quadrangulare 
 Hahn 
 
 (1865-6). P. Purpusi 
 
 (1865-6). P. Eobinsonii 
 
 296, 1383, 1385. P. mucronatum 
 
 298. P. martinicense 
 
 550, 783, 1132. P. chrysocarpum 
 
 1386. P. hexastiehum 
 
 410. P. velutinum 
 
 456. P. villosum 
 Hall 
 
 2531. P. villosum 
 
 2565. P. Libocedri 
 
 6014. P. californicum 
 & Chandler 
 
 527. P. Libocedri 
 Hansen 
 
 (1887), 74, 721 pp. P. Libocedri 
 
 (1897). P. gracile 
 
 (1897). P. Grisebachianum 
 
 720. P. villosum 
 
 721 pp. P. ligatum 
 
 1310. P. antillarum 
 Harper 
 
 1888. P. flavescens 
 Harris 
 
 6203. P. flavens 
 
 6341, 6376, 6397, 10202, 10861. P. 
 Grisebachianum 
 
 6384, 6392, 6400, 6544, 6585, 6661. 
 P. gracile 
 
 6393, 6545, 6576, 6926. P. tetrap- 
 terum 
 
 Harris continued 
 
 6395, 6402, 6599, 6680, 6711, 969". 
 
 P. Wattii 
 6383, 6552, 6781, 7264, 10175. P. 
 
 domingense 
 
 6577, 6584, 6927. P. antillarum 
 6659. P. crenulatum 
 9220. P. Fiei 
 10188. P. Wattii f. 
 10339. P. piperoides 
 - & Britton 
 10519. P. Wattii 
 10529. P. trinervium 
 
 Harshbergcr 
 
 1912. P. Eatoni 
 Hart 
 
 (1896). P. trinervium 
 
 6101. P. Hartii 
 
 6116. P. venezuelense 
 
 6118. P. piperoides 
 Hartman 
 
 944. P. capitellatum 
 
 945. P. californicum v. 
 
 946. P. macrophyllum f. 
 Harvey 
 
 (1829). P. trinervium 
 Hasse 
 
 P. densum 
 
 P. flavescens 
 
 (1889, 1893), 4626. P. longispicum 
 Hassler 
 
 191. P. acinaeifolium 
 
 298. P. obovatifolium 
 
 913, 6364. P. piperoides 
 
 2732, 7551. P. Liga 
 
 7436. P. Balansae v. 
 Havard 
 
 (1881). P. Cockerellii 
 
 82, 84. P. Havardianum 
 
 83. P. Bolleanum 
 Hay see Eose 
 Hayes 
 
 323, 829. P. venezuelense 
 616. P. piperoides 
 
INDEX COLLECTIONS 
 
 197 
 
 Haynald herbarium 
 P. chrysocarpuin 
 
 Heald 
 
 (1909, 1911). P. Engelmanni 
 
 Hedge ock 
 
 422, 427. P. Engelmanni 
 
 784, 1512, 1654-5, 3993, 4911, 4939, 
 
 8136, 9319, 9833, 15980. P. juni- 
 
 perinum 
 
 841, 9953. P. Cockerellii 
 815-7, 842-3, 4853, 4872-3, 4916, 
 
 41)21-2, 4940, 9860, 15100, P. Co- 
 
 ryae 
 
 1893, 1896, 4840. P. villosum 
 1895, 1898. P. Liboeedri 
 4915. P. densum 
 
 4923. P. longispicum 
 
 4924, 4933. P. macrophyllum 
 8269. P. tiavescd-ja 
 
 9685. P. capitellarum 
 
 & Long 
 
 4829, 9720. P. paueiflorum 
 9677-8, 9686, 9688, 9830-32, 9855. P. 
 
 Ccryae 
 
 9692. P. macrophyilum 
 9696. 9814. P. californicum 
 9815. P. californicum v. 
 9817, 9854, 9862. P. juniperinum 
 9861. P. Cockerellii 
 
 & Meinecke 
 
 4805, 4830. P. Libocedri 
 4829. P. paueiflorum 
 Hedrick 
 
 180. P. jumperiiittm 
 
 181. P. Coryae 
 Heller (see Snodgrass) 
 
 (1896). P. californicum 
 205, 6186. P. antiUarum 
 514. P. racemosum 
 750. P. flavescens 
 1376. P. Engelmanni v. 
 3534. P. juniperinum 
 6161. P. trinervium 
 6188. P. Helleri 
 10464. P. californicum v. 
 
 Heller & Brown 
 
 5036. P. villosum 
 Henry 
 
 (1890). P. fiavescens 
 Herrick 
 
 133. P. Coryae 
 
 985. P. juniperinum 
 Hess (see Britton) 
 
 675. P. hexastiehum 
 
 1913. P. piperoides 
 
 5402. P. antillarum 
 Heyde & Lux 
 
 3140. P. Heydeanum 
 
 3141. P. uspantanum 
 Hieronymus (see Lorentz) 
 
 (1873), 421. P. Hieronymi 
 419. P. argentinum 
 729. P. Liga 
 
 & Lorentz 
 
 237. P. argentinum 
 
 & Niederlein 
 (1878). P. crassif olium 
 165. P. pruinosum 
 
 Hillebrand 
 
 (1863). P. villosum 
 Hillman 
 
 11715. P. ligatum 
 Hinds 
 
 (1841). P. Robinsonii 
 Hioram 
 
 (1912). P. antillarum 
 Hitchcock 
 
 (1890). P. antillarum 
 
 (1890). P. rubrum 
 
 (1890). P. Wattii 
 Hoffmann 
 
 219. P. Cooperi 
 
 360. P. robustissimum 
 
 378. P. ceibanum 
 
 809. P. gracilispicum 
 Holliek (see Brittoa) 
 
 (1880). P. viUosum 
 Holmes 
 
 (1906). P. paueiflorum f. 
 
198 
 
 THE GENUS PHORADENDRON 
 
 Holstein 
 
 P. Engelmanni 
 
 Holton 
 
 654-5. P. Eoltonis 
 656. P. quadrangulare 
 
 Hooker herbarium 
 
 P. ehrysocarpum 
 
 P. flavens v. 
 Hopkins see Munson 
 
 Hopping 
 
 263. P. longispicum 
 
 264. P. villosum 
 
 Horn 
 
 (1863). P. villosum 
 
 Hostmann (& Kappler) 
 729 P. piperoides 
 
 Hottes 
 
 (1914). P. juniperinum 
 (1914). P. Libocedri 
 (1914). P. villosum 
 
 Hough 
 
 P. densum 
 
 18, 87. P. juniperinum 
 
 Howell 
 
 (1884, 1887). P. Libocedri 
 (1884), 1264. P. villosum 
 
 Huber 
 469. P. affine 
 
 Hulst 
 
 (1893). P. flavescens 
 
 Humboldt 
 
 P. minutif olium 
 
 Hunter see Griffiths 
 
 Hutchens 
 
 (1900). P. Libocedri 
 (1900). P. villosum 
 
 Im Thurn 
 
 (1897). P. raesmosum 
 
 Imray 
 
 P. trinervium 
 212. P. chrysocarpum 
 216, 386. P. flavens v. 
 
 Isert 
 
 (1787). P. tetrapterum 
 (1787). P. trinervium 
 
 Jack 
 
 (1907). P. villosum 
 
 James 
 
 (1879). P. longispicum 
 
 Jameson 
 
 P. parietarioides 
 608. P. Verleyseni 
 
 Jenman 
 
 650, 1218, 2221, 2545, 3781, 3868, 
 
 4747. P. piperoides 
 1217, 2533, 3628, 7433. P. crassi- 
 
 folium 
 
 2218, 4055. P. racemosum 
 2247, 3795, 4821. P. Perrottetii 
 2252. P. essequibense 
 2539, P. obtusissimum 
 
 2541, 4678. P. Jenmani 
 
 2542. P. carinatum 
 2546. P. demerarae 
 3801. P. apertum 
 
 Jepson 
 
 (1894). P. longispicum v. 
 
 (1894). P. villosum 
 
 (1894, 1904). P. longispicum 
 
 Jenny 
 
 (1904). P. Engelmanni 
 (1904). P. Engelmanni v. 
 
 Johnson 
 
 8270, 8279. P. juniperinum 
 
 Johnston 
 
 10. P. Johnston! 
 
 Jones 
 
 (1882), 3703. P. densum 
 
 (1882), 3028. P. villosum 
 
 (1884, 1905, 1906, 1907). P. calif or- 
 
 nicum 
 
 (1884, 1903). P. capitellatum 
 (1884). P. Cockerellii 
 (1884). P. coloradense 
 (1900), 2081, 2095aa, 4041, 6045. 
 
 P. juniperinum 
 (1900). P. pauciflorum 
 
INDEX COLLECTIONS 
 
 199 
 
 J ones continued 
 
 (1903). P. Bolleanum 
 
 (1903). P. ligatum 
 
 (1903), 4041, 4253. P. Coryae 
 
 (1903, 1904), 5013. P. calif ornicum 
 v. 
 
 (1903). P. puberulum v. 
 
 570. P. carneum 
 
 3028. P. longispicum 
 
 3734. P. villosum 
 
 4279, 4281. P. macrophyllum v. 
 Jon ea herbarium 
 
 2469. P. flavescens 
 Joor 
 
 P. Engelmanni 
 
 Jordan 
 
 8296, 8332. P. villosum 
 
 Kalbreyer 
 
 353. P. gracilispicum 
 Kappler see Hostmann 
 Karsten 
 
 P. polygynum 
 
 5. P. paradoxum 
 Karwinski 
 
 (1833). P. longifolium 
 
 (1844). P. Schumann! 
 
 P. calyculatum 
 
 P. Eobinsonii 
 
 P. tamaulipense 
 Kearney 
 
 2356. P. flavescens 
 Kellerman 
 
 4541. P. velutinum 
 
 4551, 4829. P. vulcanieum 
 
 4720. P. eommutatum 
 
 5100. P. robustissimum v. 
 
 5154-5. P. multiflorum 
 
 5604, 5612, 5728, 5972. P. zacapa- 
 num 
 
 5822. P. piperoides 
 Kellogg 
 
 (1909). P. flaveseens v. 
 Kennedy & Goodding 
 
 57. P. calif ornicum v. 
 
 Kerber 
 34, 351. P. nervosum 
 
 87. P. Kobinsonii 
 
 88. P. brachystachyum 
 301. P. piperoiden 
 1990. P. tamaulipense 
 
 Killingsworth 
 
 (1915). P. flavescens 
 
 Kirkwood (see Lloyd) 
 147. P. tomentosum 
 
 Knieskern 
 
 P. flavescens 
 
 Knoop 
 
 iii. P. venezuelense 
 
 iii b. P. Knoopii 
 Knowlton 
 
 188. P. juniperinum 
 
 Kofoid seo Beardslee 
 
 Korthala 
 
 (1843). P. fiavescens 
 
 Krebs 
 101. P. flavescens 
 
 Krug 
 
 537. P. chrysocarpum 
 
 538. P. antillarum 
 
 Kuntze 
 
 (1874). P. villosum 
 
 P. afline 
 
 3, 4, 36. P. bathyoryctum 
 
 5. P. Liga 
 
 6. P. Meliae 
 
 9. P. hypericif olium 
 
 10. P. falcifrons 
 
 15. P. reductum 
 
 16, 17, 679. P. piperoides 
 18, 19. P. emarginatum 
 20. P. Kuntzei 
 
 219, 415. P. racemosum 
 426. P. tetrapteruia 
 495. P. antillarum 
 1597. P. tubulosum 
 3168. P. densum 
 23231. P. juniperinum 
 
200 
 
 THE GENUS PHOEADENDEON 
 
 Kurtz 
 
 6772, 8434. P. Liga 
 
 6783. P. Hieronymi 
 
 6784. P. Balansae 
 Land see Barnes 
 
 Lapham 
 
 1874. P. flavescens 
 
 Lay 
 
 (1903). P. Coekerellii 
 
 L 'Herminier 
 
 a. P. Herminieri 
 Le Jolis herbarium 
 
 P. Ottonis 
 871. P. antillarum 
 
 Lehmann 
 
 3565, 8538. P. gracilispicum 
 
 6667. P. Trianae 
 Leiberg 
 
 285. P. ligatum 
 
 3150. P. Libocedri 
 
 3152. P. pauciflorum 
 
 3161. P. densum 
 
 3215. P. longispieum 
 
 Leibold 
 
 P. piperoides 
 Lemmon (see Parry) 
 
 (1875, 1879). P. Libocedri 
 (1875, 1879). P. ligatum 
 (1875). P. villosum 
 
 266. P. capitellatum 
 
 267. P. ealifornicum v. 
 Leprieur 
 
 97, 194-5. P. Perrottetii 
 Levy 
 
 1293. P. ceibanum 
 
 Lewers 
 
 (1892). P. Libocedri 
 
 P. ligatum 
 
 Liebmann* 
 
 P. piperoides 
 
 2, 3098-9, 3100. P. commutatum 
 
 Liebmann continued 
 
 3, 3089, 5, 3090. P. nervosum 
 
 4, 3097. P. Purpusi 
 
 6, 3085. P. Oliverianum 
 
 7, 11, 3083. P. braehystaehyum 
 
 8, P. colipense 
 
 9, 3102. P. Eobinsonii 
 
 12, 3080, 13, 3106. P. amplifolium 
 16, 3084. P. brevifolium 
 Lighthipe 
 
 (1897). P. macrotomum 
 
 Lillo 
 
 5414. P. tucumanensc 
 20256. P. Hieronymi 
 
 Lindberg 
 
 253. P. undulatum 
 253a. P. nitidum 
 
 Linden 
 
 43. P. crassifolium 
 538. P. calyeulatum 
 541. P. Galeottii 
 796. P. Briquetianum 
 846. P. Lindeni 
 1960. P. piperoides 
 
 Lindheimer 
 
 115, 227, 406, 445, 1120, 1121, 1122. 
 P. Engelmanni 
 
 Link herbarium 
 P. craspedophylloides 
 
 Lloyd 
 
 (1907). P. calif ornicum 
 (1907). P. macrophyllum 
 147. P. tomentosum 
 
 207. P. Herminieri 
 
 208. P. flavens v. 
 463. P. trinervium 
 765. P. hexastichum 
 
 & Kirkwood 
 
 15. P. tomentosum 
 Lofgren 
 
 799. P. crassifolium 
 
 1074. P. tunaeforme 
 
 *The smaller numbers are the originals, under which the specimens are cited by 
 Oliver ; the others, those of the herbarium sheets as now numbered. 
 
