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'^^^^^^•^'^mFm^fi^mm DEPARTMENT OF THE INTERIOR 3^/ y^ 7^ MONOGRAPHS OK THK United States Geological Survey VOLUME XXXV WASHINGTON GOVERNMENT PRIMING OFFICE 181)8 ''^^ >-.*-*-—'-- .llli||pt|i|ipipi!IJ^iflJl,^.pii|!lllWi|. ll,lpiJ!lil,l .J JLU-JvUflPl.., ■.*#&.; UNITED STATES GEOLOGICAL SURVEY CHARLES D. WALCOTT, DIRECTOR THE LATER EXTINCT FMAS OF IRTH IMERICi BT JOHN STRONG NEWBERRY A POSTHUMOUS WORK EDITED BT ARTHUR HOLLICK M WASHINGTON aOVBRNMENT PRINTING OFPIOB 1898 ,M|Jli;||Wl|»»Jli».il'M'''i^AWU'*iPi^lWiiPPfBPPni"IW!^Wf^^ ^*-*;9' .:'t:*'. CONTENTS. Letter of transmittal .. xiii Editor's preface xv Descriptions of species ■ i Cryptogamia 1 Pteridophyta 1 Filicinae 1 Equisetacese 14 Phanerogamia 18 GymnospermsB 16 CyculmiefB 16 Con ferae 17 Angiospannae 27 Monocctyledoneee 27 • i' Graminese 27 -:... PaluiBB.. 27 Smilaceee 83 Iridaceop 83 Monocotyledon of uncertain aiSnities 33 Dicotyledonew . 88 y -i/ ^ JuglandacesB 88 Myricaceae ' 37 Salicacete .• 87 Betnlaceee 59 FagacesB 68 Ulmaceae 80 MoracesB '.'i:'Ji. ., 84 AristolochiacesB 90 Nymphwaceae , 91 Magnoliaceae 04 BerberidacesB 07 Lauraceae 98 Hamamelidacea? loO Platanacew 102 Bosacew 110 Lsgaminosee 118 Anacardiaceae IK AceraceaB 115 SapiudacesB 116 Bhaninacea» II7 V Vl * CONTENTH. Descriptions of ftpecies — Continued. Phaiiorogatnia— ('nutinund. Angiospennip— Continued, DicotyledoneiD— Continued. Page. VitacoiB 120 Tiliaoew 120 Araliaoeee 121 CorniK-ete 124 Sapotaceee 186 01eaceu< 127 CaprifoliacenB 188 DicotyledoneiB of uncertain affinities 182 Table of distribution 140 Index 201 %." ILLUSTRATIONS. Pace. Platk I. Fio. 1. Quercus saliuifolia Newb , 150 3, Nyssa vetustii Newb 156 3. Fais;u8 cretacea Nowb .,... 156 4. Plai.muHlatilobaNewb , 156 5. na. Aritucaria sputiilatn Newb 156 6. Sphoiiopterls corrugata Newb 156 7. PyruB cretacea Newb 156 II. Fios. 1, 8. Solix ouneaU Newb 158 8. Salix Meekii Nowb 158 ■1. Salix Hexuosa Newb 158 5-8h. Salix rncmbranacea Newb 158 UI. Fios. 1, 2. Populus eliiptica Nowb , 160 3, 4. Populus oyeloi)hylla Heer 160 .'). Populus microphylla Newb 160 6. Populua litigiosa Heer 160 7. Populus (?) conirolla Newb 160 8. Phyllltes Vanonii- Heer 100 IV. F70. i. Populus cyclophy; i Heer 168 2. Alnites grandifolii, ^Vewb 162 8. Populus (?) Debeyana Heia Kraoillimn (Lesq.) Newb 188 XV. Pios. 1, la. Anemia perjilexa Hollick 184 2, 2a. Nilg8oniaOibb8ii(Newb.)Homok 184 XVI. FlGB. 1,2. Eiiuisetniii robustuin Newb 186 8. Anemia jwriilexa Hollick 186 4, 8. Aepidium Kennerlyi Newb 186 0,0a. Sabal iniperialisDn 186 1-3. Cinnamomum Heerii Lesq '. 188 ;-0. Nyssa (?) cuneata Newb 188 1. Querela elliptica Newb 190 3-5. Qnercns banksitefolia Newb 100 1-3. Quercua foriacea Newb 102 4-0. Qnercus flexnosa Newb 192 1, 2. Populns rhomboitlea Lesq 194 8. Qnercns elliptica Newb 104 4. Popnlns flabellum Newb 104 5. Quercng corincen Newb 194 XXL Figs. 1,3. Sabal CampbelH Newb 196 XXII. Pio. 1. Cabomba (?) graciliH Newb 198 2. Cabomba inermis (Newb.) Hollick 198 8, 4. E(kaua Newb 284 3, 4. Glj'ptoatrobus Europaiua (Brong. ) Ileer 264 5, in part. Taxodium w.cidentale Newb 264 5, iu part. Taxodium disticbnra niioceuum Heer 264 6. CarpinuB grandis Ung 264 1. Ficus (?) Condoni Newb 266 2. Berberis simplex Newb 266 3. Platanus Haydenii Newb 266 4. Quercus castanopsis Newb 266 1. Ficus (?) CondoniNiwb 268 2. Vibur'jum cnneatuni Newb 268 8. Planera crenata Newb_ 368 4. Fruit of Betula ap. (?) Newb 268 1. Ficus (?) Condoni Newb. 370 2. ProtoflcuB iniequalis Newb 270 3. Planera loiigif olia Lesij 270 4. Populus polymorplia Newb ^.. 370 1. Magnolia rotundifolia Newb 378 2. Ficus membi-cTiaf^ea Newb 273 3. Platanus aspera Newb 373 4. (juercus laurifolia Newb 272 1. Protottcus invequalis Newb 274 a. Quercus SuUyi Newb _ 274 3. Quercus laurifolia Newb 874 4. Aristolochie, cordifolia Newb 274 1,1a. Pteris Rusaellii Newb 276 3-0. Acrostichum hesperium Newb. 276 1-4. Lygotliuui Kaulf UBsi Heer 278 5-6. Pecopteris (Cheilanthes) sepulte Newb 878 1-4, Anemia perplexa Hollick 280 5. Sabal gnindifolia Newb 280 6. Sabal Powellii Newb 3tJ0 1,1s. Sabal Powellii Newb 3S2 2, 2a. Sabal grandifolia Newb 2H'2 8. Mauicaria Haydenii Newb ^^g 1- Juglans occidentalis Newb 334 2. Salix atguBta Al. Br. ? 284 8-5. Zizyphus lonpifolia Newb 884 6. Quercus castanoides Newb 284 7. Equisetum Ongonense Newb , ggl 8. E(iuisetum Wyomingense Lesq 284 ta ILLUSTRATIONS. I Plate LXVI. Fias. 1-4. Juglans occidentalis Newb ^'^^ 4a-4c. Fruit of Juglans occidentalis Newb ""] "! 288 5-7. Planera variabilis Newb „^ LXVII. Fig. 1. Aralia inacrophylla Newb --.-"......!..!. 288 2, 3. Planera nervosa Newb 4. Quercns gracilis Newb \ 5,0. Ficusasarifolia minor Lesq „„„ LXVm. Pig. 1. Aralia macrophylla Newb 2, 3. Carpolithes spinosus Newb 4-6. Nordeijskioldia borealis Heer 7. Brasema(?)antiquaNewb -...--.".-........ 290 IHr, LETTER OF TRANSMITTAL. Department op the Interior, United States Geoi.O(jicai, Survey, Wasliiiiffton, I). C, June 8, 18,97. Sir: I have the honor to transmit herewith the manuscript and plates of a posthumous work on the Later Extinct Floras of North America, by Dr. John Strong Newbeiry, edited by Dr. Arthur Hollick, and to request its publication as a monograph of the Survey. Very respectfully, F. H. Knowlton, Assistant Paleontologist. Hon. Charles D. Walcott, , Director. XIII llill it.m.M^'>i.i -7 1 »» k|".,» 11 «i||Mp;^ni!qpippipppBi EDITOR'S PREFACE. Tliis volume has been prepared, in its present form, under somewhat peculiar circumstances. An edition of twenty -five jjlates, without text, was printed about 1871. These were issued under the title, Illustrations of Cretaceous aid Tertiary Plants of the Western Territories of the United States, in 1878. Subsequently a revised edition of these and forty-three additional plates was published, but was withheld from distribution, await- ing the completion of the text by Dr. Newberry. His sickness and subse- quent death stopped further progress on the work, and much that he had accomplished went for naught. Upon two sets of the plates manuscript names for the figures were placed by him. One of these sets is in the possession of Dr. Lester F. Ward, and the other was in Dr. Newberry's library, which came into the possession of the Geological Department of Columbia University after his death. From these sources I was enabled to obtain a more or less complete list of the names which it was the evident intention of the author to give to the figures. Most of these were found to refer to descriptions previously published by Dr. Newbeny,' or to species of other writers, notably Leo Lesquereux and Oswald Heer. A number, how- ever, wore apparently not referable to any published descriptions, and it became necessary to examine Dr. Newbeny's manuscript, in order to connect these names, if possible, with his notes. A thorough search was also made • ' Descriptions of fossil plants collected by Mr. George Qibbs, geologist to thn United States Northwest Boundary Commission, under Mr. Archibald Campbell, United States Commissioner: Boston Journ. Nat. Hist., Vol. VII (1863), pp. 506-524. Not-es on the later extinct floras of North America, with descriptions of some new species of fossil plants from the Cretaceous and Tertiary strata: Ann. N. Y. Lye. Nat. Hist., Vol. IX(Aoril, 1868), pp. 1-76. Brief descriptions of fossil plants, chiefly Tertiary, from western North America: Proc. U. S. Nat. Mus., Vol. V, 1883 [February and March, 1883], pp. 50?-514. EV XVI EDITOR'S PREFACE. for the type specimens, and all labels upon these were noted and compared with the names upon the plates and with tha manuscript notes. By these means it has been possible to ascertain, in nearly every case, the name which Dr. Newbeny intended to use. Those who have had access to the plates upon which he placed his names have always endeavored to preserve these names by referring, when- ever occasion demanded it, to "Newb. MSS. undisti'ibuted plates, U. S. Geol. Surv." This, however, could not be recognized as publication, and in the lapse of time some of the names were used for other species and under the rule of priority could no longer be retained for those of Dr. Newberry. It is also to be noted that names of such species as existed in manuscript only were liable to be superseded by published names of other authors, and under such circumstances Dr. Newbeny's names would have to be dropped and the others substituted. One instance in this connection is Sabal occidentalis, Newb. MSS., which became S. imperialis Dn. In arranging the text it has been thought desirable to quote Dr. New- berry's original published description in each instance, followed by his sub- sequent manuscript notes, whenever such could be obtained. In case a manuscript description was found for any unpublished species it has been included in full. In the event of no published or manuscript description having been found for any species, such name or memorandum as could be found in connection with the specimen was adopted and a note to that effect included over the editor's initials. In the case of but one figure could abso- lutely no clue be obtained as to its probable reference by Dr. Newberry. In regard to the volume entitled Illustrations of Cretaceous and Ter- •tiaiy Plants, etc.. Dr. Newbeny would never acknowledge any responsi- bility, the names accompanying the jilates having been supplied by Lesquereux, at the request of Dr. F. V. Hayden, then director of the United States Geological Survey, without Dr. Newberry's sanction, and it was evi- dently liis intention and desire to con-ect in the present volume several en'ors which appear in that one. In each instance, therefore, in which the same figm-e appears in both volumes the fact is noted, with any correction which was found necessary. The work is confessedly incomplete in certain respects, due to loss of type specimens and absence or incompleteness of manuscript, and many of Dr Newberry's reasonings and conclusions would probably not be EDITOR'S PREFACE. XVTI included if revised by him at the present time. These nuist, therefore, be accepted merely as reflectinj*' his opinions at the time when they were Avrit- ten, the editor not feelinf; liimself at liberty to alter them, and thus perhaps inaking Dr. Newberry appear to say what he might not have intended to say. It contains so much of value, however, and its contents are referred to so frequently, that the publication has ])ecome ne(!essary both as a matter of scientific record and for purposes of research. A. H. MON XXXV II ^i>pfplilppp"p«"^ T^ ^ 1W- THE LATER EXTINCT FLORAS OF NORTH AMERICA. By John Stron'- Newberky. DESCRIPTIONS OF SPECIES. CKYI^TOa^MI^. PTERIDOPIIYTA. Order FILICINiE. LliuomiiM Kaulpussi Heer. ' " PI. LXli, fi-s. 