INDEX COLLECTIONS 
 
 201 
 
 Long (see Hedgcock) 
 
 12041. P. Engelmanni v. 
 
 12048. P. flavescens v. 
 
 15103. P. Engelmanni 
 
 15133, 15155-6, 15180-1, 15214, 
 15242. P. macrotomum 
 
 15169. P. flavescens 
 Lorentz see Hieronymus 
 
 344, 395, 431, 471, 478. P. Liga 
 
 364, 432, 468. P. Hieronymi 
 
 382, 688. P. pruinosum 
 
 632, 1779, 1879, 4772. P. falcifrons 
 & Hiernonymus 
 
 219, 420. P. Liga 
 
 223, 235, .335, 782. P. tucumanense 
 Lumholtz 
 
 30. P. californieum 
 Lund 
 
 21. P. bathyoryetum 
 
 385. P. piperoides 
 Lunt 
 
 6117. P. Hartii 
 
 6118. P. piperoides 
 Lusehnath 
 
 P. crassif olium 
 
 (1835). P. piperoicles 
 
 (1839). P. crassif olium v. 
 Lux see Heyde 
 Lyon (see Bobinsou) 
 
 (1900). P. Lyoni 
 
 (1905). P. ligatum 
 Mandon 
 
 1467. P. Mandonii 
 Manning 
 
 58. P. ligatum 
 
 Marble (see Britton) 
 
 231. P. Wattii 
 March 
 
 1316. P. trinervium 
 Marker 
 
 (1901). P. flavescena 
 Martens 
 
 1622. P. crassif olium 
 
 Martin 
 
 P. flavescens 
 
 P. Perrottetii 
 von Martius 
 
 P. acinacifolium 
 
 P. affine 
 
 P. bathyoryctum 
 
 P. coriaceum 
 
 P. crassifolium 
 
 P. emarginatum 
 
 P. habrostachyum 
 
 P. minor 
 
 P. multifoveolatum 
 
 P. platycaulon 
 
 P. tunaeforme 
 Mathews 
 
 (1846). P. Mathewsi 
 
 Matthes 
 
 573. P. Engelmanni 
 
 Matthews 
 
 (1883). P. juniperinum 
 
 Maxon 
 
 1675. P. antillarum 
 4337. P. piperoides 
 
 Mac Dougal 
 
 (1904). P. californieum 
 142. P. juniperinum 
 612. P. macrophyllum 
 
 McCarthy 
 
 P. flaveseens 
 1879. P. flavescens 
 
 McClatchie 
 
 (1893). P. pauciflorum 
 (1893). P. villosum 
 
 McCrory see von Schrenk 
 McFadyen 
 
 P. flavens 
 
 McGregor see Abrams 
 
 McNab 
 
 68. P. trinervium 
 
 Mearns 
 
 164. P. macrophyllum 
 171. P. flavescens v. 
 
202 
 
 THE GENUS PHOEADENDBON 
 
 Mearns continued 
 
 172, 300, 2485, 2529. P. capitella- 
 tum 
 
 391, 1633, 1760, 2395, 2427, 2479, 
 2528, 2643. P. Coryae 
 
 2644. P. calif ornieum v. 
 
 2742, 2894. P. californicum 
 
 3013, 3198. P. densum 
 
 3617, 3767. P. villosum 
 Meek 
 
 (1889). P. flavescens 
 
 Meinecke see Hedgcock 
 Meislahn 
 
 155. P. macrotomum 
 
 Mell 
 
 (1907). P. macrotomum 
 
 Menzel 
 P. Engelmanni v. 
 
 Merton 
 
 2073. P. capitellatum 
 
 Metcalfe 
 
 26, 31. P. Cockerellii 
 
 737. P. juniperinum 
 
 925. P. Coryae 
 
 Mexico see Boundary Survey 
 Meyer 
 
 720. P. piperoidea 
 Michener & Bioletti 
 
 (1893). P. villosum 
 Moeller 
 
 P. piperoides 
 Moore 
 
 534. P. crassifolium 
 
 954. P. affine 
 Morgan see Pollard 
 Moritz 
 
 307. P. venezuelense 
 Morong 
 
 358, 1546. P. acinacifolium 
 
 618. P. Liga 
 
 954. P. Balansae f. 
 
 1582. P. obovatifolium 
 Mueller 
 
 221, 1755. P. brachystachyum 
 
 Mueller continued 
 
 1219. P. nervosum 
 
 1570. P. tainaulipense 
 Muhlenberg 
 
 639. P. flavescens 
 
 Mulford 
 
 141. P. Havardianum 
 374. P. juniperinum 
 670. P. Coryae 
 
 Munro 
 
 15109, 15110. P. Coryae 
 15111, 15112. P. juniperinum 
 
 Munson and Hopkins 
 (1889). P. juniperinum 
 
 Nash 
 
 98. P. mucronatum 
 150a. P. raeemosum 
 633. P. dichotomum 
 - & Taylor 
 
 947, 1021, 1314, 1342. P. rubrum 
 1151. P. dichotomum 
 1251. P. piperoides 
 1322. P. antillarum 
 
 Nealley 
 
 (1890). P. Bolleanum 
 
 Nelson 
 
 1982, 2018. P. amplifolium 
 
 2074. P. calyculatum 
 
 2650. P. commutatum 
 
 4756, 4921. P. Bolleanum 
 Neuwied see Wied-Neuwied 
 Nicholson 
 
 16. P. antillarum 
 
 Niederlein 
 
 95. P. decussatum 
 
 102. P. falcifrons 
 
 171, 1277. P. piperoidea 
 Noack 
 
 P. piperoides 
 Northrop 
 
 451. P. Northropiae 
 
 704. P. raeemosum 
 Nuttall 
 
 P. flaveseena 
 
INDEX COLLECTIONS 
 
 203 
 
 Nuttall continued 
 
 (1834). P. villosum 
 
 (1836). P. calif ornicum 
 Nutting see Baker 
 Oersted* 
 
 1, 3103. P. Eensoni 
 
 3, 3086 pp. P. gracilispicum 
 
 3, 3086 pp. P. piperoides 
 
 4, 14, 3082, 3096. P. annulatum 
 
 5, 3091, 3093. P. Cooperi 
 Orcutt 
 
 P. densum 
 
 234. P. Libocedri 
 
 545. P. paueiflorum 
 
 1310, 2027, 2044. P. californicum 
 v. 
 
 1310a. P. villosum 
 
 2013. P. californicum 
 Otto 
 
 556. P. venezuelense 
 
 565. P. Ottonis 
 Pabst 
 
 554 pp. P. crassifolium 
 
 554 pp. P. piperoides 
 Painter see Rose 
 Palmer (see Coues; Parry) 
 
 (1853-4). P. Balansae 
 
 (1875, 1877). P. juniperinum 
 
 (1876). P. macrophyllum 
 
 21, 81. P. tamaulipense 
 
 79. P. ligatum 
 
 84. P. Schumann! 
 
 85. P. guadalupense 
 88. P. globuliferum 
 103, 291. P. thyrsoideum 
 119. P. Palmeri 
 
 254. P. flavescens 
 270. P. californicum v. 
 
 440. P. villosum 
 
 441. 506, 665. P. californicum 
 
 442. P. densum 
 719. P. carneum 
 
 777. P. tomentosum 
 
 778. P. Bolleanum 
 882. P. Eduardi 
 
 Pammel 
 
 (1888). P. Engelmanni 
 
 & Davis 
 
 114. P. villosum 
 Paris herbarium 
 
 P. platycaulon 
 
 198. P. piperoidea 
 Parish 
 
 680. P. longispicum 
 
 684. P. californicum 
 
 899. P. densum v. 
 
 970, 3005, 5071. P. Libocedri 
 
 1073. P. villosum 
 
 1443. P. paueiflorum 
 
 1444. P. ligatum 
 Parry (see Wright) 
 
 (1877). P. californicum v. 
 877. P. Libocedri 
 
 & Lemmon 
 
 373. P. Libocedri 
 
 & Palmer 
 
 799. P. falcatum 
 799%. P. thyrsoideum 
 
 Parsons 
 
 (1877). P. juniperinum 
 
 Patris 
 
 P. piperoides 
 Paul of Wuertemberg 
 
 (1831). P. velutinum 
 Pavon 
 
 P. angustif olium 
 P. brachystachyum 
 
 P. semiteres 
 
 Pearce 
 
 (1864). P. tucumancnse 
 
 Peck 
 
 444, 530. P. piperoides 
 824. P. crassifolium v. 
 
 Peckolt 
 
 624. P. crassifolium 
 de Pedeguara 
 
 2690. P. amplifolium 
 
 *See note under Lehmann. 
 
204 
 
 THE GENUS PHORADENDRON 
 
 Perriam 
 P. flaveseens 
 
 Perrottet 
 
 (1820). P. racemosum 
 (1820), 229. P. piperoides 
 (1824). P. trinervium 
 228. P. Perrottetii 
 
 Picarda 
 
 5a, 16a. P. racemosum 
 
 72, 132b, 301, 448. P. antillarum 
 
 215. P. dichotomum 
 
 1605. P. piperoides 
 
 1623. P. hexastichum 
 
 1640, 1666. P. haitense 
 
 Pilsbry 
 
 (1904). P. macrotomum 
 
 (1906). P. capitellatum 
 
 (1906). P. Coryae and f. 
 
 (1906). P. juniperinum 
 Pittier (see also Tonduz) 
 
 816, 14117. P. crispum 
 
 1258, 2932, 3312. P. graeilispicum 
 
 1637. P. robustissimum v. 
 
 2604. P. venezuelense 
 
 3345, 3357, 3903. P. piperoides 
 
 3900, 6638. P. eeibanum 
 
 3901-2, 6580. P. crassifolium v. 
 
 Pittmann 
 
 (1902). P. flaveseens 
 
 Plank 
 
 (1895). P. juniperinum 
 
 Platt 
 
 (1894). P. longispicum 
 
 Poeppig 
 
 (1824). P. antillarum 
 
 (1829-30). P. Linda vianum 
 
 2859. P. crassifolium f. 
 Pohl 
 
 (1828), 246, 4319. P. piperoides 
 
 106. P. ensifolium 
 
 245, 4583. P. microphyllum 
 
 273. P. lanceolato-ellipticum 
 
 457. P. crassifolium 
 
 544. P. affine 
 
 Pohl continued 
 568. P. undulatum 
 1928. P. tunaeforme 
 
 Poiteau 
 
 P. anceps 
 
 (1819-21, 1824). P. piperoides 
 
 617. P. dichotomum 
 
 Pollard & Morgan 
 247a. P. flaveseens 
 
 Pond 
 
 183. P. Libocedri 
 
 189, 192. P. villosum 
 
 191. P. densum 
 Powell 
 
 P. flaveseens 
 
 Pratten 
 
 P. ligatum 
 
 Prax 
 
 (1854). P. antillarum 
 
 Prenleloup 
 
 507. P. racemosum 
 Preuss 
 
 1372. P. robustissimum v. 
 
 Price 
 
 P. flaveseens 
 
 Pringle 
 
 (1881). P. calif ornicum v. 
 
 (1881). P. Coryae 
 
 (1883), 845. P. Greggii 
 
 (1884). P. calif ornieum 
 
 (1884), 1358. P. juniperinum 
 
 (1884). P. macrophyllum 
 
 (1885), 256. P. Bolleanum 
 
 80. P. antillarum 
 
 1854, 2668, 8647. P. carneum 
 
 8191. P. nervosum 
 
 4699, 13189. P. calyculatum 
 
 4434. P. tequilense 
 
 6290. P. Forestierae 
 
 6630, 11159, 13188. P. Pringlei 
 
 6272, 9467, 13765. P. Robinsonii 
 
 6759, 7027, 8009, 11160. P. brachy- 
 
 stachyum 
 8058, 9509, 13190. P. velutinum 
 
INDEX COLLECTIONS 
 
 205 
 
 Purdie 
 P. flavens 
 
 P. mucronatum 
 Purpus 
 
 (1912). P. Purpusi 
 
 (1912), 2877. P. nervosum 
 
 (1912), 3693. 3806. P. piperoides 
 
 2. P. juniperinum 
 
 1106. P. Greggii 
 
 1441, 4087, 5073. P. brachystach- 
 
 yum 
 
 1777. P. velutinum 
 2724. P. lanatum 
 5322. P commutation 
 5832. P. Eobinsonii 
 
 6279. P. calyculatum v. 
 
 6280. P. tamaulipense 
 6401. P. Galeottii 
 
 Rafinesque 
 
 (1823). P. flavescens 
 Bamage 
 
 1888. P. piperoides 
 
 Bansdell 
 
 P. flavescena 
 Eattan 
 
 P. villosum 
 (1912). P. longispicum 
 
 Eavenel 
 
 P. flavescens 
 Eaymond 
 
 1869. P. flavescens 
 Eead 
 
 P. flavescens 
 P. trinervium 
 
 Eehn & Viereck 
 
 (1902). P. capitellatum 
 Eeineck see Czermak 
 Benson 
 
 256. P. Eensoni 
 
 284. P. robustissimum v. 
 Eeverchon 
 
 837. P. Engelmanni 
 Bicksecker 
 
 302. P. chrysocarpum 
 
 Eiedel 
 
 (1829). P. pteroneuron 
 
 P. bathyoryctum 
 
 P. chrysocladon 
 
 P. crassifolium and f. 
 
 P. piperoides 
 
 P. platycaulon 
 P. undulatum 
 
 Bobert 
 
 439. P. pteroneuron 
 
 522. P. piperoides 
 Bobinson & Lyon 
 
 (1900). P. Lyoni 
 Eojas 
 
 2732. P. Liga 
 Eolfa 
 
 (1891), 538. P. flavescens 
 BOM 
 
 1525. P. commutatum 
 1712, 3409. P. scaberrimum 
 3442. P. Bolleanum 
 16293. P. brachyphyllum 
 16354, 16617. P. peninsulare 
 16562. P. saccatum 
 16583. P. californicum v. 
 16780. P. californicum 
 16848. P. aureum 
 16862. P. tumidum 
 , Fiteh and Bussell 
 3936. P. cerinocarpum 
 
 & Hay 
 
 5873. P. Forestierae 
 5939. P. Eobinsonii 
 , Painter & Bose 
 
 9160, 9873. P. brachystachyum 
 9707. P. lanatum 
 9742. P. carneum 
 9877. P. Eobinsonii 
 9965. P. brevifolium 
 
 & Rose 
 
 11259. P. Eobinsonii 
 
 11260. P. brachystachyum 
 
 & Bussell 
 
 19751. P. emarginatum 
 
 19799. P. afline 
 
 19908. P. stenopuyllum 
 
206 
 
 THE GENUS PHOBADENDEON 
 
 Kose & Eussell continued 
 
 20027. P. dipterum 
 
 20369. P. fragile 
 , Standley & Bussell 
 
 12211. P. Engelmanni v. 
 
 12574, 13520. P. brachystachyum 
 
 13165. P. californieum v. 
 
 13846. P. Guazumae 
 
 14450. P. commutatum 
 
 Boss 
 
 148. P. velutinum 
 
 459. P. carneum 
 
 718. P. nervosum 
 
 723. P. Galeottii 
 Bothrock 
 
 261, 510, 814. P. juniperinum 
 
 262, 794. P. Coryae 
 338. P. californieum 
 362. P. macrophyllum 
 
 Bothschuh 
 
 464. P. robustissimum v. 
 
 Bugel 
 
 269b. P. anlillarum 
 
 270. P. piperoides 
 Buiz 
 
 P. peruvianum 
 
 P. piperoides 
 
 Busby 
 
 (1896). P. raeemosum 
 (1909). P. Liboeedri 
 (1910). P. Conzattii 
 177. P. carneum 
 
 389. P. Coryae 
 
 390, 7262. P. juniperinum 
 1387, 1543 pp. P. crassifolium 
 1542. P. aeinacifolium 
 
 1546. P. undulatum 
 
 1547. P. bolivianum 
 
 Eussell (see Bose) 
 
 1889. P. californieum 
 Safford 
 
 1438. P. carneum 
 Sagot herbarium 
 
 296. P. piperoides 
 
 1291. P. Perrottetii 
 
 Saltzmann 
 
 302. P. chrysocladon 
 Sargent see Engelmann 
 Sartorius 
 
 P. piperoides 
 Saunders 
 
 (1906). P. longispicum 
 
 Savage & Stull 
 1174. P. flavescens 
 
 Schaffner 
 
 188, 459. P. velutinum 
 
 Sehenck 
 
 2132. P. piperoides 
 3902. P. Martianum 
 4238. P. tunaeforme 
 4282. P. pteroneuron 
 
 Scherfee 
 
 (1914). P. villosum 
 
 Sehiede 
 
 402. P. minutifolium 
 
 403. P. faleatum 
 Schmitz 
 
 150. P. velutinum 
 
 Sehnabel 
 
 (1911). P. macrotomum 
 
 Schoenfeldt 
 
 3045. P. densum 
 3400. P. villosum 
 3687. P. coloradense 
 
 Schomburgk 
 
 P. piperoides 
 554. P. racemosum 
 
 Sehott 
 
 (1855). P. capitellatum 
 
 P. coloradense 
 
 P. piperoides 
 von Sehrenk 
 
 (1912). P. flavescens v. 
 & McCrory 
 
 (1912). P. flavescens 
 Schumann 
 
 711. P. Schumann! 
 Schwancke 
 
 P. antillarum 
 
INDEX COLLECTIONS 
 
 207 
 
 Schweinitz 
 
 (1829). P. flavescens 
 Schweinitz herbarium 
 
 P. piperoides 
 Seemann 
 
 P. Bolleanum 
 
 2140. P. Schumanni 
 
 2141. P. Reichenbachianum 
 Seler 
 
 119, 1763. P. tlacolulense 
 
 422, 4484. P. tamaulipense 
 
 4731. P. juniperinum 
 Selkirk 
 
 1771-2. P. Coryae 
 
 9816. P. californicum 
 SeUo 
 
 122. P. SeUoi 
 
 155. P. craspedophyllum 
 
 234. P. craspedophylloides 
 
 498. P. piperoidea 
 
 511, 597. P. aeinacifoliuin 
 
 5266. P. crassifolium 
 
 5847. P. holoxanthum 
 von Seneloh 
 
 259. P. piperoides 
 Shafer (see Britton) 
 
 159, 296, 363', 371, 563, 815, 1109, 
 1622, 11823, 11828, 12109, 12403. 
 P. antillarum 
 
 296, 371. P. rubrum 
 
 314, 320, 600, 607, 2003. P. triner- 
 vium 
 
 331, 3270, 8116, 8517, 8601, 8607, 
 8737. P. piperoides 
 
 8590. P. hexastichum 
 
 8817. P. dichotomum 
 
 12178. P. Gundlachii 
 & Fiteh 
 
 1472. P. chrysoearpum 
 Shear 
 
 4200, 4206, 4259. P. macrophyllum 
 
 Shimek 
 
 (1898). P. flavescons 
 Short 
 
 (1852). P. flavescens 
 
 Sieber 
 
 P. piperoides 
 
 227 pp. P. hexastichum 
 227 pp. P. martiuicense 
 Simpson 
 
 49. P. macrotomum 
 
 P. Cockerellii 
 Sintenis 
 
 339, 339b pp., 339c, 1270, 1388, 
 
 4154, 4391, 4494, 4614, 4840. P. 
 
 piperoides 
 339b pp., 887, 4894, 5297, 6060. P. 
 
 chrysoearpum 
 885, 887b, 3035, 2292b, 3912, 5562, 
 
 6624, 6701. P. antillarum 
 887c, 3034, 3246, 3248. P. triner- 
 
 vium 
 2345b, 2348, 3058, 4288, 6114, 6419. 
 
 P. dichotomum 
 2836, 5383. P. hexastichum 
 5409, 6758 pp. P. tetrapterum 
 6758 pp. P. racemosum 
 Sitgreaves 
 
 P. juniperinum f. 
 Skehan 
 
 (899). P. juniperinum 
 Small 
 
 (1893). P. flavesceua 
 & Carter 
 
 8479. P. Northropiae 
 
 Smith 
 
 (1872). P. macrotomum 
 
 34, 1300. P. trinervium 
 
 183, 2310. P. flavescens 
 
 245 pp., 1305. P. chrysocarpum 
 
 245 pp., 248, 263, 1278, 2039. P. 
 
 piperoides 
 
 297. P. hexastichum 
 360. P. tamaulipense 
 374. P. flavens v. 
 
 1280. P. venezuelense 
 
 1281. P. exiguum 
 
 1282. 1285. P. Degenianum 
 
 1283. P. Herbert-Smithii 
 
 1284. P. sanetae-martae 
 2097. P. robustissimum v. 
 
208 
 
 THE GENUS PHORADENDROX 
 
 Smith continued 
 
 2610. P. annulatum 
 
 5466. P. villosissimuin 
 
 5483. P. densum 
 Snodgrass & Heller 
 
 40, 228, 825. P. Henslovii 
 
 325. P. uneinatum 
 
 Sodiro 
 
 (1871, 1873), 19e, 28-30, 32, 148/29, 
 
 148/29b. P. Verleyseni 
 (1872). P. quadrangulare 
 (1872, 1874), 148/28. P. piperoides 
 (1874), 148/21. P. amplectens 
 a, 148/16. P. obliquum 
 c, i, 148/20, 148/25. P. parietari- 
 
 oides 
 e, 148/18. P. membranaceum 
 
 Solereder 
 
 (1893). P. calif ornicum v. 
 (1893). P. Liboeedri 
 
 Soulard 
 
 P. Engelmanni 
 (1872). P. flavescens 
 
 Spaulding 
 
 299-301. P. longispieum 
 
 302. P. juniperinum 
 Sprengel herbarium 
 
 P. antillarum 
 
 P. hexastichum 
 
 Spruce 
 
 (1850-51), 1, 2, 226, 228. P. platy- 
 caulon 
 
 4, 739, 2909. P. piauhyanum 
 
 140. P. caripense 
 
 732, 904. P. crassifolium f. 
 
 1563. P. crassifolium 
 
 2112. P. productipes 
 
 3480. P. pellucidulum 
 
 6202. P. trisuleatum 
 Stahl 
 
 45, 1043. P. antillarum 
 
 1043b. P. chrysoearpum 
 Standley (see Rose; Wooton) 
 
 (1906). P. Coryae 
 
 525. P. Cockerellii 
 
 Stearns 
 
 (1911). P. Cockerellii 
 (1911). P. Engelmanni 
 
 Steetz 
 
 P. flaveseens 
 
 Steiger 
 
 (1894). P. longispieum 
 
 Steindachner 
 
 67. P. Henslovii 
 Stevens (see Britton) 
 
 P. flavescens 
 
 4817 pp. P. racemosum 
 
 4818, 4819, 4828, 4887, 5210, 5211. 
 
 P. tetrapterum 
 5212, 5825b, 5826-9, 5907-8, 5935. 
 
 P. antillarum 
 5825, 5825a, 5899, 5931. P. chryso- 
 
 carpum 
 5825c. P. Helleri 
 
 - & Hess 
 
 4563, 4988. P. antillarum 
 
 4548, 4561. P. trinervium 
 
 4888. P. piperoides 
 Stocking 
 
 P. flavescens 
 
 Stokes 
 
 (1895). P. Libocedri 
 (1895). P. longispieum 
 (1895). P. villosum 
 
 Stuckert 
 
 11778. P. pruinosum 
 
 11778, 13337, 14526, 20248. P. Me- 
 
 liae 
 
 13363. P. Hieronymi 
 13363, 18606, 20256. P. Balansae 
 14569, 16437. P. Liga 
 20252. P. argentinum 
 
 Stuebel 
 
 165. P. avenium 
 
 Stull see Savage 
 Sumicrast 
 341. P. commutatam 
 
 Suringar 
 
 P. trinervium 
 
INDEX COLLECTIONS 
 
 209 
 
 Tainturier 
 
 P. flavescens 
 Tate 
 
 129(198). P. supravenulosum 
 Tatnall 
 
 P. flavescens 
 Taylor (see Nash) 
 
 28, 415. P. racemosum 
 223, 338, 481, 497. P. antillarum 
 328. P. hexastichum 
 Thomas 
 
 P. coloradense 
 Thornber (see Griffiths) 
 
 14t. P. californicum 
 
 100. P. Coryae 
 Thurber 
 
 (1851). P. juniperinum 
 
 865. P. lanceolatum 
 Tillotson 
 
 8329. P. densum 
 Tonduz (see Pittier) 
 
 1393, 7884, 10110, 12215. P. gracil- 
 ispicum 
 
 1840, 7840 pp., 13142. P. Heydea- 
 num 
 
 3900, 6638. P. ceibanum 
 
 6863. P. crassifolium v. 
 
 11457. P. quinquenervium 
 
 11458-9. P. piperoides 
 
 7840 pp., 12179. P. Tonduzii 
 
 12749. P. supravenulosum 
 
 13705. P. robustisgimum 
 Torrey 
 
 P. flavescens 
 Tourney 
 
 (1894), 14, 291. P. californicum 
 
 (1894), 2, 288, 290. P. Coryae 
 
 (1894, 1895), 10, 292. P. juniperi- 
 num 
 
 (1894), 33, 289. P. macrophyllum 
 
 (1895). P. capitellatum 
 Townsend 
 
 (1899). P. Townsendi 
 and Barber 
 
 164. P. juniperinum 
 
 Tracy (see Baker; Earle) 
 & Earle 
 
 188. P. Engelmanni 
 Trelease 
 
 P. flavescens 
 (1892). P. densum 
 (1892). P. villosum v. 
 (1897). P. Engelmanni v. 
 (1901). P. californicum v. 
 (1915). P. flavescens v. 
 
 362. P. Coryae f. 
 
 363. P. capitellatum 
 Triana 
 
 2777. P. turbinispicum 
 
 2778. P. Trianae 
 Trudeau 
 
 P. flavescens 
 von Tuerckheim 
 
 435, ii 2045. P. Rondeletiae 
 2616. P. antillarum 
 3284. P. hexastichum 
 7661. P. stipiticarpum 
 7967, 8574. P. supravenulosum 
 8745. P. piperoides 
 ii 2168. P. faleifolium 
 Tweedie 
 
 P. falcifrons 
 Tweedy 
 
 596-8. P. juniperinum 
 Tyler 
 
 (1904). P. Engelmanni v. 
 Uhde 
 
 1026-7. P. velutinum 
 
 bit) 
 
 850. P. piperoidec 
 1791, 4598. P. crasifolium 
 4800.. P. piperoides f. 
 4938. P. linearifolium 
 5251. P. laxiflorum 
 6664. P. huallagense 
 6681. P. Urbanianum 
 6948. P. tunaeforme 
 7243. P. Caesalpiniae 
 Underwood & Earle 
 1311. P. piperoides 
 
210 
 
 THE GENUS PHOEADENDEON 
 
 Underwood & Griggs 
 211. P. antillaruia 
 283. P. antillarum v. 
 554. P. trinervium 
 671. P. chrysocarpum 
 
 United States see Boundary Sur- 
 vey; Wilkes Exped. 
 
 Van Goes 
 
 P. trinervium 
 
 Van Hermann 
 
 1448. P. antillarum 
 
 4887. P. piperoides 
 Varamel 
 
 P. mucronatum 
 
 Vasey 
 
 (1875, 1880). P. longispicum 
 (1875). P. flavescens 
 (1880). P. villosum 
 (1881). P. ealifornicum v. 
 (1881). P. juniperinum 
 
 Vasquez see Conzatti 
 
 Vauthier 
 
 P. tunaeforme 
 Ventenat herbarium 
 
 P. trinervium 
 Verleysen 
 
 148*, 148**. P. Verleyseni 
 Versteeg 
 
 239. P. surinamense 
 Viereck see Kehn 
 Vreeland 
 
 806. P. juniperinum 
 
 807. P. Coryae 
 
 808. P. Coekerellii 
 Wagner 
 
 (1858). P. corynarthron 
 Walpole 
 
 152, 380. P. villosum 
 
 230, 418. P. densum 
 Ward 
 
 (1876). P. flavescens 
 
 Ward continued 
 
 (1891). P. Engelmanni v. 
 