1-4. FL Skopaii; Beitr. naher Kent. Sachs. -Thiiring. i5r.i??nkohl, Vol XVIII (1801) p. 409, PI. VIII, fig. 21; IX, fig. 1. Lyr/odium neuropteroides Lesq. Hayden's Ann. Kept. 1870 [1872] p ■?84-- Tert FJ (1878), p. CI, PL V, flg. 4-7; VI, fig. 1. • ';...; Dr. C. A. Wliite lia.s collected from the Green River shales a splendid series of the fronds of a Lygodium which is apparently identical with that described by Lesquereux under the above name. These illustrate the p-owth of the plant far better than those he figures, and some of the more interesting and instructive ones are therefore now figured. Coming all from the same locality, indeed thickly impacted together and having "the same nervation, they unquestionably represent a single species, and yet it will be seen that if diversity of form were accepted as affording specific distinctions half a dozen species might be made from them; hence we are taught by them that the fossil species of Lygodium already described are based on too insufficient material, and should have comparatively little weight until confirmed by further evidence. The number of figures now given, how- ever, enable us to define this species in such a way that it is not liable to be jnistaken. As these fronds occur in the rock, the margins seem to be undulated and the lobes considerably curved and twisted. How much of this is due MON XXXV 1 THK LATER EXTINCT FLORAS OF NORTH AMERICA. to contrnction in dryinfj;' ])«fore they were Hubnuu-fred and liow mucli is natural it Ih now iinpoHsihlo to say; l)ut HjwciniouH from Currant Crenk, Or(^ states that the nervation is obscure in his specimens, and that it seems to have been buried in the parenchyma, l^he same is true of the specimens before us, and the distinctness of the nervation is exaggerated in the figures; but it can be plainly made out in some portions of the frond, and is more open and Htronger than is shown in L(^s Kornn. L('rt.|ueroux'rt spcMimoiix were collectcMl by Dr. Iliiydon on tho divide h('tw('(tn the h«'iieth(U' represent but a sinffle spc'cies, that is no proof that the roclcH which contain all of them are at one geoloj^ical level. Nearly all the wide- spread species of fossil ])lant8 and animals have ulso considerahh^ vortical ranstion. Ilenci* we can only say that if the leaf beds of Hezanne be regarded as Tertiary, it does not at all follow that the Laramie group is so simply because it contains a species closely allied to, or a distinct variety of, a fern found in these beds abroad. According to Mr. Gardner, Anemia nuhcretacea occurs at Bourne- mouth, but we know that the Bournemouth beds are somewhat later than those of Gelinden and Sezanne, and that they are on the horizon of the Fort Union beds of the upper Mis-situri country. Count Saporta does not approve Mr. Ga; ..ner's transfer of his Asplctiiinn subcretaaum to Anemia, and his reasons are (juoted by the latter in the memoir already refen-ed to, page 46. It would seem, however, that this (luestion can not be decided wi+aout the fructification, and that has i.ot yet been found. This is somewhat remarkable, considering the fact that already thousands of specimens of Anemia suhcretacea have been collected. If it were a species of Asplenium, it seems hardly possible that the fruit should ^te^ 6 THE LATER EXTINCT FLORAS OF NORTH AMERICA. be always absent, and tliis fact gives probability to the suggestion of Mr. Gardner that the fniit was borne upon independent fronds or stipes. Mr. Gardner suggests that Aspknium Foersteri Deb. and Ett., described in the Urweltlichen A{;robryen des Kreidegebirges von Aachen und Maes- tricht, PI. II, figs. 4, 7, 11, is also closely related to if not identical with Anania suhcrdacea; but in a recent visit to Aachen I had an opportunity of examining some of Debey's original specimens, and it seemed to me they were very distinct from A. suhcrdacea. A. Foersteri is a thinner, more delicate fern, with few and slender nerves and witli pinnai in-egularly lobed or undulate. I have identified this sjiecies among the plants from the Amb( y clays, many of which also occur at Aachen. The Amboy clays are about on the horizon of the Dakota sandstones, and therefore very much older than the Laramie group. Formation and locality: Cretaceous (Laramie grou})). Orcas Island, Bellingham Bay, Washington ; Point of Rocks, Wyoming; Erie, Colorado. ACSOSTICHUM HESPKRIUM Nowb. PL LXI, figs. 2-5. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 503. "Frond large, pinnate; pinnae linear, 1^ to 2 inches wide, 6 to 12 inches long, rounded at remote extremity, those in lower part of frond rounded or wedge-shaped at base, those above united by the entire base to the rachis and wMi each other; rachis of frond and midrib of pinnje strong, smooth, somewhat sinuous; nervation reticulated, lateral nerves numerous, diverging from the midrib at an acute angle, anastomosing to form elon- gated six-angled areoles; fructification unknown." This is a large and strong fern, represented in the collections by a num- ber of specimens collected by Mr. C. A. White, wliich include portions from the lower and upper })arts of the frond. In general aspect it much resem- bles Acrostichum aureuni of Florida and the West Indies; but in that species the pinnae are all sepurate and narrowed at the base, whereas in this plant near the summit of the frond they coalesce, forming a broadly palmated portion. Lesquereux, in his '^I^ertiary Flora, p. f>S, PI. IV, fig. 2, describes a large fern with a somewhfit reticulated nervation whicli lie calls (fifmuo- granima Gardneri. The pinnsje juust have been about as large and of simila)' form to those of the fern under consideratifm, and the nervation DESCRIPTIONS OF SPECIES. is also reticulated; but in Lesquereux's plant the midrib of the pinna is much stronger and is channeled, while the lateral nerves anastomose much less frequently, and it is evident that the specimens represent distinct species. Until the fructification of this fern shall be discoveied, its g'eneric relations can not be said to be established. However, the resemblance in nervation and proportions of the frond to Acrostichum is m strong that the reference to that genus seems justifiable. Mr. J. Starkie Gardner, in his Monograph of the Britisli Eocene Flora, Vol. I, p. 26, figures and describes a large Chrysodium found in the Bag- shot beds of Bournemouth, England, which he calls Chrysodium Lanzceanum, and which closely resembles that now under consideration. I find hardly any points of difference, except that Mr. Gardner represents the Bourne- mouth species as having a strong pinnate frond which terminates in a sin, the bases of which all coalesce. It is interesting, however, to find a species so closely allied to this foreign one at nearly the same geological level in this country. Formation ancllocality : Tertiary (Green River group). Green River Wyoming. Ptebis penn^.pormis Heer. ? PI. XLVIII, fig. 5. • Fl. Tert,. Helv., Vol. I (1855), p. 38, PI. XII, figs. la-Id. Pkris pHemJopemuvformis Lesq.? Tert. Fl. (1878), p. 52, P). TV, figs. .S, 4. Formalion and locality: Tei-tiary (Miocene?). Currant Creek, Oregon. Note.— I have been unable to find any manuscript relating to the above, except brief memoranda on plate and specisuen to the names and locality here quoted. — A. H. Pteris Russellh Newb. PI. LXI, figs. 1, la. Proc. IT. S. Nat. Mu3., Vol. V (March 21, 1883), p. 503. "Frond large, pinnate; pinna? crowded, linear in outline, narrow, long-pointed above, attached to rachis by entire base; decun-ent; length,' 8 THE LATER EXTINCT FLORAS OF NORTH AMERICA. ,"'::i! IG to 20 centimeters; width, 10 milliraeters; margins unduliite below, irregu- larly and coarsely toothed above; nervation fine, but distinct; branches all forked, leaving midrib at an angle of about 45 degrees, all twice or three times forked." Only the upjjcr part of the frond of this fern appears on the specimens examined, but these show a species apparently distinct from any hitherto described. In general form the pinnfc resemble those of Fteris pentuc- formis Heer (Fl. Tert. Helv., Vol. I, p. 38, PI. XII, figs. 1-ld), and P. pscu- dopenntrformis Lesq. (Tert. FL, p. 5'2, PI IV., figs. 3, 4), but it differs from the first by being a stronger plant, with wider and more coarsely toothed pinnae, and less simple nervation; from the second, by the same characters and in having the nervation less crowded, the nerve branches issuing at a greater angle, and oftener forked. Pteris erosa Lesq. (Tert. Fl., p. 53, PI. IV, fig. 8) has broader pinna;, of which the margins are set vv^ith finer and more numerous teeth. The species is dedicated to Mr. I. C. Russell, who fL'st collected it, in Vermejo Canyon, New Mexico. It has also been collected at Walsenburg, Florence, and Golden, Colorado. Formation and locality: Cretaceous (Laramie group). Vermejo Canyon, New Mexico. Onoclea sensibilis possilis Newb. PI. XXIII, fig. 3; XXIV, figs. 1-5. Onoclea sensihiUH, L., Newberry in Ann. N. Y. Lye. Nat. Hist., "Vol. IX (April, 1868), p. 39; Ills. Cret. and Tert. PI. (1878), PI. VIII, fig. 1; IX, figs. 1-3. "Froud pinnate, large; pinna;, lanceolate in outline, with waved inar- gins, more or less deeply lobed or pinnatifid, connate at their bases, form- ing a broad wing en the rachis of the frond; nervation strongly marked, more or less reticulated, the nerve of each lobe or pinnule springing from a connnon trunk, having a dendroid form, with waving branches, which often unite to form elongated huunuu, of which the largest border the rachis of the pinna; on either side, and are formed by the nerve branches of each lobe reaching over and touching, or dosely apprc • hing, the base of the nervation of the next superior lobe or pinnule." The collection of fossil plants made at Fort Union by Dr Hayden contains a great number of examples of this beautiful fern, showing the DESCRIPTIONS OF SPECIES. 9 4 tip])er and under surface of the frond, the vari.'