 (1912). P. maerotomum 
 
 116. P. villosum 
 
 360. P. juniperinum 
 Warming! 
 
 (1891-2). P. Lyoni 
 
 P. affine 
 
 14, 381. P. ensifolium 
 
 15, 369. P. bathyoryctum 
 17, 384. P. tunaeforme 
 373. P. crassifolium 
 
 383. P. Warmingii 
 Watt 
 
 6219. P. flavens 
 
 6221. P. Wattii 
 Wawra 
 
 420, 865. P. nervosum 
 
 567. P. tamaulipense 
 
 747. P. Wawrae 
 Weberbauer 
 
 1288. P. Lindaviamnn 
 
 1860. P. crassifolium 
 
 1903-4. P. Englerianum 
 
 4251. P. Ernstianum 
 Weddell 
 
 (1858). P. amplexicaule 
 
 (1858), 1594. P. Martianum 
 
 378. P. piperoides 
 Werner 
 
 (1892). P. flavescens 
 Wheeler (see Grant) 
 
 (1872). P. ligatum 
 
 (1872). P. Coryae 
 Whited 
 
 3179. P. ligatum 
 Wied Neuwied 
 
 P. crassifolium 
 (1829). P. piperoides 
 (1836). P. flavescens 
 
 Wile ox 
 
 (1892). P. juniperinum 
 (1892). P. maerophyUum 
 (1893), 391, 458. P. Coryae 
 
 tSee notes on Liebmaim and Oersted. 
 
INDEX OCCUERENCE 
 
 211 
 
 Wilkes Expedition 
 P. chrysocladcn 
 P. crassifolium 
 1316. P. longispicum 
 1567. P. densum 
 1667, 1772. P. villosum 
 
 Wilkinson 
 
 (1885). P. Wilkinson! 
 
 Williams 
 
 178. P. Brittonianum 
 255. P. piperoides 
 428, 594. P. erassifolium 
 581. P. boliviauum 
 
 Wilson (see Britton) 
 1748. P. antillarum 
 7250, 7254, 7315, 7814, 7851, 7854. 
 
 P. trinervium 
 7449, 7457, 7532, 7579. P. rubrum 
 
 Wislizenus 
 41. P. Cockerellii 
 
 Wooton 
 
 (1899, 1903), 127. P. Coryae 
 (1900, 1909), 386, 2866. P. juni- 
 
 perinum 
 (1902, 1906). P. Cockerellii 
 
 - & Standley 
 (1906). P. Coryae 
 
 Wright 
 
 (1853-6). P. commutatum 
 
 (1853-6). P. longispicum 
 
 15. P. Cockerellii 
 
 216 pp., 217, 1251a. P. piperoidea 
 
 216 pp., 437, 1251. P. dichotomum 
 
 438, 1252 pp. P. racemosum 
 
 452, 1302. P. antillarum 
 
 512, 1200b, 1300b. P. rubrum 
 
 630, 1787. P. capitellatum 
 
 632. P. Havardianum 
 
 1252 pp. P. hexastichum 
 
 1786. P. Coryae 
 
 1788. P. juniperinum 
 
 2650. P. Gundlachii 
 
 , Parry & Brummel 
 
 458. P. anceps 
 
 459. P. cerinocarpum 
 
 460. P. hexastichum 
 
 464. P. dichotomum 
 
 465. P. piperoides 
 467. P. antillarum 
 
 Wuertemberg see Paul 
 
 Wullschlaegel 
 P. ceibanum 
 256-7 P. trinervium 
 991. P. piperoides 
 1481. P. racemosum 
 
 B. OCCURRENCE 
 
 NORTH AMERICA 
 United States 
 Alabama 
 
 P. flavescens 
 Arizona 
 
 P. californicum 
 
 distans 
 
 nanum 
 P. Coryae 
 P. densum 
 
 P. juniperinum 
 
 nanum 
 
 P. macrophyllum 
 circulare 
 
 Jonesii 
 
 P. pauciflorum 
 
 Arkansas 
 P. flavescens 
 
 orbiculare 
 
 California 
 P. californicum 
 
 distans 
 
 P. eoloradense 
 P. densum 
 
 Parishii 
 P. Libocedri 
 P. ligatum 
 
 P. longispieum 
 
 cyclophyllum 
 P. pauciflorum 
 P. villosum 
 
 rotundifolium 
 
212 
 
 THE GENUS PHORADENDRON 
 
 Colorado 
 P. juniperinum 
 
 Delaware 
 P. flavescens 
 
 District of Columbia 
 
 P. flavescens 
 Florida 
 
 P. Eatoni 
 
 P. flavescens 
 
 P. macrotomum 
 Illinois 
 
 P. flavescens 
 Indiana 
 
 P. flavescens 
 Kentucky 
 
 P. flavescens 
 Louisiana 
 
 P. flaveseens 
 
 orbiculare 
 Maryland 
 
 P. flavescens 
 Mississippi 
 
 P. flavescens 
 Missouri 
 
 P. flavescens 
 Nevada 
 
 P. californicum 
 
 distans 
 P. Libocedri 
 P. ligatum 
 
 New Jersey 
 
 P. flavescens 
 New Mexico 
 
 P. capitellatum 
 
 P. Cockerellii 
 
 P. Coryae 
 
 P. juniperinum 
 
 North Carolina 
 P. flavescens 
 
 Ohio 
 
 P. flavescens 
 Oklahoma 
 
 P. flavescena 
 
 Oregon 
 P. densum 
 P. Liboeedri 
 P. ligatum 
 P. villosum 
 
 Pennsylvania 
 P. flavescens 
 
 South Carolina 
 P. flavescens 
 
 Texas 
 
 P. Bolleanum 
 P. capitellatum 
 P. Cockerellii 
 P. Engelmanni 
 
 Claviger 
 P. flavescens 
 
 orbiculare 
 
 P. Havardianum 
 Utah 
 
 P. californicum 
 
 P. juniperinum 
 Virginia 
 
 P. flavescens 
 West Virginia 
 
 P. flavescens 
 Mexico 
 
 Lower California 
 
 P. aureum 
 
 P. brachyphyllum 
 
 P. californicum 
 
 distans 
 P. Diguetii 
 P. Eduardi 
 
 P. peninsulare 
 P. saccatum 
 P. tumidum 
 P. villosum 
 
 Yucatan 
 P. Gaumeri 
 P. vernicosum 
 P. yucatanum 
 
 Mainland 
 
 P. amplifolium 
 P. Bolleanum 
 
INDEX OCCURRENCE 
 
 213 
 
 Mexico, Mainland continued 
 P. brachystachyum 
 P. brevifolium 
 P. californicum 
 distans 
 P. calyculatum 
 filipea 
 
 Gonzalezii 
 
 occidentale 
 P. capitellatum 
 P. carneum 
 
 P. Cockerellii 
 P. colipense 
 P. commutatum 
 P. Conzattii 
 
 tecomatlanum 
 P. densum 
 
 P. Engelmanni 
 P. falcatum 
 P. Forestierae 
 P. Galeottii 
 P. globuliferum 
 P. Greggii 
 P. Guazumae 
 P. juniperinum 
 P. lanatum 
 P. lanceolatum 
 P. ligatum 
 P. longifolium 
 P. macrophyllum 
 P. mazatlanum 
 P. minutifolium 
 P. nervosum 
 P. Oliverianum 
 P. pachyarthron 
 P. Palmeri 
 P. piperoides 
 hexastichum 
 P. Pringlei 
 P. puberulum 
 
 chihuahuense 
 P. Purpusi 
 
 P. Reichenbachianum 
 P. Robinsonii 
 P. saltillense 
 P. scaberrimum 
 P. Schumanni 
 
 Mexico, Mainland continued 
 P. tamaulipense 
 P. tequilense 
 P. thyrsoideum 
 P. tlacolulense 
 P. tomentosum 
 P. velutinum 
 P. villosum 
 P. Wawrae 
 P. Wilkinsoni 
 
 Central America 
 
 Belize (British Honduras) 
 
 P. crassifolium Pittieri 
 
 P. piperoides 
 Costa Rica 
 
 P. annulatum 
 
 P. ceibanum 
 
 P. crassif olium Pittieri 
 
 P. Cooperi 
 
 P. crispum 
 
 P. gracilispicum 
 
 P. Heydeanum 
 
 P. piperoides 
 
 P. quinquenervium 
 
 P. Rensoni 
 
 P. robustissimum 
 
 simulans 
 
 P. supra trenulosum 
 
 P. Tonduzii 
 Guatemala 
 
 P. annulatum 
 
 P. cheirocarpum 
 
 P. falcifolium 
 
 P. Heydeanum 
 
 P. multiflorum 
 
 P. piperoides 
 
 P. robustissimum simulana 
 
 P. Rondeletiae 
 
 P. supravenulosum 
 
 P. uspantanum 
 
 P. velutinum 
 
 P. vulcanicum 
 
 P. zacapanum 
 Honduras (see Belize) 
 
 P. commutatum 
 
 P. decussatum 
 
214 
 
 THE GENUS PHORADENDKON 
 
 Nicaragua 
 P. ceibanum 
 P. commutatum 
 P. piperoides 
 
 P. robustissimum simulans 
 
 P. supravenulosum 
 Panama 
 
 P. corynarthron 
 
 P. graeilispieum 
 
 P. venezuelense 
 
 P. piperoides 
 Salvador 
 
 P. Bensoni 
 
 P. robustissimum simulans 
 SOUTH AMERICA 
 Argentina 
 
 P. argentinum 
 
 P. Hieronymi 
 
 P. Liga 
 
 P. Meliae 
 
 P. piperoides 
 
 P. pruinosum 
 
 P. tucumanense 
 Bolivia 
 
 P. angustifolium 
 
 P. bathyoryctum 
 
 P. bolivianum 
 
 P. Brittonianum 
 
 P. crassifolium 
 
 P. Kuntzei 
 
 P. Liga 
 
 P. Mandonii 
 
 P. Meliae 
 
 P. semiteres 
 
 P. undulatum 
 Brazil 
 
 P. aeinaeifolium 
 
 P. affine 
 
 P. amplexicaule 
 
 P. bathyoryctum 
 
 P. Caesalpiniae 
 
 P. campinense 
 
 P. caripense 
 
 P. cearense 
 
 minor 
 
 P. chrysocladon 
 
 Brazil continued 
 P. congestum 
 P. coriaceum 
 
 quintense 
 
 P. craspedophylloides 
 P. craspedophyllum 
 P. crassifolium 
 
 multiflorum 
 
 parvif olium 
 P. Crulsii 
 
 P. dipterum 
 P. emarginatum 
 P. ensifolium 
 P. fragile 
 P. Gardnerianum 
 P. Glaziovii 
 P. habrostachyum 
 P. holaxanthum 
 
 corallispicum 
 
 P. lanceolato-elliptieum 
 P. laxiflorum 
 P. linearifolium 
 P. macrarthrum 
 P. Martianum 
 P. microphyllum 
 P. minor 
 
 P. multifoveolatum 
 P. nitidum 
 P. pellueidulum 
 P. piauhyanum 
 P. piperoides 
 compositum 
 P. platyeaulon 
 P. productipes 
 P. pteroneuron 
 P. Selloi 
 P. stenophyllum 
 P. strongyloelados 
 P. tunaeforme 
 P. ulophyllum 
 P. undulatum 
 P. Warmingii 
 P. Wiesnerianura 
 Cayenne (French Guiana) 
 P. Perrottetii 
 P. piperoides 
 
INDEX OCCURRENCE 
 
 215 
 
 Cayenne continued 
 
 P. platycaulon 
 
 P. racemosum 
 Colombia 
 
 P. avenium 
 
 P. Briquetianum 
 
 P. Degenianum 
 
 P. exiguum 
 
 P. gracilispicum 
 
 P. Herbert-Smithii 
 
 P. Holtonia 
 
 P. Lindeni 
 
 P. piperoidea 
 
 P. quadrangulare 
 
 P. sanctae-martae 
 
 P. Trianae 
 
 P. turbinispicum 
 
 P. venezuelense 
 Demerara (British Guiana) 
 
 P. apertum 
 
 P. Appuni 
 
 P. carinatum 
 
 P. crassifolium 
 
 P. demerarae 
 
 P. essequibenae 
 
 P. Jenmani 
 
 P. obtusissimum 
 
 P. Perrottetii 
 
 P. piperoidea 
 
 P. raeemoaum 
 Ecuador 
 
 P. amplectena 
 
 P. Eggersii 
 
 P. membranaceum 
 
 P. obliquum 
 
 P. parietarioidea 
 
 P. piperoides 
 
 P. quadrangulare 
 
 P. trisulcatum 
 
 P. Verleyseni 
 
 chimboenae 
 
 Fraaeri 
 
 P. viscifolium 
 
 Guiana 
 
 British see Demerara 
 Dutch see Surinam 
 French see Cayenne 
 
 Paraguay 
 
 P. aeinacifolium 
 P. Balansae 
 
 Hasaleri 
 
 Morongi 
 
 P. Casimiranum 
 
 P. hypericifolium 
 
 P. Liga 
 
 P. Meliae 
 
 P. obovatifolium 
 
 P. piperoides 
 
 P. reductum 
 Peru 
 
 P. anguatifolium 
 
 P. Englerianum 
 
 P. Ernstianum 
 
 P. huallagense 
 
 P. Lindavianum 
 
 P. Mathewai 
 
 P. obliquum 
 
 P. peruvianum 
 
 P. aemiteres 
 
 P. Urbanianum 
 Surinam (Dutch Guiana)* 
 
 P. dimidiatum 
 
 P. obtusissimum 
 
 P. piperoidea 
 
 P. raeemoaum 
 
 P. surinamense 
 Uruguay 
 
 P. falcifrons 
 Venezuela 
 
 P. bilineatum 
 
 P. caracasanum 
 
 P. cuneifolium 
 
 P. cymosum 
 
 P. Fendlerianum 
 
 P. graciliapicum 
 
 P. granaticolum 
 
 *A specimen apparently of Viscum album (Splitgcrber, 836, Apr. 13, 1838) 
 occurs as sheet no. 600670 of the Leiden herbarium ' ' Ad ramos arborum varium in 
 sylvis Surinami prope flum. Saramaccam. Planta tota flavescenti, fructibus 
 luteis. ' ' 
 
216 
 
 THE GENUS PHOBADENDEON 
 
 Venezuela continued 
 P. Johnston! 
 P. Knoopii 
 P. longipetiolatum 
 P. Lyoni 
 P. Ottonia 
 P. ovalifolium 
 P. pachyphyllum 
 P. paradoxum 
 P. piperoides 
 P. polygynum 
 P. racemosuiii 
 P. rigidum 
 P. tovarense 
 P. tubulosum 
 P. venezuelense 
 WEST INDIES 
 Aeklin 
 
 P. trinervium 
 Andros 
 
 P. Northropiae 
 P. raeemosum 
 Antigua 
 
 P. antillarum 
 P. trinervium 
 Cat 
 
 P. rubrum 
 Crooked 
 
 P. rubrum 
 Cuba 
 
 P. antillarum 
 orientale 
 P. dichotomum 
 P. Gundlachii 
 P. hexastichum 
 P. piperoidea 
 P. raeemosum 
 P. rubrum 
 Dominica 
 
 P. chrysoearpum 
 P. flavens australe 
 P. Herminieri 
 P. piperoides 
 P. trinervium 
 Fortune 
 P. rubrum 
 
 Great Eagged 
 
 P. trinervium 
 Grenada 
 
 P. hexastichum 
 
 angustifolium 
 
 P. piperoides 
 Guadeloupe 
 
 P. chrysoearpum 
 
 P. Dussii 
 
 P. Herminieri 
 
 P. hexastichum 
 
 P. martinicense 
 
 P. mueronatum 
 
 P. piperoides 
 
 P. trinervium 
 Haiti (see Sto. Domingo) 
 
 P. antillarum 
 
 P. dichotomum 
 
 P. haitense 
 
 P. hexastichum 
 
 P. mueronatum 
 
 P. piperoides 
 
 P. raeemosum 
 Inagua 
 
 P. rubrum 
 Jamaica 
 
 P. Campbellii 
 
 P. crenulatum 
 
 P. domingense 
 
 P. Fici 
 
 P. flavens 
 
 P. gracile 
 
 Ballii 
 
 P. Grisebachianum 
 P. piperoides 
 P. tetrapterum 
 P. Wattii 
 
 productum 
 Long 
 
 P. rubrum 
 Martinique 
 
 P. chrysocarpum 
 P. hexastichum 
 P. martinicense 
 P. mueronatum 
 P. piparoides 
 
INDEX SPECIES EXCLUDED 
 
 217 
 
 Martinique continued 
 
 P. tetrapterum 
 
 P. trinervium 
 Montserrat 
 
 P. trinervium 
 Mustique 
 
 P. trinervium 
 Puerto Eieo 
 
 P. ancepsf 
 
 P. antillarum 
 
 P. chrysocarpum 
 
 P. Helleri 
 
 P. hexastichum 
 
 P. racemosum 
 
 P. tetrapterum 
 
 P. trinervium 
 Saba 
 
 P. trinervium 
 S. Barthelemy 
 
 P. trinervium 
 S. Croix 
 
 P. chrysocarpum 
 S. Domingo (see Haiti) 
 
 P. aneeps 
 
 P. antillarum 
 
 P. cerinocarpum 
 
 P. diehotomum 
 
 ovatifolium 
 
 P. Helleri sanguineum 
 
 P. hexastichum 
 
 P. mucronatum 
 
 P. piperoides 
 
 P. racemosum 
 
 C. SPECIES 
 
 Phoradendron aequatoris Urban 
 Dendrophthora aequatoris n. nom. 
 
 P. arcuatum Wright 
 Dendrophthora arcuata 
 
 P. auriculatum 
 
 P. buxifolinm Grisebach 
 Dendrophthora buxifolia 
 
 P. buxifolium rotundatum Grisebach 
 D. buxifolia rotundata 
 
 P. chrysostachyum Eichler 
 Dendrophthora chrysostachya 
 
 S. Eustatius 
 P. trinervium 
 
 S. Thomas 
 
 P. ehrysocarpum 
 P. trinervium 
 
 S. Vincent 
 
 P. chrysocarpum 
 P. flavens australe 
 P. hexastichum 
 P. piperoides 
 P. trinervium 
 
 Tobago 
 
 P. piperoidea 
 
 Trinidad 
 
 P. flavens aust.ale 
 P. Hartii 
 P. martinicense 
 P. piperoids 
 P. trinervium 
 P. venezuelense 
 
 Watling 
 P. rubrum 
 P. trinervium 
 
 PACIFIC ISLANDS 
 Galapagos Isl. 
 
 P. galapageium 
 
 P. Henslovii 
 
 P. uncinatum 
 Guadalupe Isl. 
 
 P. guadalupense 
 Eevillagigedo Isl 
 
 P. Townsendi 
 
 P. clavatum Eichler 
 
 Dendrophthora clavata 
 P. clavatum Kirk 
 
 "Viscum clavatum" 
 P. constrictum Grisebach 
 
 Dendrophthora constricta 
 P. cordifolium Eichler 
 
 Oryctanthes cordifolia 
 P. crassuloides Eichler 
 
 Dendrophthora crassuloides 
 P. ellipticum Eichler 
 
 Dendrophthora elliptica 
 
218 
 
 THE GENUS PHOEADENDEON 
 
 Phoradendron continued 
 P. globuliflorum Eichler 
 
 Dendrophthora chrysostachya 
 
 P. inaequidentatum Eusby 
 Dendrophthora inaequidentata n. 
 nom. 
 
 P. leptostachyum Index Kewensis 
 Dendrophthora flagelliformis 
 
 P. leucocarpum Patsehofsky 
 
 Dendrophthora leucocarpa n. nom. 
 
 P. ligustrinum Eichler 
 
 Oryctanthes ligustrina n. nom. 
 
 P. linifolium Eichler 
 
 P. macrostachyum Grisebach 
 Dendrophthora flagelliformis 
 D. macrostachya 
 
 P. macrostachyum f. parvifolia 
 
 Grisebach 
 Dendrophthora serpyllifolia 
 
 P. mesembryanthemifolium Grisebach 
 Dendrophthora mesembryanthemi- 
 folia 
 
 P. myrtilloides Grisebach 
 Dendrophthora elliptica 
 D. myrtilloides 
 
 Allobium (19) 
 Baratostachys (19) 
 Castrea falcata (6) 
 
 Dendrophthora aequatoris 217 
 arcuata 217 
 biserrula 218 
 buxifolia 217 
 rotundata 217 
 chrysostachya 217, 218 
 clavata 217 
 constricta 217, 218 
 crassuloides 217 
 eupressoides 218 
 elliptica 217, 218 
 
 Phoradendron continued 
 P. paucifolium Eusby 
 P. Pearcei Eusby 
 P. roraimae Oliver 
 
 Dendrophthora roraimae n. nom. 
 P. Busbyi Britton 
 
 Dendrophthora Eusbyi n. nom. 
 P. serpyllifolium Grisebach 
 
 Dendrophthora serpyllifolia 
 P. serpyllifolium aphyllum Gray 
 
 Dendrophthora eupressoides 
 P. sessilifolium Grisebach 
 
 Dendrophthora sessilifolia 
 P. squamigerum Eichler 
 
 Dendrophthora squamigera 
 P. squamigerum Oliver 
 
 Dendrophthora biserrula 
 P. subtrinerve Eusby 
 
 Deudrophthora subtrinervis n. nom. 
 P. tafallaeoides Eusby 
 P. testifolium Wright 
 
 Dendrophthora constricta 
 P. tetrastachyum Grisebach 
 
 Dendrophthora grandifolia 
 P. torulosum Eichler 
 
 D. NAMES* 
 (Synonyms in parenthesis) 
 
 Dendrophthora continued 
 flagelliformis 218 
 grandifolia 218 
 inaequidentata 218 
 leucocarpa 218 
 macrostachya 218 
 mesembryanthemifolia 218 
 myrtilloides 218 
 roraimae 218 
 Eusbyi 218 
 serpyllifolia 218 
 sessilifolia 218 
 squamigera 218 
 subtrinerve 218 
 
 "The number after a name, followed by a colon, is that of its group of species. 
 
INDEX NAMES 
 
 219 
 
 Dendropemon domingensis (102) 
 Loranthus angustifolius (65) 
 
 domingensis (102) 
 
 piperoides (146, 184) 
 
 quadrangularis (108, 178) 
 
 sessilis (104) 
 
 torulosus (146, 184) 
 
 viscifolius (109, 178) 
 
 Oryctanthes cordifolia 217 
 ligustrina 218 
 
 Phoradendron acinacifolium 25: 12, 
 
 91, 92, 175 
 
 aequatoris=Dendrophthora 
 affine 31: 9, 108, 113, 179 
 amplectens 16: 70, 75, 172 
 amplexicaule 16: 9, 70, 74, 172 
 amplifolium 9: 58, 59, 170 
 anceps 28: 97, 98, 176 
 angustifolium 13: 65, 170 
 annulatum 9: 58, 169 
 antillarum 31: 14, (107), 108, 111, 
 
 178 
 
 - longum 112, 178 
 
 - orientate 112, 178 
 apertum 30: 102, 104, 177 
 Appuni 30: 102, 104, 177 
 arcuatum Dendrophthora 
 argentinum 33: 56, 120, 121, 180 
 auriculatum=: ? 
 
 aureum 4: 45, 49, 168 
 avenium 42: 131, 133, 182 
 Balansae 42: 131, 132, 182 
 
 Hassleri 132, 182 
 
 Morongi 132, 182 
 bathyoryctum 23: 87, 88, 174 
 Berterianum (158, 186) 
 bilineatum 20: 83, 84, 174 
 Biolleyi (146) 
 
 bolivianum 46: 137, 138, 183 
 Bolleanum 2: 14, 25, 26, 166 
 brachyphyllum 4: 45, 49, 168 
 brachystaehyum 4: 45, 47, 168 
 brevifolium 17: 76, 172 
 Briquetianum 21: 85, 86, 174 
 Brittonianum 46: 10, 137, 139, 183 
 buxifoliumzr:Dendrophthora 
 
 Phoradendron continued 
 
 Caesalpiniae 52: 148, 150, 185 
 californicum 1: 7, 11, 12, 14, 20, 
 165 
 
 argenteum 21 
 
 distana 21, 165 
 
 nanum 21, 165 
 calyculatum 8: 7, 54, 169 
 
 filipes 54, 169 
 
 Gonzalezi 54, 169 
 occidentale 54 
 Campbellii 27: 95, 96, 175 
 campinense 55 : 158, 160, 186 
 capitellatum 2: 25, 165 
 caracasanum 32: 116, 120, 180 
 carinatum 46: 137, 139, 183 
 caripense 19: 79, 80, 173 
 carneum 9: 8, 58, 60, 170 
 Casimiranum 16: 70, 71, 171 
 cayennense (137) 
 
 cearense 32: 116, 119, 180 
 
 minor 120, 180 
 ceibanum 31: 108, 110, 178 
 cerinocarpum 46: 137, 139, 183 
 cheirocarpum 26: 93, 94, 175 
 chrysocarpum 28: 12, 97, 98, 176 
 chrysocladon 53: 9, 151, 152, 185 
 chrysostachyumr=Dendrophthora 
 clavatum^rDendrophthora 
 Cockerellii 3 : 30, 38, 164, 167 
 colipense 3: 30, 37, 167 
 coloradense 3: 30, 39, 167 
 commutatum 30: 12, 103, 106, 177 
 congestum 19: 79, 80, 173 
 constrietum=:Dendrophtliora 
 Conzattii 11: 61, 63, 170 
 
 nochixtlanense 64, 170 
 
 tecomatlanum 64, 170 
 Cooperi 14: 56, 66, 67, 171 
 cordifolium=Oryctanthes 
 coriaceum 19: 79, 81, 173 
 
 quintense 82, 173 
 
 Coryae 3 : 30, 43, 164, 165, 168 
 corynarthron 14: 66, 171 
 craspedophylloides 25 : 91, 92, 175 
 craspedophyllum 24: 13, 89, 91, 143, 
 175 
 
220 
 
 THE GENUS PHOKADENDKON 
 
 Phoradendrou continued 
 crassifolium 50: 13, 144, 183 
 
 - multiflorum 145, 184 
 
 parvifolium 145 
 
 - Pittieri 145, 184 
 erassuloides=:Dendrophthora 
 crenulatum 28: 97, 101, 176 
 crispum 17: 76, 77, 172 
 Crulsii 16: 70, 74, 172 
 cuneifolium 32: 10, 116, 119, 180 
 cymosum 55: 8, 10, 158, 159, 186 
 decussatum 26: 93, 94, 175 
 Degenianum 32: 116, 119, 180 
 demerarae 16: 70, 73, 172 
 densum 2: 7, 25, 27, 166 
 
 Parishii 28, 166 
 dichotomum 55: 158, 186 
 
 ovatifolium 159, 186 
 Diguetii 4: 45, 49, 168 
 dimidiatum 23: 87, 174 
 dipterum 16: 8, 70, 71, 171 
 domingense 29: 11, 102, 177 
 Dussii 28: 97, 100, 176 
 Eatoni 3: 13, 30, 33, 34, 166 
 Eduardi 4: 45, 46, 168 
 
 Eggersii 39: 8, 9, 12, 128, 143, 
 
 156, 183 
 
 ellipticum=Dendrophthora 
 emarginatum 32: 10, 12, 56, 116, 
 
 179 
 
 minor (117) 
 
 Engelmanni 3: 5, 30, 35, 164, 166, 
 167 
 
 - Claviger 35, 164, 167 
 Englerianum 42: 131, 133, 182 
 ensifolium 35: 124, 180 
 Ernstianum 33: 120, 121, 180 
 essequibense 52: 148, 149, 184 
 exigmim 19: 79, 81, 173 
 falcatum 12: (8, 10, 54) 64, 65, 
 
 170 
 
 faleifolium 18: 77, 79, 172, 181 
 falcifrons 37: 126 
 Fendlerianum 49: 142, 143, 183 
 Fici 27: 9, 95, 175 
 flavens 53: 8, 9, 13, 151, (152), 
 
 154, 185 
 
 Phoradendron continued 
 
 australe 155 
 
 flavescens 3: (35, 47, 101), 3, 9, 
 10, 11, 12, 14, 15, 16, 29, 30, 
 164, 166 
 
 glabriusculum (30) 
 
 macrophyllum (37, 38) 
 
 - orbiculatum 33, 164, 166 
 
 pubescens (35, 37) 
 
 quinquenervium (40, 167) 
 
 tomentosum (36) 
 
 villosum (40) 
 flavum (33, 152) 
 florianum (160) 
 Forestierae 10: 60, 61, 170 
 fossile 15 
 
 fragile 47: 9, 13, 140, 141, 183 
 galapageium 55: 158, 159, 186 
 Galeottii 4: 45, 46, 168 
 Gardnerianum 52: 148, 184 
 Gaumeri 31: 108, 114, 179 
 Giordanae (158, 186) 
 glandulosum (137) 
 Glaziovii 16: 70, 74, 143, 172 
 globuliferum 4: 45, 48, 168 
 globuliflorum=Dendrophthora 
 gracile 31: 56, 108, 112, 179 
 