^+.ori of form of the pinnaj of (Utferent fronds, and different ])arts of the same frond. The robust habit of this plant, tlie strong, \vaved, and reticulated ner- vation and broadly winged rachis, which seem to distinguish it at a glance from all known fossil species, suggested a comparison with some of the strong-growing tropical ferns, and it was only after a laborious examination of all the genera of exotic ferns contained in the herbaria to which I had access that T was led to turn m}- eyes nearer home, and found in Onoclea a striking and unexpected resendilauce to it. The common form of Onoclea scnsibilis grows abundantly in all parts of our country, and is one of the first plants collected by the youthful botanitit. In this we have the rachis of the fnmd more or less winged, and a nervation on the same general plan with that of the fern in question, but more distinctly reticulated than in some si^ecimens of the fossil. (See PI. XXIII, fig. 4.) By this I was at first misled, but in examining Dr. Ton-ey's var. obtiisilohntus I found the exact counterpart of the excejjtional forms in the lobation of the pinna; and in the nervation. (See PI. XXIII, fi of the fossil to Onoclea in the form of the frond, the lobation of the pinnules, and in tlu; style of nervation is, however, stronger than to Woodwardia, as will be seen' by a comparison of PI. XXIII, fig. 4— a poi-tion of the frond of the living Onoclea— with PI. - XXIV, figs. 4 and 5, corresi)onding i)orti(ms of the fossil. Among the large number of specimens obtained of this fossil fem there are none which '% 10 THE LATER EXTINCT FLORAS OF NORTH AMERICA. I'M M^ exhibit the tructifipation, au indication that this was borne on distinct fronds. If it were a speeies of Woodwardia it is ahnost certain that we should have found the fructification, since all the fronds of Woodwardia may be finiitful, and the fructifi(^atioii is generally observable in the fossil species of that genus. Since the above notes were written I have obtained a number of specimens of Onoclea from the shores of Whatcom Lake, near Bellingham liay, Washington. In this vicinity there is a great develojjment of strata which are rich in fossil plants and are about the equivalents in time of the Laramie group; but, with Ccnv exceptions, the forms are distinct. This is one of the few which are common to the two localities. Varying, as the living Onoclea does, in the size, outline, and nervation of the sterile frond — from 6 inches to 3 feet in height; from a finely reticsu- lated to au open, dichotomous nervation ; from a bipinnate frond with remote, f)bovate pinnules, to a pinnate form with wave-margined piniuc and broadly alate rachis — it plainly includes all the characters of the fossils befoi'e us, and I therefore find it impossible to separate them. This is apparently the plant described by Prof. E. Forbes (Quart. Journ. Geol. Soc. London, Vol. VII (1851), p. 103), under the name of Filicites (?) Iicbridicus, and obtained by the Duke of Argyle from the Island of Mull. It has also been met with l)y Professor Heer in collections of fossil plants from the Eocene beds of Atanekerdlv.k and »ther places in the arctic regions. (Fl. Foss. Ai-ct., Vol. VII, p. 48, PI. LXX, fig. (>.) Formation and locality: Tertiary (Fort Union gi'oup). Fort Union, Dakota. , Lastrea (Gonioptebis) Fischeri Heer?. PI. XLVIII, fig. c. Fl. Tert. Ilelv. Vol. I (18.55), p. 34, PI. IX, figs. 3a.-3e. Lastrea {Gnniopteris) Knightiana Newb. Proc. U. S. Nat. Mas., Vol. V (March 21, 1883), p. 503. "Frond large, tripinnate; pinnae linear, 2 centimeters wide, 14 to 16 centimeters long; pinnules diverging at a large angle, united for two-thirds of their length, ujjper third free, pointed, and curved upward; venation clear and exact, midrib reaching the extremity of the pinnule; tL. lateral nerves about ten on either side, parallel, curved upward." DESCRIPTIONS OF SPECIES. 11 This beiuitifiil fern may bo readily recognized by the -ifj^id exactness of its outline, the regularity and i)recision of its crowded nervation, and by the falcate curvature of the extremity of the acute pinnules. From the large angle made by the midrib of the })iniude with the raclis of the pinna the number of the pi. nules on the frond seems crowded, h; some of the pinnules the midrib has an elegant sigmoidal curve. This, with the parallel curvature of the lateral veins, gives a peculiar, exact, and elegant ;•, pect to the plant. The specimen figured was collected by Rev. Thomas Condon, at Cur- rant Creek, Oregon, where it occurs matted together in masses. Lescjue- reux has also found what he considers to be the same species at John Day Valley, Oregon. Of the described species, Lastrea Fischeri Heer (Fl. Tert. Helv. Vol. I p. 34, PI. IX, figs. 3a to 3e), resembles this most, but our plant is stronger, the pinnules are united for a greater portion of their length, are more acute, have a more crowded nervation and a distinctive upward curve. Yet these differences are rather of degree than kind, and hardly wan-ant th^ separa- tion of the American and European plants. From the species described by Lesquereux as L. Ooldiana and L. inter- media (Tert. Fl., p. 56, Fl. IV, figs. 13 and 14), this may be distinguished by iis acute, falcate, and more numerous pinnules. Formation and locality: Tertiary (Miocene?). Currant Creek, Oregon. V, AspiDiUM Kennerlyi Newb. , '-:'■. -"-■':,:,,':--,. PI. XVI, figs. 4:, 5. '■■::-'■■■:,-'--.., Boston Journ. Nat. Hist., Vol. VII (186;i), p. 613. "P'rond pinnate; pinntB deeply pinnatifid; pinnules oblong, obtuse, somewhat curved upward, tniited at their bases, margins acutely denticu- late, sometimes entire; nervation strongly marked, secondary nerves mostly once-forked, basal nerve of each pinnule on the lower side often twice- forked." This elegant species seems to have grown in the greatest abundance during the period of the dei)osition of the coal of Vancouvers Island, the shales over the Newcastle coal being so closely packed with its fronds Ls to show them crossing each other in every direction under every lamina that is raised. From their very abundance and consequent interference it is 12 THE LATER EXTINCT FLORAS OF NORTH AMERICA. i :i' 'iii M impossible to obtain the entire outline of a frond, or even of a pinna; the frond nuist, however, have been of considerable size, and the pinnaj 8 or 10 inches in length. These last are linear in outline. Home of them some- what curved, others (juite straight, the difference being doubtless due to their ditt'erent positions in the frond. The pinnules are xisually an^hed upward, very bnnid at the base, I'ounded or obtusely pointed at the summit. Where well preserved, the margins of the larger ones are seen to be finely but distinctly denticulate. The nervation is quite strong, but the frond was evidently thick and firm, and though very prominent on the under side, on the upper the nerves are scarcely visible. The midrib is sliglitly sinuous, and vanishes toward the summit of the pinnule. The secondary nerves are generally once-forked, but the upper ones are simple, and the lower one on the lower side is often twice-forked, or rather two once-forked nei-ves spring from the same base. Among fossil species this may be compared with A. FUix antiqiin, Al, Br. (Heer, Fl. Tert. Helv. Vol. I, p. 35, PI. XI, fig. 1), but though crenulated the pinnules in that species are not denticulate, and they are not curved. The nerves are also less strong and more simple than in our plant. Formation and locality: Cretaceous (Puget Sound group). Nanaimo, Vancouver Island. Pecopteris (Cheilanthes) sepulta Newb PI. LXII, figs. 5, 5a, 6. Pecopteris {Phegopteris) sepuUa Newb. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 503. ; ' "Frond small, delicate, pinnate; lower pinna? straight, broadly linear in outline, rounded above, attached to rachis by the whole breadth of base; margins strongly lobed by the cf influent pinnules; 1 centimeter wide by 5 centimeters long; upper jiinnules crowded, conical in outline, gently curved upward. Avith waved or lobate margins; pinnules united by one-third of their lengtli, oblong, obtuse; basal ones on lower side round, on the upper side flabellate, both attached by all their lower mai'gin to the rachis of the frond; nervation strong and wavy, consisting of one many-branched nerve- stem in each pinnule, each branch once or twice forked; fmctification unknown." . M DESCRIPTIONS OF SPECIES, 18 This elegant fern is apparently distinct from any species hitherto described. In general aspect it is not unlike Pccopteris TorelU Heer (Fl. Foss. Arct., Vol. I, p 88, PI. I, figs. ir)a, 151)), but in that speitiea the pinnules are longer, more oblicpie, more acute, and the nervation more open. It also has some resemblance to Cheilanthes Laharpii Heer (Fl. Tert. Helv. Vol. I, p. 37, PI. X, figs. 3a, 3b). That species is, however, more delicate, the piniife moi-e widely separated, the pinnules to a less degree united, the V)a8ilar pair simihir to the higher ones, the nervation more open. The upper portion of the frond of this fern, where the pinme are not distinctly lobed, but simply undulate, bears a strong resend^lance to that figured and described in Gardner and Ettingshausen's British Eocene Flora, Part II, p. 43, PI. VI and PI. X, figs. 2-4, under the name of Gleichenia Uantonensis (Wanklyn), but the secondary nerves are fewer and given off at a more acute angle. I'he middle portion of the frond of our plant is, however, conspicu- ously different, since the pinnae are deeply lobed, forming distiiict and l)eculiar pinnules at the base instead of being confluent as in G. Hnntoiicnsis. It seems to be probable, however, that both ferns belong to the same genus. What this genus should be called must remain a matter of doubt until specimens shall be obtained in which the fructification is shown. Without better evidence than we yet possess, the reference of our plant to Gleichenia seems to be unwarranted. The general form of the frond and the nervation are more like those of some species of Cheilanthes than of any other living ferns with which this has been compared; but it will be necessary to have the fructification before the identification with that genus can be regarded as established. It has been thought better, therefore, to i)lace it in the convenient receptacle afforded by the fossil genus Pecopteris, with a suggestion of its probable afiiuities in the living flora of the world. The figures given represent, 5, the middle portion of the frond; 6, the upper part, and 5a, the lower two pinnules 'at base of jjinna on the under side enlarged. They were collected by Dr. C. A. White, from the Green River shales. Formation and locality: Tertiary (Green River group). Green River, Wyoming. 14 THE LATER EXTINCT FLORAS OF NORTH AMERICA. I '^. ■■.!;> i>ii':!t Sphenopteri8 cokkugata Newb. . ' ' PI. I, fig. (i. ' '*' Ann. N. Y. Lyo. Nat. Hist., Vol. IX (April, 18(58), p. 10; Ills. Crot. and Tort. PI. (1H7K), Pi. II, lif,'. 