 Ballii 113, 179 
 gracilispicum 41: 130, 181 
 granaticolum 15: 68, 70, 171 
 Greggii 3 : 30, 36, 167 
 Grisebachianum 27: 12, 95, 96, 176 
 guadalupense 2: 25, 29, 166 
 Guazumae 30: 103, 104, 177 
 Gundlaehii 28: 97, 101, 176 
 habrostachyum 19: 79, 82, 173 
 Hahnii (51) 
 
 haitense 28: 97, 99, 176 
 Hartii 28: 97, 98, 176 
 Havardianum 3: 30, 44, 168 
 Helleri 28: 97, 100, 176 
 sanguineum 100, 176 
 Henslovii 55: 158, 159, 186 
 Herbert-Smithii 19: 79, 80, 173 
 Herminieri 41: 130, 131, 181 
 hexastichum 45: 11, 135, (136, 
 138), 182 
 
INDEX NAMES 
 
 221 
 
 Phoradendron continued 
 
 - angustifolium 136, 182 
 
 - latifolium (137) 
 
 - longispicum (138, 183) 
 Heydeanum 44: 135, 182 
 Hieronymi 34: 122, 123, 180 
 holoxanthum 24: 89, 175 
 
 corallispicum 90, 175 
 Holtonis 55: 158, 161, 186 
 huallagense 54: 156, 157, 186 
 hypericif olium 16: 70, 72, 171 
 inaequidentatumrrDendrophthora 
 Jenmani 20: 83, 85, 143, 156, 174 
 Johnston! 52 : 148, 149, 185 
 juniperinum 1: 7, 12, 13, 20, 22, 24, 
 
 164, 165 
 
 Libocedri (23) 
 
 nanum 23, 165 
 Knoopii 53: 151, 152, 185 
 Kuntzei 38: 14, 127, 181 
 lanatum 4: 45, 168 
 lanceolato-ellipticum 35: 57, 124, 
 
 125, 181 
 
 lanceolatum 12: 64, 170 
 latifolium (5, 9, 15, 131, 146) 
 laurifolium (146) 
 laxiflorum 54: 11, 56, 143, 156, 157, 
 
 186 
 
 leptostachyum^zDendrophthora 
 leucocarpum=rDendrophthora 
 Libocedri 1: 7, 10, 20, 23, 164, 165 
 Liga 34: 122, 180 
 ligatum 1: 24, 164, 165 
 ligustrinum Oryctanthes 
 Lindavianum 53:11, 151, 155, 186 
 Lindeni 55: 158, 161, 186 
 linearifolium 35: 124, 143, 180 
 linifolium=? 
 
 longifolium 7: 52, 53, 169 
 longipetiolatum 20: 143, 174 
 longispicum 3 : 30, 39, 167 
 
 cyclophyllum 40 
 Lyoni 32 : 116, 179 
 macrarthron (125) 
 macrarthrum 36: 125, 181 
 macrophyllum 3: 7, 30, 37, (38), 
 
 164, 165, 167 
 
 Phorademlvon continued 
 
 circulate 38, 167 
 
 Jonesii 38 
 
 macrostachyum Dendrophthora 
 macrotomum 3 : 10, 30, 34, 164, 166 
 Mandonii 42: 131, 132, 182 
 Martianum 31 : 108, 114, 179 
 martinicense 50: (97), 144, 145, 184 
 Mathewsi 42 : 131, 133, 182 
 mazatlanum 4: 45, 47, 168 
 Meliae 33: 120, 121, 180 
 membranaceum 53 : 151, 153, 185 
 mesembryanthemifolium=Den- 
 
 drophthora 
 
 microphyllum 31: 108, 113, 179 
 minor 32: 116, 117, 179 
 minutif olium 2 : 13, 25, 165 
 mucronatum 32: 116, 118, 179 
 multiflorum 9: 58, 59, 169 
 multifoveolatum 16: 70, 71, 171 
 myrtilloides=Dendrophthora 
 nervosum 11: 61, 63, 165, 170 
 nitidum 24: 89, 90, 175 
 Northropiae 40 : 129, 156, 181 
 obliquum 22: 86, 143, 156, 174 
 oblongif olium (103) 
 obovatifolium 32 : 116, 117, 179 
 obtusissimum 25: 91, 92, 175 
 Oliverian,um 45 : 135, 136, 182 
 orbiculatum (34) 
 Ottonis 32: 116, 118, 180 
 ovalif olium 20: 83, 173 
 pachyarthron 11: 61, 62, 170 
 pachyphyllum 53 : 151, 185 
 Palmeri 4: 12, 45, 46, 168 
 paradoxum 49: 8, 13, 142, 183 
 parietarioides 13: 65, 66, 171 
 pauciflorum 2 : 25, 28, 166 
 paucifoliumrz? 
 Pearcei=: ? 
 
 pellucidulum 24: 89, 175 
 peninsulare 4: 45, 50, 169 
 pennivenium (137) 
 pepericarpum (144, 183) 
 Perrottetii 23 : 87, 88, 174 
 
 parvifolia (88) 
 peruvianum 42: 8, 9, 131, 182 
 
222 
 
 THE GENUS PHORADENDRON 
 
 Phoradendron continued 
 
 piauhyanum 31: 108, 110, 178 
 piperoides 51: 17, 145, 184 
 
 compositum 148 
 
 hexastichum 148 
 platycaulon 52: 8, 148, 150, 185 
 polygynum 21: 10, 85, 128, 174 
 Pringlei 10 : 60, 170 
 productipes 46 : 137, 138, 183 
 pruinosum 34: 122, 180 
 pteroneuron 46 : 137, 140, 183 
 puberulum 3 : 30, 42, 168 
 
 chihuahuense 43, 168 
 Purpusi 11: 61, 62, 170 
 quadrangulare 31: (106, 111), 15, 
 
 108, 178 
 
 avenium (133) 
 quinquenervium 53: 151, 153, 185 
 racemosum 46: 8, 9, 136, 143, 156, 
 
 182 
 
 reductum 25: 91, 93, 175 
 Reichenbachianum 18: (63), 77, 
 
 78, 172 
 
 Rensoni 30: 103, 105, 177 
 reticulatum (185) 
 rigidum 20: 83, 84, 174 
 Robinsonii 5: 12, 51, 169 
 Hindsi 51, 169 
 robustissimum 18: 9, 77, 78, 173 
 
 simulans 78, 173 
 Rondeletiae 17: 76, 172 
 roraimae=Dendrophthora 
 rubrum 30: (106, 111, 114), 8, 12, 
 
 13, 15, 103, 107, 178 
 brevispieum (103) 
 
 latifolium (103) 
 - longifolium (80) 
 
 longispieum (110) 
 
 mierophyllum (113) 
 rugulosum (182) 
 Rusbyi = Dendrophthora 
 saccatum 4: 45, 50, 169 
 salicifolium (108) 
 saltillense 2: 25, 27, 165 
 sanctae-martae 30: 103, 105, 177 
 scaberrimum 7: 52, 169 
 Schottii (146) 
 
 Phoradendron continued 
 Schumanni 11: 61, 62, 170 
 Selloi 24: 89, 90, 175 
 semiteres 15: 68, 69, 171 
 serpyllifolium=Dendrophthora 
 sessilifolium=Dendrophthora 
 spathulifolium (178) 
 squamigerum^zDendrophthora 
 stenophyUum 19: 79, 81, 173 
 strongyloclados 52: 148, 149, 185 
 subtrinerve Dendrophthora 
 supravenulosum 53: 151, 154, 185 
 surinamense 52: 148, 150, 185 
 taf allaeoides=; ? 
 
 tamaulipense 21: 108, 115, 179 
 tequilense 2: 25, 26, 166 
 tereticaule (146) 
 testifolium Dendrophthora 
 tetrapterum 16: 8, 70, 72, 172 
 tetrastachynm^rDendrophthora 
 
 spathulifolium (107, 178) 
 tetrastiehus (107) 
 thyrsoideum 3: 30, 36, 167 
 thacolulense 4: 45, 48, 168 
 tomentosum 3: 30, 42, (51), 167 
 Tonduzii 14: 66, 67, 171 
 torulosum=z? 
 
 tovarense 16: 70, 73, 172 
 Townsendi 31: 56, 108, 112, 179 
 Trianae 15: 68, 171 
 trinervium 30: 8, 11, 12, 102, 103, 
 
 (105), 177 
 
 trisulcatum 53: 151, 155, 185 
 tubulosum 15: 68, 171 
 tucumanense 38: 127, 181 
 tumidum 4: 45, 49, 168 
 tunaeforme 48: 13, 141, 183 
 turbinispicum 16: 70, 75, 172 
 ulophyllum 19: 79, 82, 173 
 uncinatum 55: 158, 160, 186 
 undulatum 41: 9, 130, 181 
 Urbanianum 53: 151, 155, 185 
 uspantanum 7: 52, 53, 169 
 velutinum 6: 51, 169 
 venezuelense, 31: 106, 108, 111, 178 
 Verleyseni 15: 68, 69, 171 
 
 chimboense 69, 171 
 
INDEX NAMES 
 
 223 
 
 Phorademlron continued 
 
 Fraseri 69 
 
 vernicosum 26: 8, 93, 95, 175 
 villosum 3: 10, 12, 30, 40, 164, 
 
 165, 167 
 
 - rotundifolium 42, 167 
 viscifolium 31: 108, 109, 178 
 vulcanicum 17: 76, 77, 172 
 Warmingii 43: 134, 182 
 Wattii 28: 10, 97, 99, 143, 176 
 
 productum 100, 176 
 Wawrae 26: 93, 94, 175 
 Wiesnerianum 31: 108, 109, 178 
 Wilkinson! 3: 30, 44, 168 
 yucatanum 32: 116, 118, 180 
 zacapanum 31: 108, 115, 179 
 Zuloagae 30: 103, 105, 165, 177 
 
 Phoradendrum anceps (98) 
 annulatum (58) 
 argenteum (121) 
 bilineateum (84) 
 Campbellii (96) 
 caracasanum (120) 
 carneum (60) 
 chrysocarpum (97) 
 
 Dussii (100) 
 coriaceum quintense (82) 
 crassifolium (144) 
 crenulatum (101) 
 Crulsii (74) 
 cuneifolium (119) 
 cymosum (159) 
 dichotomum (158) 
 dimidiatum (87) 
 Eggersii (128) 
 
 Fici (95) 
 Havens (154) 
 Gardnerianum (148) 
 Glaziovii (74) 
 Grisebachianum (96) 
 Gundlachii (101) 
 hai tense (99) 
 Hartii (98) 
 hexastichum (135, 136) 
 
 angustifolium (136) 
 Kuntzei (127) 
 latifolium (146) 
 
 Phoradendrum continued 
 
 hexastichum (148) 
 Liga (122) 
 longipetiolatum (84) 
 mucronatum (118) 
 obliquum (86) 
 obtusissimum (92) 
 ovalifolium (83) 
 pachyarthron (62) 
 paradoxum (142) 
 pruinosum (122) 
 quadrangulare (108) 
 
 gracile (112) 
 racemosum (137) 
 reticulatum (152) 
 rigidum (84) 
 rubrum (111) 
 rugulosum (134) 
 spathulifolium (107) 
 tetrapterum (72) 
 tlacolulense (48) 
 tovarense (73) 
 trinervium (103) 
 
 - domingense (102) 
 
 tubulosum (68) 
 
 tueumanense (127) 
 
 undulatum (130, 131) 
 
 Wattii (99) 
 
 Phthirusa domingensis (102) 
 Spiciviscum polygnum (85, 174) 
 Viscum affine (113, 179) 
 
 album (33) 215 
 
 aneeps (98, 176) 
 
 angustifolium (65, 111) 
 
 articulatum (141, 183) 
 
 Berterianum (158, 186) 
 
 Bolleanum (26) 
 
 brachystachyum (47, 168) 
 
 clavatum (217) 
 
 cornifolium (146, 148, 184) 
 
 crassifolium (144, 183) 
 
 dichotomum (158, 186) 
 
 dimidiatum (87, 174) 
 
 egense (145) 
 
 ellipticum (146, 184) 
 
 ensifolium (124, 180) 
 
 falcatum (8, 10, 54, 65, 169) 
 
224 
 
 THE GENUS PHORADENDRON 
 
 Viscum continued 
 falcifrons (126, 181) 
 flavens (33, 154) 
 flavescens (30, 32) 
 florianum (160) 
 Fockeanum (146) 
 galapageium (159, 186) 
 glandulosum (137, 182) 
 Henslovii (159, 186) 
 hexastichum (135, 182) 
 interruptum (125, 181) 
 jamaicense (103) 
 Kunthianum (109) 
 lanceolato-ellipticum (125, 181) 
 latifolium (137, 145) 
 laurifolium (146, 184) 
 leucarpum (30, 33) 
 leucocarpum (30) 
 Liga (122, 180) 
 longifolium (53) 
 macrophyllum (137, 154, 182) 
 martinicense (145, 184) 
 microphyllum (113, 179) 
 mimosearum (42) 
 mucronatum (118) 
 myrtilloides (103, 136, 177) 
 nitidum (90, 175) 
 obliquum (86, 174) 
 oblongifolium (31, 33, 103, 104, 
 177) 
 
 Viscum continued 
 obtusissimum (92, 175) 
 ochroleucum (30, 32) 
 pennivenium (137) 
 Perrottetii (88, 174) 
 piperoides (146) 
 purpureum (33, 166) 
 quadrangulare ( 108 ) 
 racemosum (137) 
 Reichenbachianum (25, 78) 
 rubrum (107, 178) 
 rugosum (31, 32) 
 salicifolium (108, 178) 
 saururoides (146, 184) 
 Schiedeanum (65) 
 Schottii (146, 184) 
 serotinum (30, 32, 33, 166) 
 stenophyllnm (65) 
 tetragonum (103) 
 tereticaule (146) 
 - cubense (146, 184) 
 teretifolium (146) 
 tomentosum (42) 
 trigonum (103) 
 trinervium (103, 177) 
 tunaeforme (141, 183) 
 undulatum (130, 181) 
 velutinum (51, 169) 
 verticillatum (31) 
 villosum (40) 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 1 
 
 PHORADEXDROX VILLOSUM 
 
TEELEA8E, PHOBADENDBON 
 
 PLATE 2 
 
 PHORADENDBON LIBOCEDRI 
 
 
 PHORADENDROX JUNIPERINUM 
 
TRELEASE, PHORADENDROX 
 
 PLATE 3 
 
 PHORADEXDRON LIGATUM x 10 
 
TRELEASE, PHORADENDRON 
 
 PLATE 4 
 
 PHORADEXDRON JUNIPERINUM x 5 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 5 
 
 STAMINATE SPIKES FLA VESCENTES x 3 
 
 PISTILLATE SPIKES FLA VESCENTES x 3 
 
TBELEASE, PHORADEXDRON 
 
 PLATE 6 
 
 PHORADENDRON LIBOCEDRI x 10 
 
 PHORADENDRON VILLOSUM x 10 
 
TIfKLEASE, PHOEADENDEON 
 
 PLATE 7 
 
 PHORADEXDRON SEPAL NUMBERS x 10 
 
TRELEASE, PHORADENDRON 
 
 PLATE 8 
 
 PHORADENDRON CALIFORNICUM x 10 
 
 PHORADENDRON NERVOSUM x 10 
 
TRELEASE, PHORADENDRON 
 
 PLATE 9 
 
 PHORADENDRON FRUITING CALYX x 10 
 
TRELEASE. PHORADENDROX 
 
 PLATE 10 
 
 PHORADEXDROX EXDOCABP xlO 
 
TRELEASE, PHORADENDRON 
 
 PLATE 11 
 
 
 PHORADENDROX CALIFORNICUM 
 
THKI.KASK, I'HOFfAf. 
 
 IT.A'I 
 
 PHORA OK.V ORO.V CALIf O 
 
TRELEASE, PHORADENDRON 
 
 PLATE 13 
 
 PHORADENDRON CALIFORNICUM DISTANS 
 
TRELEASE, PHORADENDRON 
 
 PLATE 14 
 
 PHORADENDRON JUNIPERINUM 
 
 PHORADENDRON JUNIPERINUM NANUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 15 
 
 PHORADENDRON LIBOCEDRI 
 
 PHORADENDRON LIGATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 10 
 
 PHORADENDRON MINUTIFOLIUM 
 
 PHORADENDRON SALTILLENSE 
 
TRELEASE, PHOBADENDBON 
 
 PLATE 17 
 
 PHORADEXDROX CAPITELLATUM 
 
TEELEASE, PHORADENDEON 
 
 PLATE 18 
 
 PHORADENDEON TEQUILENSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 19 
 
 PHORADENDRON BOLLEANUM 
 
 
TRELEASE, PHORADENDROX 
 
 PLATE 20 
 
 PHORADENDRON DENSUM 
 
TEELEASE, PHORADENDRON 
 
 PLATE 21 
 
 PHORADENDRON DENSUM PARISHII 
 
TRELEASE, PHORADEXDBON 
 
 PLATE 22 
 
 PHORADENDRON PAUCIFLORUM 
 
 PHORADENDRON GUADALUPENSE 
 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 
 
 PHORADENDROX GUADALUPENSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 24 
 
 PHORADENDRON FLAVESCENS 
 
TRELEASE, PHORADENDKOX 
 
 PLATE 25 
 
 PHORADENDRON FLAVESCENS 
 
TRELEASE, PHORADENDKON 
 
 PLATE 20 
 
 PHORADENDRON FLAVESCENS ORBICULATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 27 
 
 PHORADENDRON MACROTOMUM 
 
TRELEASE, PHOBADENDBON 
 
 PLATE 28 
 
 PHORADENDRON EATONI 
 
TRKLEASE, PHORADENDRON 
 
 PLATE 29 
 
 PHORADENDRON ENGELMANNI 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 30 
 
 PHORADENDRON ENGELMANNI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 31 
 
 PHORADENDRON ENGELMANNI 
 
 PHORADENDRON ENGELMANNI CLAVIGER 
 
TRELEASE, PHOBADENDBON 
 
 PLATE 32 
 
 PHOBADENDBON GBEGGII 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 33 
 
 PHORADEXDROX COLIPEXSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 34 
 
 PHORADENDRON MACROPHYLLUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 3o 
 
 PHORADENDRON MACROPHYLLUM CIRCULARE 
 
 PHORADEXDROX MACROPHYLLUM JOXESII 
 
TRELEASE, PHORADENDBON 
 
 PLATE 36 
 
 PHORADENDRON COCKERELLII 
 
TRELEASE, PHORADENDRON 
 
 PHORADENDRON COLORADEXSE 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 38 
 
 PHORADENDRON LONGISPICUM 
 
TRKLEASE, PHORADENDRON 
 
 PLATE 39 
 
 PHORADENDRON LONGISPICUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 40 
 
 PHORADENDROX VILLOSUM 
 
TRELEASE, PHOKADENDEON 
 
 PLATE 41 
 
 PHORADENDRON VILLOSUM ROTUNDIFOLIUM 
 
 PHORADENDRON TOMENTOSUM 
 
TEELEASE, PHORADENDRON 
 
 PLATE 42 
 
 
 PHORADENDRON TOMENTOSUM 
 
TRKLKASK, PHORADENDRON 
 
 PLATE 43 
 
 PHORADENDRON PUBERULUM 
 
 PHORADENDRON PUBERULUM CHIHUAHUENSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 44 
 
 PHORADENDRON CORYAE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 45 
 
 PHORADENDRON HAVARDIANUM 
 
 PHORADENDRON WILKINSONI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 46 
 
 PHORADENDRON LANATUM 
 
 PHORADENDRON GALEOTTII 
 
TRELEASE, PHORADENDEON 
 
 PLATE 47 
 
 PHORADENDRON PALMER! 
 
 PHORADENDRON EDUARDI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 48 
 
 PHORADENDRON MAZATLANUM 
 
 PHORADENDRON BRACHYSTACHYUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 49 
 
TBELEASE, PHORADENDBON 
 
 PLATE 50 
 
 . 
 
 PHORADENDBON TLACOLTJLENSE 
 
TRELEASE, PHORADENDEON 
 
 PLATE 51 
 
 PHORADENDRON GLOBULIFERUM 
 
TBELEASE, PHORADENDRON 
 
 PLATE 52 
 
 PHORADENDRON AUREUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 53 
 
 PHORADENDRON BRACHYPHYLLUM 
 
 PHORADENDRON TUMIDUM 
 
PLATE 54 
 
 PHORADENDKON DIGUETH 
 
TRELEASE, PHORADENDRON 
 
 PLATE 55 
 
 PHORADENDRON PENINSULARE 
 
 PHORADENDRON SACCATUM 
 
TBELEASE, PHORADENDRON 
 
 PLATE 56 
 
 I 
 
 PHORADENDRON ROBINSONII 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 57 
 
 PHORADENDRON ROBINSONII 
 
 J 
 PHORADENDRON ROBINSONII HINDSI 
 
TEELEASE, PHOEADENDBON 
 
 PLATE 58 
 
 PHOEADENDEON VELUTINUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 59 
 
 PHORADENDROX SCABERRIMUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 60 
 
 
 PHORADENDRON LONGIFOLIUM 
 
 
TRELEASE, PHORADENDRON 
 
 PLATE 61 
 
 PHORADENDRON USPANTANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 62 
 
 PHORADENDRON CALYCULATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 63 
 
 PHORADENDRON CALYCULATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 64 
 
 PHORADENDRON CALYCULATUM FILIPES 
 
 PHORADENDRON CALYCULATUM GONZALEZI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 65 
 
 PHORADENDRON ANNULATUM 
 
TEELEASE, PHOEADENDRON 
 
 PLATE 66 
 
 PHORADENDBON MULTIFLORUM 
 
TR EL EASE, PHORADENDRON 
 
 PLATE 67 
 
 PHORADENDRON MULTIFLORTM 
 
TRELEASE, PHOEADENDRON 
 
 PLATE 68 
 
 PHORADENDRON AMPLIFOLIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 69 
 
 PHORADENDRON CARNEUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 70 
 
 PHORADENDRON PRINGLEI 
 
 PHORADENDRON FORESTIERAE 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 71 
 
 PHORADENDRON PACHYARTHRON 
 
 PHORADEXDRON SCHUMAXXI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 72 
 
 PHORADENDRON SCHUMANNI 
 
PLATE 73 
 
 PHOKADENDRON PUBPUSI 
 
TBELEASE, PHORADENDRON 
 
 PLATE 74 
 
 PHORADENDRON NERVOSUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 75 
 
 PHORADENDRON CONZATTII 
 
 PHORADENDRON CONZATTII TECOMATLANUM 
 
TBELEASE, PHORADENDRON 
 
 PLATE 76 
 
 PHORADENDRON CONZATTII NOCHIXTLANENSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 77 
 
 PHORADENDRON LANCEOLATUM 
 
TRELEASE, PHORADENDEON 
 
 PLATE 78 
 
 PHORADENDRON FALCATUM 
 
TBELEASE, PHORADEXDRON 
 
 PLATE 79 
 
 PHORADENDRON ANGUSTIFOLIUM 
 
TRELEASE, PHORADENDEON 
 
 PLATE 80 
 
 
 
 PHORADENDRON PARIETARIO1DES 
 
TRELEASE, PHORADENDRON 
 
 PLATE 81 
 
 PHORADENDRON CORYNARTHRON 
 
TRKLKASK, PHORADENDRON 
 
 PLATE 82 
 
 PHORADENDRON TONDUZII 
 
TKELEASE, PHORADENDRON 
 
 PLATE 83 
 
 PHORADENDRON COOPERI 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 84 
 
 PHORADENDRON TUBULOSUM 
 
 PHORADENDRON TRIARAE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 85 
 
 PHORADENDRON SEMITERES 
 
T R. EL E AS E, PHORAD ENDRON 
 
 I'LATE 86 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 87 
 
 r 
 
 PHORADENDRON VERLEYSENI CHIMBOENSE 
 
 PHORADEXDROX GRANATICOLUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 88 
 
TRELEASE, PHORADENDRON 
 
 PLATE 89 
 
 PHORADENDRON DIPTERUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 90 
 
 PHORADENDRON MULTIFOVEOLATUM 
 
TRELEA8E, PHORADENDRON 
 
 PLATE 91 
 
 PHORADENDRON HYPERICIFOLIUM 
 
 PHORADENDRON DEMERARAE 
 
TRELEASE, PHORADENDBON 
 
 PLATE 92 
 
 PHORADENDRON TETRAPTERUM 
 
TRELEASE, PHOBADENDBON 
 
 PLATE 93 
 
 PHORADENDRON TOA T AREXSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 94 
 
 PHORADENDRON CRULSII 
 
 PHORADENDRON AMPLEXICAULE 
 
TR EL EASE, PMORADEN DRON 
 
 PLATE 95 
 
 
 PHORADENDRON AMPLECTENS 
 
TRELEASE, PHORADENDEON 
 
 PLATE 96 
 
 PHORADENDRON GLAZIOVII 
 
 PHORADENDRON TURBINISPICUM 
 
TK KL HAS K, PHORADKNDRON 
 
 PLATE 97 
 
 PHORADENDRON BREVIFOLIUM 
 
TRE LEASE, PHORADENDRON 
 
 PLATE 98 
 
TKELE ASK, PIIOH A I ) EN DRON 
 
 PLATE 99 
 
 PHORADENDEON VULCANICUM 
 
 PHORADENDRON CRISP UM 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 100 
 
 PHORADEXDROX REICH EXBACHTAXUM 
 
 PHORADEXDROX FALCIFOLIUM 
 
TK KLKASE, PHOR A I K M >KOX 
 
 PLATK lol 
 
 PHORADENDRON BOBU8TIS8IM I * M 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 102 
 
 PHORADEXDROX ROBUST JSS [MUM SIMULAXS 
 
TKKLEASE, PHOBADENDRON 
 
 PLATE 103 
 
 PHORADENDROX CONGESTUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 104 
 
 PHORADENDRON CONGESTUM 
 
 PHORADENDRON CARIPENSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 105 
 
 PHORADENDRON HERBERT-SMITHII 
 
TRELEASE, PHORADENDBON 
 
 PLATE 106 
 
 PHOBADENDBON EXICITM 
 
 PHORADENDRON 8TENOPHYLLUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 107 
 
 PHORADENDRON CORIACEUM 
 
 PHORADENDRON CORIACEUM QUINTENSE 
 
PHOBADENDRON 
 
 PLATE 108 
 
 PHORADENDRON ULOPHYLLUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 109 
 
 
 PHORADENDRON HABROSTACHYUM 
 
TBKLKASK, PHOBADENDEON 
 
 PL ATK lln 
 
 PHORADEXDROX OVALIPOLIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 111 
 
 PHORADENDRON LONGIPETIOLATUM 
 
TRELEASE, PHOBADENDEON 
 
 PLATE 112 
 
 7 
 
 PHORADENDRON B1L1NEATUM 
 
TRELEASE, PHOEADENDRON 
 
 PLATE 113 
 
 PHORADENDRON RIGIDUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 114 
 
 PHORADEXDRON JEXMANI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 115 
 
 PHORADENDRON POLTGYNUM 
 
TRELEASE, PHORADENDEON 
 
 PLATE 116 
 
 PHORADENDRON POLYGYNUM 
 
 PHORADENDRON BRIQUETIA^ I M. 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 117 
 
 PHORADEXDRON OBLIQUUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 118 
 
 PHORADENDRON DIMIDIATUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 119 
 
 PHORADENDRON PERROTTETII 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 120 
 
 Ur 
 
 PHORADEXDROX BATHYORYCTUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 121 
 
 
 PHORADENDRON PELLUCIDULUM 
 
TRELEASE, PHOEADENDEON 
 
 PLATE 122 
 
 PHOBADENDEON HOLOXANTHUM 
 
 PHORADENDEON HOLOXANTHUM COEALLISPICUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 123 
 
 PHORADENDRON NITIDUM 
 
 PHORADENDRON SELLOI 
 
TBELEASE, PHORADEXDRON 
 
 PLATE 124 
 
 PHORADENDRON CRASPEDOPHYLLUM 
 
 PHORADEXDROX CRASPEDOPHYLLOIDES 
 
TRELEASE, PHORADENDRON 
 
 PLATE 125 
 
 PHORADEXDRON OBTU8ISSIMUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 126 
 
 PHORADENDRON ACINACIFOLIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 127 
 
 PHORADENDRON ACINACIFOLIUM 
 
 PHORADENDRON REDUCTUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 128 
 
 PHORADENDRON WAWRAE 
 
TRELEASE, PHOBADENDEON 
 
 PLATE 129 
 
 PHOEADENDBON CHEIROCARPUM 
 
 PHOBADEXDBOX DECUSSATUM 
 
TRELEASE, PHORADEXDEON 
 
 PLATE 130 
 
 PHORADENDRON VERNICOSUM 
 
TEELEASE, PHORADEXDRON 
 
 PLATE 131 
 
 PHORADENDRON FICI 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 132 
 
 PHORADEXDRON CAMPBELLII 
 
TKHLEASE, PHOKADKNDRON 
 
 PLATK I.".:! 
 