0. HyDienophijIluiti crehweiim Lesq. Ilaydon's Ann. Ropt., 1872 [1873], p. -121; Cret. Fl. (18Wg, p. 45, I'l. XXIX, fig. 6 [excl. Pi. I, ligs. 3, 4]. " Form of frond uiikiiovvu; pinnules ovate or cuneiform, narrowed at the base, obtuse, lobed, often ))licated lonj^itudinally; nerves distinct, dichotomously branching from the ba«e. "The specimens of this fo.ssil collected b\^ Dr. Hayden are fragmen- taiy and imperfect, but quite sufficient to show it to be different from any described species." Since the above was written Lesquereux has published in his Cre- taceous Flora descriptions of a fern from the Dakota sandstones, at Fort Harker, which he calls UifmonophyUHm eretaceum. Of this he gives several figures on PI. I, and another on PI. XXIX. Of these the latter certainly represents our species, which is easily recognized by the wedge-shaped subdivisions and the plicate or corrugated surtace; but the specimens figured on PL I belong to a different species, of which the frond was membranous and the rachis winged, and which approached much nearer to the living Hymenophyllum. Formation and locality: Cretaceous (Dakota gi'oup). Blackbird Hill, Nebraska. Order EQUISETACE.ffi. . ' Equisetum Oregonense Newb. ' Pi. LXV, fig. 7. ' ■ V;: Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 503. " Stem robust, 3 centimeters wide, longitudinal flutings numerous, about 24 in a half circumference; joints 5 centimeters distant; teeth trian- gular, short." r : ,,;vi' ■ This species, collected by Rev. Thomas Condon, at Currant Creek, Oregon, is impertectly represented in the collection, but there is enough of it to show it to be distinct from any other fossil yet found. It exceeds iu magnitude any Tertiary species hitherto described in this country, and fiir DESCRIPTIONS OF SPECIES. 15 I m approaches more nearly to the hirj,'er forms of the Mesozoic rocks. It may be coinpared with A', rohitstum Newh., this volume, page 15, PI. XVI, figs. 1. 2. but the stem is l)roa«lor, the flutiujfs (h)uble the number, and the teeth much shorter and blimter tlian in that species. E. ptoccrum lleer (Fl. ^iVrt. Ilelv. Vol. Ill, p. ir.8, PI. CXLVI, fig. 1), from Locle, Switzer- land, is larger, but ditlers widely from it by its coarser fluting, hmg and furrowed teeth. FonuuUoH and localiti/: Tertiary (Miocene?). Currant Creek, Oregon. Equihktum RoitusTUM Newb. PI. XVI, figs. 1, 2. Boston Journ. Nat. Hist., Vol. VII (1803), p. 513. > ' " Stem robust, 8 lines wide, with about 24 strongly marked furrows; sheaths long; teeth long-pointed, acute, as many as the fun-ows; inteniodea a little longer than the tliameter of the stem." There is no living species of Equisetum which attains the size of the fossil before us, though it does not rival in this respect those found in the older Mesozoic rocks. Between the living and older exiinct species it seems to form a comiecting link, a stepping-stone by which the Calamitea of ^he coal period and the gigantic Equiseta of the Trias have come down to the humble dimensions of their present representatives. There is no described Tertiary species with which it will be likely to be confounded. E. procermi Heer (FI. Tert. Helv. Vol. Ill, p. 168, PI. CXLVI, fig. 1), is even larger, but will at once be distinguished from it by its smoother stem and far more numerous and less acute teeth. Formation and localiti/: Cretaceous (Puget Sound group). Belling- ham Bay, Washington. Equisetum Wyomingense Lesq. > v/- ■ PI. LXV, flg. 8. Hayden's Ann. Kept., 1873 [1874], p. 409; Tert. Fl. (1878), p. 69, PI. VI, flgs. 8-11. Formation and locality: Tertiary (Green River group). Green River Wyoming. ' N0TE.-S0 identified by Dr. Newberry, as indicated by n.emorandum on plate and label on specimen, but further information lacking.— A. H. 1(> TlIK LATKU KXTINCrr FLORAS OF NOKTII AMERICA. Kquisktum hj).? Nowb. PI. XXII, figs. :), 4. Fig. 3. "Radiclo tuborH of KiiuiHotuiii (not (lo8(;ril)e(l)." Ills. Cret. and Tort. PI. (187H), PI. VII, llj?. 4. Fig. 1. " Root of some ligneous plant (not descrihwl)." Ills. Cret. and Tort. PI. (1878). PI. Vn, lig. :i. NoTK. — 'riio only iniuiiiscript by I'rofoHsor Newborry which I have boon able to find in a ponciled luoinoraiuliini on tlu> plato reforring thuHO to EqulButuin, viz: Fig. 13. "TuboroHH rootn of E(|uisotuni «p.?" Fig. 4. "A(iuati<; rootlots of K(iuis(>tnni sp.?" Fig. ;J certainly ropresonts A'. (jlohiiloNum Lesq., Proc. U. S. Nat. Muh., Vol. V (SopliMiibcr i".t, 1882), p. 444, PI. VI, ligH. 1, 2; Crot. and Tort. Fl. (1883), p. 222, PI. XIA'lII, lig. 3; but there Ih no indication that Dr. Newberry intended so to refer it. — A. II. p»n^Nii:RoaAMi^. GYMNOSPERM^. Order CYCADACE/E. NiLssoNiA GiHBsii (Newb.) Hollick. PL XV, figs. 2, 2a. T(eniopteris Gibbsii Newb., Boston .lourn. Nat. Hist., Vol. VII (1803), p. 612. Nilssonia Johnstrupi Heer, Fl. Foss. Arct., Vol. VI, Abth. II (1882), p. 44, PL VI, figs. 1-C. "Frond simple, petiobite, oblong', elliptical in outline, rounded at base and summit; margins entire, midrib strong-, straight, smooti; lateral nerves leaving the midrib nearly at a right angle, simple, tine, parallel, numerous." The above description was based on a single specimen collected by Mr. George Gibbs from the Cretaceous strata on Orcas Island, Washington, in 185H. From the character of the nervation and the entire margins it was supposed to be a fern, but Professor Heer has since obtained a immber of specimens of the same plant from the Upper Cretaceous strata of Greenland, which seem to prove that it is the leaf of a cycad. (Fl. Foss. Arct., VI, Abth. II (1882), p. 44, PI. VI, figs. 1-G.) He has named his plant Nilssonia Johnstrupi, but the specific name given by me has priority. mm Wiiii!;; DESCRIPTIONS OF SPECIES. n Tt Ih fnr more intereHtiiifj- to identify a i»Iaiit from Orcaw iHland with one found in the Cretaceous strata of CJreenhuul than to find it to be a new ;;enu8 or species, as it hel])s us to estaldish a ficoloj^ical paraHelism, and shows the wide diffusion of some species thronjiii tiieC'refaceoii.s strata. liy this phmt and a few others tlie Vancouver and'Orcas Ishmd beds are connected with those of Atane, Greenland, and many common species con-ehite the Atane beds with the Amboy Clays of New Jersey. Formation and localiUj: Cretaceous (Pugot Sound group). Point Doughty, Orcas Island, Washington. Order CONIFERiE. AbaUCARIA 8PATULATA Nowb. PI. I, Figs 6, 5a. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 10; Ills. Cret. and Tert. PI. (1878) PI. II, fljfs. 5, 5a. "The only specimen of this beautiful species contained in the collec- tions of Dr. Hayden is a fragment of a branch, nearly Inilf an inch in diameter. On this the leaves are thickly set, their bases slightly decuiTdut, being scarcely separated from each other. From these bases the leaves radiate in all directions, and are slightly recurved. They are half an inch in length, broadly spatulate, obtuse, and nan-owed at the base. Along the medial line pat • 3S a distinct carina, which vanishes toward the apex." From all living or fossil species, this seems very clearly distinguished by the form of the leaves. Two species of Araucarites have'been described from the Cretaceous formation, of which descriptions are before me: A. acutifolius Endl. and A. crassifolius Eudl. (Synops. Conif., pp. 3ul, 302), neither of which has spatulate leaves. There is little doubt that this was a true Araucaria, and not very unlike, in its general aspects, some species now living. It is also probable that these trees foi-med extensive forests on the land during the Cretaceous period, as I have found these strata in some local- ities in the West literally filled with large trunks of coniferous trees, many MON XXXV 2 •' ,Ji ..f 18 TJ'E LATER EXTINCT FLORAS OF NoltTII AMERICA. of which liavo mthcsr tho Htructuro of Amiuriiriu than of IMiuih, AbioH, or .FnnipcniH, iilthou;;!! nil thoso fycncra wero reprcHimtud at tliat epoch. Fortmtioii and /ocalitf/: CrotacoouH (Dakota group). Sago Crock, Nebrunku. AniETITES CHETACKA Nowb, 11. sp. PI. XIV, flK. fi. Note. — The only manuscript by Dr. Newberry in regard to this flgnre is on the hilx'l allatilit'd to tlie HiMUiinien. Tlie following dusoriptiou lias been prepared from ar. examination of the specimen: l$ranclilot slender; leaves one-half inch long, crowded, short petiolate, nar- rowly ovate-lanceolate, attenuate at both ends. — A. II. Formation and loralitif: Cretaceous (Dakota group). Whetstone Creek, Santa Fe trail, northeastern New Mexico. Sequoia cuneata Newb.* PI. XIV, figs. 3-4a. Taxodium cnheaktm Newb. Boston .lourn. Nat. Hist., Vol. VII (186,S), p. 517. "Leaves numerous, short, broad, spatulate in forni, rounder or sub- acute at summit, wedge-shaped below, uaiTowed into a very short petiole, or sessile upon the branchlets." ' - - The specimens of this plant contained in the collection, though numerous, are too imperfect for satisfactory description. If found in strata of the same age, it might be considerc'l but a variety of Taxodiuin; but if we can trust the accuracy of the very in !^^elligeut gentleman by whom it was collected, it is clearly of Cretaceous i^ry, and therefore, in all probability, quite distinct from any described spetS-s. < < ;; :' i\ The spatulate or cuneate form of the leaves, if this should be found to be a constant character, would serve to distinguish it at a glance from its Tertiary representatives. Formafion and locality: Cretaceous (Puget Sound group). Nanaimo, Vancouver Island. 1 'This speciea was transferred by Dr. Newberry from Tazodinm to Seqnoia in his mann- script. — A. H. DESCRIPTIONS OF SPECIES. ly BEgi'ou (JKACILLIMA (LeHq.) Newb. PI. XIV, 11k. (i; XXVI, IlK. !». ? OliJlitoHtrohiwi (jntfiUhnm L('8<(. iViii. Jourti. Sci., \'<)l. XL VI (July, 18(18). p. 92; Crot. Fl. (1874), p. .W, PI. I, tigH. 8, U-llf. "Cono of Seqiuna (not described)." IUh. Cret. and Tert. PI. (1878), PI. XI, rtg. 9. Lcsqueroux descrihed (loc. cit.) a conifer wliich occurs tVe(|iU!iitly in the Dakota group in NelmiHka, iiiul also in the Creta(!eoUH strata of New Jeruey. It is cliaracterized by a great number of slender, almost filiform, branches covered with acute lanceolate or ovate, sometimes subulate, U*aves. Lesquereux speaks of their occurring in whorls of three, but in thc^ large number of specimens before nw I can find no evidence of a verticillafe arrangement, and they seem to surround the stems spirally. They differ considerably in length, but the foliage can hardly be said to be dimorphous as in Gly{)to8trobus, Se(iuoia, and many other conifers, but usually on the older branches they are more closely appressed, more sjjreading above. Lesquereux conqjares this plant with Frenela oi" Australia, and suggests that it may be identical with Ettingahausen's FreneUtes Mcichii, from the chalk of Niederschcena. It has b ^en my good fortune to obtain a nundjer of cones of this plant, both from Nebraska and New Jersey, and I am able, therefore, to give a more complete description of it than has been heretofore possible. The cones are cylindrical, 2 to 2^ inches in length, one- half inch in diameter, and are formed of relatively large peltate si^ales, each with an innbilicus and central tubercle. [See PI. XXVI, fig. 9. ?] This is a tot.dly difierent cone from that of Glyptostrobus, in which the divisions are squamiform with a fanlike, crenulated margin. The form of scale in the cones before us is similar to that of Sequoia and Taxodium, but the cones of the latter are usually globular, while those of Sequoia are often elongated, sometimes subcylindrical. The character of the foilage is near to that of some of the Sequoias, S gifjantea and S. Couttsm, for example, while in Glyp- tostrobus the two forms of foliage are much more distinctly marked, the short appressed leaves closely investing the branches, resembling those before us, tlie open foliage quite different. The foliage of this plant is found in considerable abundance in the sandy layers of the Cretaceous on the Raritan River, and the cones were formerly numerous in the clay beds at Keyport, where they were associated with great quantities of lignite, very 20 THE LATKH FATINCT KU)RAS OF NORTH AMERICA. ■ml m m probably produced by the to'ees on which they were borne. In some cases the cones were repkcod by pyrites, and these represent the ori^riiml form and ninrkinp:s very perfectly, but retpiire to be kept in alcohol or naphtha to prevent oxichition. 