 PHOR ADENDRON GR I S K BACH I A M ' M 
 
TBELEASE, PHOBADENDBON 
 
 PLATE 134 
 
 PHOEADENDBON CHEYSOCABPUM 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 135 
 
 PHORADENDRON ANCEPS 
 
 PHORADENDRON HAITENSE 
 
TRELEASP;, PHORADEXDRON 
 
 PLATE 136 
 
 PHORADENDRON HARTII 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 137 
 
 - 
 
 PHORADENDRON WATTII 
 
TRELEASE, PHORADENDRON 
 
 PLATE 138 
 
 PHORADENDRON WATTII 
 
 PHORADENDRON WATTII PRODUCTUM 
 
TEELEASE, PHORADEXDRON 
 
 PLATE 139 
 
 PHORADENDRON HELLERI 
 
TRKLKASK. PHOEADENDBON 
 
 1M.ATK 140 
 
 PHORADENDRON HELLERI SANGU1NKI.M 
 
 PHORADEXDROX CREXI'LATTM 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 141 
 
 PHORADEXDRON DUSSII 
 
TBELEASE, PHORADENDRON 
 
 PLATK 142 
 
 PHOBADENDBON GUNDLACHII 
 
TRELEASE, PHORADENDRON 
 
 PLATE 143 
 
 PHORADENDRON DOMINGENSE 
 
TR ELK ASK, PHOEADENDEON 
 
 PLATE 144 
 
 PHORADENDRON TRINERVIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 143 
 
 PHORADEXDRON TRINERVIUM 
 
TEELEA8E, PHOBADENDBON 
 
 PLATE 146 
 
 PHORADEXDRON TRINERYIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 147 
 
 PHORADENDRON APPUNI 
 
 PHORADENDRON APERTUM 
 
TKELEASE, PHORADEXDRON 
 
 PLATE 148 
 
 PHORADEXDRON GUAZUMAE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 149 
 
 PHORADENDRON SANCTAE-MARTAE 
 
 PHORADENDRON KENSONI 
 
TRELEASE, PHOBADENDBON 
 
 PLATK 
 
 PHOBADENDRON ZULOAGAE 
 
 PHORADENDEON COMMUTATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 151 
 
 PHORADENDRON COMMUTATUM 
 
TKKLEASE, PHORADEXDRON 
 
 PLATE 152 
 
 PHORADENDRON RUBRUM 
 
PLATE 153 
 
 PHORADEXDROX RUBRUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 154 
 
TRELEASE, PHORADENDRON 
 
 PLATE 155 
 
 PHORADENDRON QUADRANGULARE 
 
 PHORADENDRON VISCIFOLIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 156 
 
 PHORADENDRON WIESNERIANUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 157 
 
 
 PHORADENDRON PIAUHYANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 158 
 
 PHORADENDRON CEIBANUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 159 
 
 PHORADENDROX VEXEZUELEXSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 160 
 
 PHORADENDRON ANTILLARUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 161 
 
 r 
 
 PHORADENDRON ANTILLARUM ORIENTALE 
 
 PHORADENDRON ANTILLARUM LONGUM 
 
TEELEASE, PHORADENDRON 
 
 PLATE 162 
 
 PHORADENDRON TOWNSENDI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 1C3 
 
 PHORADENDRON GRACILE 
 
TRELEASE, PHORADEN T DRON 
 
 PLATE 164 
 
 PHORADENDRON MICROPHYLLUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 165 
 
 PHORADENDRON AFFINE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 166 
 
 ' 
 
 PHORADENDRON MARTIANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 167 
 
 PHORADENDRON GAUMERI 
 
 PHORADENDRON TAMAULIPENSE 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 168 
 
 PHORADENDRON ZACAPAXUM 
 
TBELEASE, PHORADEXDRON 
 
 PLATE 169 
 
 PHORADEXDRON LYONI 
 
TRKLEASE, PHORADENDRON 
 
 PLATE 170 
 
 PHORADENDRON EMARGINATUM 
 
TKELEASE, PHORADENDRON 
 
 PLATE 171 
 
 PHORADENDROX OBOVATIFOLIUM 
 
TRELEA8E, PHORADENDRON 
 
 PLATE 172 
 
 PHORADENDRON MINOR 
 
 PHORADENDRON MUCRONATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 173 
 
 PHORADENDEON YUCATANUM 
 
 PHORADENDRON OTTONIS 
 
TRELEASK, PHOBADENDBON 
 
 PLATE 174 
 
 PHORADENDRON DEGENIANUM 
 
 PHORADENDRON CUNEIFOLIUM 
 
TRELEASE, PHORADENDROX 
 
 PLATE 175 
 
 PHORADENDRON CEARENSE MINOR 
 
TRELEASE, PHORADENDRON 
 
 PLATE 176 
 
 PHORADENDRON CEARENSE 
 
 PHORADENDRON CARACASANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 177 
 
 PHORADENDRON ARGENTINUM 
 
 PHORADENDRON ERNSTIANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 178 
 
 PHORADENDRON MELIAE 
 
 PHORADENDRON PRUINOSUM 
 
TRELEASE, PHOEADENDRON 
 
 PLATE 179 
 
 PHORADENDRON LIGA 
 
TRELEASE, PHORADENDROX 
 
 PLATE 180 
 
 PHORADENDRON LIGA 
 
 PHORADENDRON HIERONYMI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 181 
 
 PHORADENDRON LINEARIFOLIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 182 
 
 
 PHORADENDRON ENSIFOLIUM 
 
TEELEASE, PHORADENDEON 
 
 PLATE 183 
 
 
 PHOEADENDBON LANCEOLATO-ELL1PTICUM 
 
TBELEASE, PHORADEXDRON 
 
 PLATE 184 
 
 PHORADENDRON MACRARTHRUM 
 
TBELEA8E, PHORADEXDRON 
 
 PLATE 185 
 
 PHORADENDRON FALCIFRONS 
 
TRELEASE, PHORADENDRON 
 
 PLATE 186 
 
 PHORADENDRON FALCIFRONS 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 187 
 
 
 PHORADENDRON TUCUMANENSE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 188 
 
 PHORADENDRON TUCUMANENSE 
 
 PHORADENDRON KUNTZEI 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 189 
 
 PHORADENDRON NORTHROPIAE 
 
TRELEASE, PHORADENDRON 
 
 PLATE 190 
 
 PHORADENDRON UNDULATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 191 
 
 PHORADENDRON UNDULATUM 
 
 PHORADENDRON HERMINIERI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 192 
 
 PHORADENDRON GRACILISPICUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 193 
 
 PHORADENDRON PERUVIANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 194 
 
 PHORADENDRON BALANSAE 
 
TRELEASE, PHORADENDEON 
 
 PLATE 195 
 
 PHORADENDRON BALANSAE HASSLERI 
 
 PHORADENDRON AVENIUM 
 
 
TRELEASE, PHORADENDRON 
 
 PLATE 196 
 
 PHORADENDRON ENGLERIANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 197 
 
 PHORADENDRON MANDONII 
 
 
 PHORADENDRON MATHEWSI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 198 
 
 PHORADENDRON WARMINGII 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 199 
 
TRELEASE, PHORADENDRON 
 
 PLATE 200 
 
 PHORADENDRON HEXASTICHUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 201 
 
 PHORADENDRON HEXASTICHUM ANGUSTTFOLIUM 
 
 PHORADENDRON OLIVERIANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 202 
 
 PHORADENDRON RACEMOSUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 203 
 
 1 
 
 
 PHORADENDRON RACEMOSUM 
 
TR ELE AS E, PHOR AD EN DROX 
 
 PLATE 204 
 
 PHORADENDRON PRODUCTIPES 
 
TRELEASE, PHORADEXDEON 
 
 PLATE 205 
 
 PHORADENDRON CERINOCAEPUM 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 206 
 
TEELEASE, PHOEADENDEON 
 
 PLATE 207 
 
 PHOBADENDBON CAEINATUM 
 
TRELEASE, PHORADENDROX 
 
 PLATE 208 
 
 PHORADENDRON BRITTONIANUM 
 
 
 PHORADENDRON PTERONEURON 
 
TRELEASE, PHORADENDRON 
 
 PLATE 209 
 
 PHORADENDRON PTERONEURON 
 
TRELEASE, PHORADENDRON 
 
 PLATE 210 
 
 PHORADENDRON FRAGILE 
 
TR EL EASE, PHORADENDEON 
 
 PHORADENDRON EGGERS1I 
 
 PHORADENDRON FENDLERIANUM 
 
TBELEASE, PHORADENDRON 
 
 PLATE 212 
 
 
 PHORADENDRON PARADOXUM 
 
TRELEASE, PHORADEXDRON 
 
 PLATE 213 
 
 PHORADENDRON CRASSIFOL1UM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 214 
 
 PHORADENDRON CRASSIFOLIUM 
 
 PHORADENDRON CRASSIFOLIUM MULTIFLORUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 215 
 
 PHORADENDRON CRASSIFOLIUM PITTIERI 
 
TRELEASE, PHORADENDRON 
 
 PLATE 21G 
 
TRELEASE, PHORADENDRON 
 
 PLATE 217 
 
 Vdt 
 
 PHORADENDRON PIPEROIDES 
 
TKKLKASi;, I'HORADKXDROX 
 
 IM,ATK 
 
 
 f/r ?, 
 
 PHORADEXDEON PIPEROIDES 
 
TRELEASE, PHORADEXDROX 
 
 PLATK 
 
 PHORADEXDROX PIPEROIDES 
 
TRELEASE, PHORADENDRON 
 
 PLATE 220 
 
 * ? 
 
 I 
 
 PHORADENDRON PIPEROIDES 
 
TRELEASE, PHORADENDRON 
 
 PLATE 221 
 
 PHORADENDRON PIPEROIDES 
 
TRELEASE, PHORADEXDRON 
 
 PLATE L':^ 
 
 
 PHORADENDRON PIPEROIDES 
 
TRELEASE, PHORADENDRON 
 
 PLATE 223 
 
 PHORADENDRON GARDNERIANUM 
 
 PHORADENDRON ESSEQUIBENSE 
 
TKELEASE, PHORADENDRON 
 
 PLATE 224 
 
 PHORADENDRON STRONGYLOCLADOS 
 
TRELEASE, PHORADENDROX 
 
 PLATE 223 
 
 PHORADENDRON JOHNSTONI 
 
 PHORADENDRON CAESALPINIAE 
 
TKELEASE, PHORADENDEON 
 
 PLATE 226 
 
 PHORADENDEON SURINAMENSE 
 
TR ELK ASK, PHORADENDROX 
 
 PLATK i'L'7 
 
 TT^i 
 
 PHORADENDRON PLATYCAULON 
 
TRELEASE, PHORADENDRON 
 
 PLATE 228 
 
 PHORADENDRON PACHYPHYLLUM 
 
 PHORADENDRON KNOOPH 
 
TRELEASE, PHORADENDRON 
 
 PLATE 229 
 
 PHORADENDRON CHRYSOCLADON 
 
TEELEASE, PHORADENDROX 
 
 PLATE 230 
 
 PHORADENDRON CHRYSOCLADON 
 
TRELEASE, PHORADENDRON 
 
 PLATE 231 
 
 PHORADENDRON MEMBRANACEUM 
 
 PHORADENDRON QUINQUENERVIUM 
 
PLATE 232 
 
 L 
 
 PHORADENDRON SUPRAVENULOSUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE, 233 
 
 PHORADENDRON FLA YENS 
 
TBELEASE, PHORADENDRON 
 
 PLATE 234 
 
 PHORADENDRON TRISULCATUM 
 
 PHORADEXDROX URBAN 1 A N I .M 
 
TRELEASE, PHORADENDRON 
 
 PLATE 235 
 
 . 
 
 PHORADENDRON LINDAVIANUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 236 
 
 PHORADENDRON LAXIFLORUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 237 
 
 PHORADENDRON HUALLAGENSE 
 
 PHORADENDRON DICHOTOMUM 
 
TRELEASE, PHORADEXDROX 
 
 PLATE 238 
 
 PHORADENDROX DICHOTOMUM 
 
TRELEASE, PHORADENDROX 
 
 PLATE 239 
 
 PHORADENDRON DICHOTOMUM 
 
 PHORADENDRON DICHOTOMUM OVATIFOLIUM 
 
TKKLKASE, PHORADEXDRON 
 
 PLATK 
 
 PHORADENDROX CYMOSUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 241 
 
 . 
 
 I 
 
 I I 
 
 PHORADENDRON GALAPAGEIUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 242 
 
 PHORADENDRON HENSLOVII 
 
TRELEASE, PHORADENDRON 
 
 PLATE 243 
 
 PHORADENDRON HENSLOVII 
 
 PHORADENDRON UNCINATUM 
 
TRELEASE, PHORADENDRON 
 
 PLATE 244 
 
 PHORADENDRON CAMPINENSE 
 
 PHORADENDRON HOLTON1S 
 
TKELEASE, PHORADENDRON 
 
 PLATE 245 
 
 DELESSERT 
 
 ION GENERALE 
 
 I 
 PHORADENDRON LINDENI 
 
170775 
 
THE UNIVERSITY LIBRARY 
 
 UNIVERSITY OF CALIFORNIA, SANTA CRUZ 
 
 SCIENCE LIBRARY 
 
 This book is due on the last DATE stamped below. 
 
 1971 JUN 29 
 
 N.B.- HOLD 
 
 JAN 5 
 REC'D JAN 6 
 
 MAY 15 '82 
 
 *" 
 
 D MAY 2 9 1982 
 
 . 
 
 JUN 1 3 2 
 
 BEC 
 
 JO 
 
 N 
 
 '8 
 
 " 
 
 >Om-4,'69(J7948s8)2477 
 
OM95 PS6T7 So 
 
 III II 
 
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