'riu-y will be tbund in my memoir on the Flora of the Amboy Clays, Fonnation and lorolUi/: Cretaceous (Dakota group). Wlietstone Creek, New Mevico. (Kxdudinjj fig. !>.) yrii.. — In the tUsciission of this species Dr Nowhorry inoiitions having obtained oones from NohrasI ipu'stioned by nit'. — A. H. Sequoia Heerii Lesq. PI. XLVII, tig. 7. Haydr-n'8 Ann. Kept., 1871 [1872], p. •-'!)(); Tert. Fl. (1878), p. 77, PI. VII, flgs. 11-13. Formation avd locaUUj: Tertiary (Miocene). Bridge Creek, Oregon Note. — The only reference by Dr. Newberry to this ligmc wliioh I liavo been al^le to find i.s a pencil nianioranduni of the name, on the plate, anil the specimen label giving the locality. — A. II. Sequoia NtmDENSKiOLuii Heerf. PI. XXVI, fig. 4. Fl. Foss. Arct., Vol. IT(]Miocent> Fl. n. Fan. Spitzbergons, 1870), p. 36, PI. II, flg. 13b; IV. tigs, la, lb, and 4-38. TiurUes LaiKjxdarfti Hrong. ? Prod. (1828), p. 108. Sequoia Liv:rfii (Hrong.) Ileer. Fl. Tert. Helv., Vol. I (1865), p. 54, PI. XX, t-g. 2; XXI, (Ig. 4. ^'Sequoia Ldnysdorjii ? Br." Ntnvborry, Ann. N. V. Lye. Nat. Hist., Vol. IX (April, 1868), p. 46; Ills. Cret. and Tort. PI. (1878), PI. XI, tig. 4. The leaves here figured are part of a large nund»er of the same species collected by Dr. Ilayden on the banks of the Yelh»w8tone River. They are contained in fragments of a shaly argillaceous limestom>, which have their surfaces covered by disconnected twigs with their leaves attached, that present the appearance oi' having been thrown down together, precisely as the deciduous branchlets of tuu cypress are detaclunl by the frost. Among tiiese are a fev/ pieces of larger branches bearing short apj)ressed leaves, which I have conjei'tured to" be tlie permanent foliage of the tree. DESCRIITIONS OF SPECIES. m These brandies show at reffular intervals the former j)oint8 of attachment of (locidnous (?) hrauclilets, hut more of these are still in the-- jjlaces. Tliey may iiave been deatl twij^'s, some of which would naturally fall and aecumulate with the leaves. The leaf-l)eariii<;- hranchlets are simiile, a:id though lyin^j; tode at Green River, agreeing among them- selves in all essential particulars, enable us to clearly define the species and show its distinctness from any yet found on this continent. From Flahel- laria Eocenica it differs in having a larger number of folds and a longer point of support on the under side of the leaf From Sabal Camphelli Newb. m DESCRIPTIONS OF SPECIES. 31 it may be (listiiiffuislied by its Hinnllor size, less number of folds, and soino- vvliat slmrtor spike of the petiole. Snhal Grajiaiius Lesq., is larger, with nearly double the amount of rays and a keeled j)etiole. Sahal ipnndifolin Nevvb. is much larger and like S. (h-ai/ann.s has twic^e as many folds. These large Hjtecies may be distinguished from each other by the concavely pointed and keeled petiole of *S'. Grai/anm. In the figures given, that on PI. LXIII, fig. Ci, represents the under side of the leaf at its base, showing pointed spike formed by the ])rolongation of the petiole. PI. LXIV, fig. 1, represents the suiiunit of the petiole and base of the leaf oji the upper side. Here the rays are inserted on either side of a nearly symmetrical angle of the pcllole, but other specimens show- that the line of insertion of the rays is sometimes obliqueh- arched, preeiselv as in the figure of the base of the leaf of Sahal grandifolia, shown in fig. 2, PI. LXIV. Fig. la of the same plate represents two folds of the leaf of Sabul J'owelH, given of the natural size, to show the nervation. Formation and local iti/: Tertiary (Green River group). Green River Station, Wyoming. Manicaria Haydenii Newb. PI. LXIV, flg. 3. Proc. U. S. Nat. Mus., "Vol. V (March 21, 1883), p. 604. "Frond large, leaves pinnately plicated, folds IJ centimeters in width above, slightly narrowed below; flat or gently arched, smooth, springing fi-om the midrib at an angle of 25 degrees above, 30 degrees below (in the specimens figured); folds attached to the midrib obliquely by the entire width, and to ea(!h other by their entire length (?); nervation fine, unifonn (?), parallel." The specimen figured is only a small portion of an entire leaf, and is inadequate to supply material for a satisfactory description. It is, however, evidently the central portion of a palm leaf of which the general form was elongated and the length i)robably many times the breadth. It was com- posed of a large number of pinnate, united, flattened folds, divergent from the midrib at an acute angle. These folds were not keeled like those of Flabellaria and Sabal, but either plain or gently arched; whether they were imited throughout their entire length or were free toward the margin of the leaf is not certainly known, as we have nowhere seen the entire breadth of 32 THE LATEU EXTINCT KLOKAS OF NOIC il AMEUlC'A. tlio Umf; Imt it ik iiroltal)!*) tlmt they wore joined to tlie iniirjrin. Until more coinplote M|)(*ciiiu>iis of tiuH plant hIihII be obtained notliin<^ jumitive can bo Haid of itw rttlationH to livin;^' palniH; l)iit it \h evidently allitul to Heer'H Manirnria formom (FI. 'Pert. Holv. I, j). 1)2, PI. XXXVIII), and to the liviuf^ Manicaria of Soutli Ainericu. It certainly aJHo belouffs to the Hanie genuH with Lr'squorenx's palm leaAos which he Iuih grouped under the now {generic name of (}eonomit(!s, l)ut it has seemed to the writer more cloHoly iillied to Mannicaria than CJcnmoma. its Hpecitic rolutious are also somewhat doubtful. It moHt roHombleH (rconomites tcnuirachis Losq. (Tort. Fl, p. 117, PI. XI, fiff. 1), but in the figured Hpecimon of that jdant the folds of the leaf spring from the midrib at a much more acute angle than in the speiiimeu before us. This ditforence could be reconciled if it wore certain that Lescpiereux's s])ecimens came from near the sunnnit of the leaf, where the folds generally approach the direction of the midi'ib. Dr. Haydon reports the specimen to which the name of Oeonomites tenuirachis was given as coming from the Raton Mountains anil from strata which are older than that which furnishes the specimen now described. 8o far as now known there are v., species common to the Raton Mmuitain beds an( the Green River Tertiary. There is a strong probability, therefore, tha the differences indicated have specific value. Formation and locality: Tertiary (Green River group). Green River Station, Wyoming. Order SMILACEiC. Smilax cyclophylla Nowb. PI. LIV, flg. 3, in part. Boston Journ. Nat. Hist., Vol. VII (1863), p. 620. "Leaves circular or round, ov^ate, cordate or slightly peltate at base, five-nerved, central and interior pair of lateral nerves strongly marked, basilar pair delicate and scarcely reaching the middle of the leaf; second- ary nervation forming a polygonal network more or less rectangular." Unfortunately, the only specimen of this plant which I have — that collected by P.'ofessor Dana and figured in his Geology of the United States Explorinj^ Expedition, Atlas, PI. XXI, fig. 10 — is imperfect, the upper part of the Itsaf being wanting. So far as its outline is indicated by the part which remains, it would seem to have been nearly orbicular. If "•m^ 1^" m I)KS(miPTIONS OP 8PEC1E8. 33 Huch WHH the case, it renombled in gen(?ral aspect the leaves of S. orhkii- laris IToer (Fl. Tert. llelv., Vol. Ill, j). liil, PI. CXLVII, figs. 18, ID), and perhaps as much thosit of the living .V. rotundifolia. Fntm S. oiliirulnris it dirtcrs, liowcvcr, in the shortness of the exterior |)air of lateral nerves and in the |)olyffonaI roticulation (»f the secondary nervation. Formation ami locality: Tertiary (Eocene?). Hirch Bay, Washinj,'ton. Order IRIDACEiK. Iris ap.? Newb. PI. XXII, fig. (!. Ills. Cret. and Tert. PI. (1878), PI. VII, fig. (!. Note.— The (mly mamiscript relating to tliis specimen whicli I have been able to find is the al)ove designation, in pencil, on the margin of the plate. J.ooality not known. — A. II. MONOCOTYLEDON OF UNCERTAIN AFFINITIES. Monocotyledon gen. et sp.? Hollick. PI. XLVI, fig. i); Note.— This flgnro apparently represents the lower portion of a leaf of some monocotyledon, bnt neither the specimen nor any manuscript referring to it was found except a memorandum of tl»e locality on the plate nuirgin, and there is no indication of Dr. Newberry's ideas concerning its affinities.— A. II. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. DICOTYLEDONEvE. Order JUGLANDACEyE. JUGLANS NIGELLA Heer. PI. LI, flgs. 2 (in part), 4. /l;. Fl. Fobs. Arct., Vol. II, Abth., II (1869), p. 38, PI. IX, figs. 2-4. NOTE._So identified by Dr. Newberry, as indicated by memorandum on margin of plate.— A. H. Formation and locality: Tertiary (Miocene). Admii-alty Inlet, Alaska. MON XXXV 3 34 THE LATER EXTINCT FLORAS OF NORTH AMERICA. JUOLANS OCCIDENTALIS Newb. i^l., .' PI. LXV, fig. 1; LXVI, figs. l-4c. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 507. "Leaves somewhat variable in form and size, from 3 to 8 inches in len<^th and 1 to 2 inches In width, but generally 6 inches long by 1 ^ inches wide, broad-lanceolate in outline, widest in the middle, summit acute, base rounded, often unsynnnetrical ; margins entire; nervation delicate; midrib straight; lateral nerves, about twenty on each side, gently curved upward the lower ones branched and anastomosing near their extremities, the upper sim|)le and teriuinating in the margins; tertiary- nervation very delicate, or obscire from being buried in the ))arenchyma of the leaf, forming an open and irregular network. Fruit small, elongated, somewhat prismatic; divi- sions of the envelope lenticular in outline, narrow, thin." The figures given of this species, collected by Dr. C. A. White, illustrate very well the average size and form of the leaves. The number contained in the collection is large, and they seem to have been extremely abundant in the locality where they were obtained. In a few instances they are found attached to the stems that bore them, but are generally sei)arated and more or less torn and broken. The tree was evidently a strong-growing and luxuriant one, f.)r some of the leaves are not less than 8 inches in length; the nervation is fine and often not discernible, probably from the thickness of the leaf; in some specimens, however, it is more distinct and has all the char- acters of that of the genus to which the leaves have been referred. The fruit, of which fortunately one specimen was found in immediate contact with the leaves, is small, marked with raised lines, elongate in fi'vni, and resembles more the fruit of Carya nlhuJi'jniiis than any other of our living species. It might be infeired from the small size of the luit and its elongated form that it was immature, but near it lies a segment of the envelope which has appa- rently exfoliated at maturity. As only one specimen of tlie fruit has been discovered, it is possible that it does not represent the average size and form. This fiixit is distinctly that of a Carya and not of a Juglans, as now defined, but the leaf is more like that of the latter than the former genus. It dis- tinctly falls within the old genus Juglans, but can hardly be reduced to either of its subdivisions which have now been given generic value. A species of Juglans collected near the same locality as tint! has been DESCRIPTIONS OF SPECIES. 35 described by LeHqu3reux under the name of J. Schimperi, but his descrip- tion and figures indicate a plant different from this one. He describes the leaves of liis species as being broadest near the base, long and nan-ow, having a nervation that differs from that of the leaves before us; the lateral nerves being camptodrome — tliat is, uniting in festoons along the borders and the tertiary nervation forming rectangular areoles — while in our species a large part of i\e lateral nerves terminate in the margins and the tertiary nervation is more open and irregular. Fonnation and locaUty : Tertiary (Green River group). Green River, Wyoming. Carya antiquorum Newb. PI. XXXI, figs. 1-4. Anu. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 72; Ills. Cret. and Tert. PI. (1878), PI. XXIII, figs. 1-4. "Leaves pinnate, large, leaflets lanceolate, long-pointed, acute, sessile, finely serrate, middle leaflet broadly lanceolate, widest above the middle, narrowed to the base, which is somewhat unequal; lateral leaflets narrow, lanceolate, unsymmetrical throughout, somewhat falcate; nervation sharply defined, conspicuously parallel, medial nerve straight in the tenninal leaf- lets, morc! or less curved in the lateral ones; secondary nerves springing from the midrib at a large angle, numerous, subparallel, all arched upward, their extremities prolonged parallel with the margins of the leaf; the upper ones strongly arched, but terminating more directly in the margins; tertiary nerves distinct, mostly simple, straight, and parallel among themselves, con- necting adjacent secondary nerves nearly at right angles." . The form, sen-ation, and nervation of these leaves are entirely those of Carya, and while without the fruit it may not be possible to fix their place in the series more definitely than to say that they represent the genus Juglans as formerly constituted, including Carya, we may at least refer them with confidence to a place within the limits of that genus. The leaves of the species of Carya and Juglans are very similar, so much so that some of the Caryas, such as C. olivfsfornm, have leaves that could in the fossil state hardly be distinguished from those of Juglans. , The specimens before us, however, seem to me to be more widely 36 THE LATER EXTINCT FLORAS OF NORTH AMERICA. '«H separated from those of the known species of Juglans than are those of the Pecan, and there seems little doubt that the tree, if now living, would fall within the limits of Carya. In some specimens the lateral nerves are remai'kably straight and numerous, giving to the leaf very much the aspect of those of ^sculus; but, from a comparison of the many leaves of this plant in the collection of Dr. Hayden, I infer that they were not palmately grouped, but pinnate, the form of the bases of the leaves indicating this. Thv tertiary nervation is also quite different from that of ^sculus. In the latter genus it usually forms an exceedingly fine network filling the interspaces between the secondary nerves, in which the straight transverse latticelike bars so characteristic of the fossils before us are wanting. At lefist this is the case with our American "Buckeyes." In ^. Hippocastanum of the Old World something of the kind is visible, but in prevalence and regularity very unlike that in the fossil. In has been questioned whether these leaves should be referred to Juglans or Carya, and after somewhat extensive comiiarisons I was led to include them in the latter genus. In looking over the descriptions that have been given of various fossil species of Juglans we find that quite a large number of them should be rather reckoned as pertaining to Carya, taking the fruit as a criterion. For example, in the /. corrugata of Ludwig (Palseontogr., Vol. VIII, p. 178, PI. LXX) the form and the nervation of the leaf is very much like this before us, only the nervation is a little less regular and the marginal seiration is coai'ser. The fruit associated with these leaves is more nearly allied to that of our ./. nigra than it is to the fruit of the common species of Carya, whereas in the illustrations of J. levi- gata, Brong., given by Ludwig (Pala-ontogr.. Vol. VIII, p. 134, PI. LIV, figs. 1-6), we have leaves which conespond in a general way with these, as far as vorm and marginal serration are concerned; nervation exceedingly regular, but more camptodrome, and the fruit distinctly that of Carya It will be necessary to wait the discovery of the fruits which were connected with these strongly marked leaves, an event which will be likely to occur at no distant date, before deciding to which subdivision of the old genus Juglans it belongs. Formation and locality: Tertiary (Eocene?). Mouth of Yellowstone River, Montana. ■ ^^ . DESCRIPTIONS OF SPECIES. . .; 37 Order MYRICACE^. • Mykica (?) TRiFOLiATA Newb. n. sp. PI. XIV, ftg. 2. Leaves in threes, lance-linear in outline, acute at summit and base; mai'gins remotely and coarsely marked with appressod teeth: nervation delicate. These are leaves which are manifestly distinct from any others from the Dakota sandstones yet described, and are referred to Myrica with doubt, as nothing but the general resemblance of form and marginal serration can be cited as proof of affinity. In due time, however, more material illustrating the species will be discovered, and, we may hope, also the fruit. At present it stands simply as a positive addition to the list of arborescent plants hitherto found in the Dakota group, but one of which the botanical relations must be determined by future observations. Formation and hcality : Cretaceous (Dakota group). Whetstone Creek, northeastern New Mexico. Order SALICACEiE. POPULUS ACEEIFOLIA Newb. PI. XXVIII, nr<. 5-8. Ann. N.Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 65; Ills. Cret. and Tert. PI. (1878) PI. XIII, figs. 5-8. " "Leaves long-petioled, broad-ovate in outline, often somewhat three- lobed, obtuse, slightly cordate at base, margins coarsely and unequally crenate; nervation radiate, strong; medial nerve straight, giving off one pair of lateral nerves near the center of the leaf, and above these about three smaller ones on each side. From the base of the midrib ^^pring two pairs of lateral nerves on each side. Of these the lower and smaller i)air diverge at an angle of (50 degrees to 70 degrees with the midrib, are nearly straight, give off numerous sliort branches on the lower side, and tei-minate in the lateral margin below the middle. The second and larger pair of laterals diverge from the midrib at an angle of about 35 degrees to 45 degrees, are straight or slightly curved upward, terminating in the margins ;,^ '1 4^" 38 THE LATER EXTINCT FLORAS OF NORTH AMERICA. above the middle, or in the lobes, when lobes are developed; from these spring three or four branches on the outside, which, simple or branching, terminate in the scallops of the border. The tertifuy nervation, shown very distuictly in some of the specimens, forms a network similar to that of the leaves of living species of Populus, of which the areolae exliibit con- siderable diversity of form and size, being polygonal, with a roundish outline, or quadrangular." Collected by Dr. F. V. Hayden. The general aspect of these leaves is much like that of some of the living maples, but they are less distinctly trilobate. The creuation of the margin is coarse, iiregular, and obtuse or rounded, as is usually the case with the leaves of a group of poplars, the leaves of which in other respects most resemble these. The surface is, in many specimens, some- what roughened, as though in the living leaf it was canescent; also a com- mon character among poplars, but rare or unknown among maples. The leaves of the maples are generally thin, and the network of tlie tertiar^' nerves is remai'kably fine and uu'form affording a reliable generic charac- ter. This is visible in the leaves of all the recent maples, and is beau- tifully shown in the impressions of the leaves of A. psemfophtanus, gi\'en in Ettingshausen and Pokoniy's Physiotypia Plant. Austria, PI. XVII, fig. 10. Among fossil species this perhaps resembles most P. leucophi/Jla (Foss. Flor. V. Gleichenberg, Denkschrift, k. k. Acad. Wien., Vol. VII (1854), p. 177, PI. IV, figs. 6-9), but is much more distinctly crenate-toothed on the margin. The teeth of P. leucophylla are either obsolete or remote and acute, making a sinuate-dentate margin. Formation and locality: Tertiary (Fort Union group). Fort Union, Dakota. Populus cokdata Newb. PI. XXIX, fig. G. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 60; Ills. Cret. and Tert. PI. (1878), PI. XIV, fig. 6. "Leaves orbicular or round heart-shaped, deeply cordate at the base; margins strongly toothed, except the inner border of the lobes of the base; DESCRIPTIONS OF SPECIES. 39 nervation radiate; medial nerve straight, simple below, branched near the summit; lateral nerves, three pairs diverginfj^ at nearly eijual angles, from a common point of origin; lower lateral nerves small, sim))le, arched upward at their summits, terminating in the margins; second pair of lateral nerves springing from the basal point of radiation nearly at right angles with tlie midrib, arching upward as they approach the lateral margins, and sup])oi*t- ing each about three branches on the inner side; third pair of lateral nerves diverging from the midrib at its base at an angle of about 45 degrees, bearing one or two lateral branches, and tenniuating in the margin above the middle of the leaf" Of this neat species there are no complete specimens in the collection made by Dr. Hayden, none of them showi'ig the summit of the leaf. Enough is, however, discernible in them to show that they represent a species of Populus different from any other in the collection and from any before described. Of the species at present growing on the North Ameri- can continent the leaves of P. heterophijlla approach most nearly to these, but the nervation of the leaves of that tree is never so distinctly radiate. In the character of its marginal dentations this species resembles P. mutabiUs crenata Heer, but is clearly distinguished from that by its cordate base and corresponding radiate venation. Popuh(s Zaddachi Heer (Fl. Tert. Helv., Vol. Ill, p. 307) has a still closer resemblance to this than either of the species mentioned, and it has been regarded by Lesquereux as identical with it, but in all the figures of that species published the dentation of the margin is less strong and acute and the nervation is less radiate. In P. cordata the basilar pair of lateral nerves reaches the margins below the middle of the leaf, and the second pair of lateral nerves spring from nearly the same point, while in /*. Zaddachi the basilai- i)air reach the margin above the middle and the second pair leave the midrib considerably above the origin of the basilars. The leaf figured by Professor Heer (Fl. Foss. Alaskana: Fl. Foss. Arct, Vol. II, Abth. II, PI. II, fig. 5), has the character ( f tiie fossil before us and would seem to represent the same species. Yet notwithstanding the differ- ences already pointed out, this is referred by Professor Heer to P. Zaddachi. The nervation is, however, so different from that of the typical forms of that 40 THE LATER EXTINCT FLORAS OF NORTH AMERICA. species that I am compelled to regard them as distinct till proof is furnished to the contrary. Formation and locality: Tertiary (Eocene?). Banks of Yellowstone River, Montana. PoPULUs (?) coKDiFOLiA Newb. PI. Ill, fig. 7 ; V, fig. 5. Ann. N.Y. Lye. Nat. Hi8t.,Vol. IX (April, 1868), p. 18; Ills. Cret. and Tert. PI. (1878), PI. V, fig. 5. "Leaves heart-shaped, slightly decurrent on the petiole; margins entire; nerves fine but distinctly defined; medial nerve straight or slightly curved, running to the margin; lateral nerves, six on each side, given oft" at an angle of about 50 degrees, nearly parallel among themselves, straight near the base of the leaf, slightly curved toward the sunnnit; lower lateral nerves giving oft" on the lower side about four simple or once-forked, slightly curved branches, which terminate in the basilar margin; second pair of lateral nerves giving off about three similar branches on the lower side, which run to the lateral margins; third pair supporting about two, and fourth pair one branch on the lower side near the summit; tertiary nerves springing from the secondary nearly at right angles, slightly arched and running across nearly parallel to connect the adjacent secondary nerves." Collected by Dr. F. V. Hayden. In its general aspect this species closely resembles the preceding, but several 8})ecimens which I have before me agree in being less rounded and more heart-shaped, and the lateral nerves are more immerous and given off at a larger angle. In these leaves the basilar nerves reach the lateral margins below the middle, and their second branches, as a consequence, have more the aspect of some of the leaves of the Cupuliferae, such as Corylus. The latticelike airangement of the tertiary veins in this, as in the other sj)ecies of the group, is very characteristic of the Cupuliferas, though not strictly limited to them. If we could imagine a Corylus with rounded or broadly cordate leaves, of which the inargins were entire, we should have a very near approach to these ])lant8. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska. 3 DESCRIPTIONS OF SPECIES. 41 1X9 ! POPULUS CUNEATA Newb. , ; ; ■ - PI. XXVIII, figs. 2-4 ; XXIX, fig. 7. Ann. N. Y. Lye. Nat. Hist.,Vol. IX (April, 1868), p. 64 ; Ills. Cret. and Tert. T\. (1878), PI. XIII, figs. 2-4, under P. nervosa var. ; and PI. XIV, fig. 7, under P. Nehrascencis. "Leaves .small, obovate, somewhat wedge-shaped at the base, obtusely pointed at the summit, coarsely, obtusely, and irregularly dentate on the margins, three-veined, basilar nerves given off at an acute angle, terminating above the middle of the margin; secondary nerves few-forked, and often inosculating." This species is represented by numerous specimens in the collection made by Dr. Hayden. It will be seen to be distinctly separable from any of the species published with it, and the same may be said in regard to those published elsewhere. In general form it bears some resemblance to P. attenuata, Al. Braun (Heer, Fl. Tert. Helv., Vol. II, p. 15, PI. LVII, figs. 8-12, and PI. LVIII, figs. 1-4); also to some forms of P. miitabilis^, Heer; but the nervation is less crowded than in those species, and both are acuminate-pointed. An elongated form is shown on PI. XXIX, fig. 7. Formation and locality : Tertiary (Eocene ?). Banks of Yellowstone River, Montana. PopuLus cyclophylla Heer. PL III, figs. 3, 4; IV, fig. 1. Proc. Phila. Acad. Nat. Sci., 1858, p. 266. Lesq., Ills. Cret. and Tert. PI. (1878), PI. Ill, figs. 3, 4; PI. IV, fig. 1, under P. Utigiosa Heer. Popidites cyclophylla {Popiilns) Heer. Lesq., Am. .Tourn. Sci., Vol. XLVI (.Julv 1868), p. 93. PopulUes cyclophylla. (Heer)? Lesq., Cret. Fl. (1874), p. 59, PI. IV, flg. 5; PI XXIV fig- 4- .. The specimens upon which Heer founded his species are given on PI. Ill, and arc before me as I write. The smaller specimen represented by fig. 3 is characteristic and normal, except that it is not more than half the average size of the leaves of this species. Fig. 4 is but a fragment, and it is very doubtful whether it should be considered as belonging to /'. ci)do- phjlla. The leaf figured on PI. IV is about of the average size, and though incomplete, may be accepted as a fair representative of the species. Such leaves are not uncommon in tlio Dakota group at Fort Harker, and a - 42 THE LATER EXTINCT FLORAS OF NORTH AMERICA. •*h precisely similar one is figured by Lesquereux on PI. IV of his Cretaceous Flora. It is iiu)ro than doubtful whether any of these leaves belou}'' to a true Populus; tlie nervation is more distiiurtly and regularly pinnate than in any living species of the genus, and the probability is that we have here the relics of a genus of trees now extinct, but closely related to the poplars. Formation, and localitif: Cretaceous (Dakota group). Blackbird Hill, Nebraska, and Fort Marker, Kansas. PopiiLUs (f) Deueyana Ileer. PI. IV, fig. 3; V, flg. 7. Nouv. Mem. So, llelv. Soi. Nat., Vol. XXII (1860), p. 14; PI. I, fig. I. Juglans Debeijana (Populus?) Ileer, Lesq. Am. Jouru. ^'ci., V'ol. XLVI (Jixly, 1H68), p. lOL Juglans (V) Debeijana Ileer, Les.^. Cret. Fl. (1874), p. 110, PI. XXIH, figs. 1-6; Ills. Cret. and Tert. PI. (1878), PI. IV, fig. 3; V, fig. 7. A number of leaves in the collection made by Dr. Hayden are clearly identical with that refeiTed with doubt by Professor Heer to Populus from the generalities of its nervation, and impressions of what would seem to have been glands at the base <»n either side of the point of insei'tion of the petiole. In our specimens, however, there are no glandular impressions, and the dei^arture from the normal type of nervation in Populus noticed by Professor Heer is still more conspicuous. The strong pair of basilar nerves so characteristic of the poplars is entirely wanting, the inferior lateral nerves being small, and the stronger ones, which succeed them above, are not ojjposite. In view of the marked dei)arture whicli these leaves exhibit from the nervation and form of the t>'pical poplars. Professor Heer suggests that they may represent an extinct genus of the order Salicinete, but it seems to me their affinities are closer with the Magnoliacefi", and that it is oven probable that they represent a species of the genus Magnolia. Les(juereux has suggested that this leaf should be referred to Juglans, comparing it with J. latifolia Heer, from the Tertiary of Switzer- land; but a considerable number of specimens before nie fail to convince me of the justice of this reference, and yet they hardly suggest any other botani(^al relations. The leaves were evidently very thick and leathery, and the nervation is crowded and strong. It will be necessary that some ,1 DESCRIPTIONS OP SPECIES. 43 other parts of the plant shall be obtained before this question can be satisfactorily settled. Formation and localittj: Cretaceous (Dakota group). Blackbird Hill, Nebraska. PoPL'ZiUS ELLU'TiCA Newb. PI. Ill, fi{,'8. 1, 2. * Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 18G8), p. 10. Ficus ? rhomboideus Losq. Am. Journ. Sci., Vol. XLVI (July, 1808), p. 90; Ills. Crot. and Tert. PI. (1878), PI. Ill, flgs. 1, 2. PhyllUen rhomhoidem, Lesq. Cret. Fl. (1874), p. 112, PI. VI, flg. 8. "Leaves long-petioled, suborbicular or transversely elliptical, slightly cuneate at the base, and apiculate at summit; lower half of leaf entire; superior half, or more, very regularly and rather finely obtusely sen-ate, or crenate, Bie points of the teeth inclining u[)ward; primary nerves usually five, sometimes three, radiating from the base at equal angles; from these the secondary nerves spring at acute angles." This is an exceedingly neat and well-defined species, very fully repre- sented in Dr. Hayden's collections. It is symmetrical in form, bn.ader than high, forming a transverse ellipse, from the opposite sides of which rise the corresponding and equal projections of the apiculate suimnit and slifrhtly decurreut base. The crenation of the iqiper portion of the leaf is very regular and neat, the teeth of small size, and turned upward. The general aspect of the leaf is not very different from that of some specimens of the living P. tn-iindoides, but the entire margins at the lower half of the leaf, the more ellii)tical outline, shorter jjoint, and larger and more regular teeth, mark its specific differences with sufficient distinctness, while the corre- spondence which the leaves of the two species present in the general charac- ters of form, nervation, and crenation, affords satisfactory evidence of generic i lontit}'-. m the Tertiary plants collected by Dr. Hayden on the upper Missouri a species of Populus occurs (P. rofundifoUa), which exhibits a striking resem- blance in general form to that nov under consideration. In that species, however, the crenation of the superior margin is uniformly coarser and less acute, and the nervation is more delicate. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska. 44 THE LATKB EXTINCT FLOHAS OF NORTH AMEKICA. ■?l Vi 11 POPULU8 FLABELIiUM Newb PL XX, fig. 4. Boston Journ. Nat. Hist., Vol. VII. (1863), p. 624. " Leaves flahellate, orbicular or roniform, obtuse, wedge-sliaped at base, slightly (lecumsnt onto the petiole. Margins entire or waved; princi- pal nerves three, two lateral ones reaching nearly to the siunniit; secondary nerves fine, flexuous, forked." There is no living species of Populus of which the normal form of the leaves approaches very closely to that of those under consideration, though one, three-nerved like these, may be occasionally found among the round-leaved poplars. Ainou}.' the Tertiary plants collected by Dr. Hayden on the Yellowstone is a s))ecies, yet unpublished, very much like this, both in the form and nervation of the leaves, and among the Cretaceous plants collected by him in Nebraska is another nearly equally like it; but in both these the upper margins of the leaves are more or less crenulated. Format ion and hcalHij: Cretaceous (Puget Sound group). Chuckanutz, near Bellingham Bay, Washington. P0PULU8 GENETRIX Newb. PI. XXVII, fig. 1. Ann. N. Y. Lye. Nat. Hist., VoL IX (April, 1868), p. 64; Ills. Cret. and Tert. PI. (1878), PI. XII, fig. 1. "Leaves large, cordate in form, acuminate; margins serrate, with rather small appressed teeth; three-nerved; nervation sparse but strong; midrib straight, with few small branches; basilar nerves very strong, given off at an acute angle, nmch brancihed at the summit, reaching nearly to the margin far above the middle; from each of the basilar-lateral nerves spring five to six exterior branches, the lower ones very strong and branched, the upper slender and simj)le." In general aspect this leaf is very similar to that of the living P. hal- samifera, and ai)j)arently differs from it only in its nervation. It is more decidedly three-nerved than those of any of the living group which it may be supposed to represent — P. balsaniifcra, P. candicans, P. monilifera, etc.; yet one may occasionally find a leaf of either of these species which in this respect approaches the fossil before us. The dentation of the margin is DESCRIPTIONS OF SPECIES. 45 eHsentially that of P. halsamifera, and it can hardly bo -, i-adiating from the bane of the Icsaf; medial nerve straijfht, wimple (or Hupporting very small nerves), except near the Hummit, Where two or three larger branches rise from it; lateral nerves, two pairs on each side, springing from a connnon point of origin; lovvi^r pair arched ujjward, nearly parallel with the margin of tiie leaf, to vvliich tiiey send otl' one or more simple branches; second pair of laterals diverging from these at an angle of 30 degrees, arching upward, and running j)arallel with the midrib, terminating in the margin near the summit, eacli giving off about threct exterior branches, which curve upward and terminate in the dentations of the b(»rder." This species, by its general form and nervation, approaches closely to P. smilacifulia, but the base is rounded (sometimes slightly wedge-shaped), never distinctly cordate; the superior lateral nerves are not quite so nuich drawn together toward the sununit, and the margins are differently and much more coarsely dentate. A large number of .specimens of this species present constant and distinctive characters. They exhibit considerable variation in size, being from I to 3 inches in length, but in form, nervation, and marginal dentation they are alike. These specimens, from the collections made by Dr. F. V. Hayden, are derived from different localities, and without doubt represent a distinct species which was spread over the Tertiary cimtinent. By the character of the impressions left on the stone, as well as by the coarse and unequal dentation of the margins, we may infer an affinity between this and the downy-leafed poplars of the present epoch, such as 7'. alba of Europe, etc., while in the smooth surface and finely denticulate or entire margin of P. smilacifolia we have evidence of resemblance to P. tremuloides. 48 THE LATER EXTINCT FLORAS OF NORTH AMERICA. There is no fossil s})ecies for which this can well be mistaken. Some of the forms of P. crenata Unger (Foss. Fl. Sotzka, p. 1G6 [36], F\. XXXVI [XV], tigs. 2-5) resemble these leaves, but they are not so dis- tmctly radiate nerved. Unger represents the teeth of the margin as more acute, and more like those of P. tninula, with which he compares his fossil species. Some varieties of Populus Zaildachi Heer (Fl. Tert. Helv., Vol. Ill, p. 307; Fl. Foss. Arct., Vol. I, p. 98, PI. VI, figs. 1-4; XV, fig. lb) are somewhat like this species, and it has been suggested by Mr Lesquereux that they are identical; but in all the figures of that species published the margins are serrate-dentate, whereas in the leaves before us they are much more closely crenate-dentate ; also most of the lejnes are cordate at the base, and this is a feature given by Heer in his descri])tion, but among quite a la»'gc number of the leaves of P. Nebrasi ends whicli have served as a basis for the specific description, the foiTn is ovate, the base rounded, soiDo times a little produced, but never cordate or even emarginate. For at ion and locality: Tertiary (Eocene?). Banks of the Yellowstone River, Montana. Populus nervosa Newb. !■' PL XXVII, figs. 2, 3. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 61; Ills. Cret. and '.art. PL (1878), PI XII, figs. 2, ;j. "Leaves rounded in outline, margins nearly entire, or slightly serrate at the base, sharply but not deeply toothed on the sides, on the summit stronirlv doublv sen-ate, with a tendency to become three-lobed: nervation strongly marked and crowded; basal nerves ypringing from the midrib above the margin, given off at an "ngle of 30 degrees or more, reaching the margin above the middle, where they terminate in the most prominent teeth or lol es; from these basilar nerves are given off five or six strong lateral nerves, whiiii arch upward and, more or less forked, tenrinate in the mar- ginal teeth; above tlio basilar nerves three or four pairs of strong lateral nerves are given off from tlie midrib, which run parallel with the basilar j)air, and terminate, like them, in the compound teeth of the upper margin. The lateral nerves are coimected by immerous strong secondaiy nerves. DESCRIPTIi)NS 05 SPECIES. 49 which are generally simple and slightly arched, sometimes broken, and anastomosing with each other. This latter character gives a lattice-like appearance to the leaf, to a degrte unusual in the genus." Collected by Dr. F. V. Hayden. The strong nervation of this species is one of its most marked charac- ters, and has suggested the name given to it. By this and the double den- tation of the superior margin, as well as by their acerine form, these leaves are easily distinguishable from any of those with which they are associated and any hitherto described. Formation and locality: Tertiary (Eocene f). Banks of Yellowstone River, Montana. POPULUS NERVOSA ELONOATA Newb. PI. XXVIII, fig. 1. Popuhis nervosa var. B. ehngatM Newb. Anu. N. Y. Lye. Nat. Hist., Vol. IX (April 1808), p. 02 ; Ills. Cret. and Tert. PI. (1878), PI. XIII, flg. 1. "Leaves ovoid or oblong in outline, wedge-shaped at base, abruptly pointed at suirunit, bsssal margins entire, sides rather finely toothed, superior margin, coarsely, somewhat doubly dentate; nervation strongly marked, less crowded than in var. A.; basal nerves springing from the midrib above the basal margin nearly straigiit, reaching the sides above the middle and terminating in the first large dentations of the upper margin; exterior lateral nerves of the basal pair, three or four in number, remote, nearly simple, curved upward, and terminating in the lateral teeth; secondary nerves above basal pair, three on each side of the midrib, parallel with the basal pair, and connected witli them, each other, and the midrib, by numerous strong, generally simple, lattice nei-ves." Collected by Dr. F. V. ITayden. The nervation of these leaves is essentially the same as that of those last described, and whicli, notwithstanding the diflerence of form that they represent, I am inclined to consider as belonging to the same species. This diversity of form is not greater than may be seen in the leaves of any poplar tree, and the differences of dentation are not greater than those observed in diflerent leaves of many living and fossil species. The o-gir of the large basilar nerves above the base of the leaves, the strong and .^ MON XXXV 4 — ..— -.^c„:.,_ — _„„ 50 THE LATER EXTINCT FLORAS OF NORTH A5IERICA. latticed nervation, and the dentation of the same general character, with the fact that all the specimens are from the same locality, all combine to lead me to consider the two forms as specifically identical Formation and locality: Tertiary (Eocene f). Yellowstone River, Mon- tana. POPULUS POLYMORPHA, Newb. if! .l-_ PI. XLVI, figs, 3, 4; XLVII, fig. 4; XLIX, figs. 4, 7, 8, 9 [misprinted 1]; LVIII, fig. ^• Proc. U. S. Nat. Mas., Vol. V (March 21, 1883), p. 506. "Leaves petioled, ovate, rounded or slightly wedge-shaped at the base, acute or blunt-pointed at the summit; margins coarsely and in'egularly crenate, dentate, or crenate-dentate ; nervation strongly marked, pinnate; in the more elongated forms, al)out eight branches on each side of the midrib given off at an acute angle; in the broader forms the lower nerves issue at nearly a right angle ; the upper ones at an angle larger than in the preceding form." The leaves of this tree are the most numerous of all represented in the collection from Oregon made by Rev. Thomas Condon, several hundred in greater or less completeness being included in the specimens which have been passed in review. They .show a marked diversity of form, some being long ovoid or elliptical, leather pointed at base and summit; others ovoid or roundish with a ronuJed base; some are light and delicate, others have strong nerves, and evidently were tiiick and leathery in texture. More generally a base similar t.) that on PI. XLIX, fig. 9, accompanies a summit coarsely dentate or crenate. It is with some hesitation that this leaf has been referi'ed to Populus, but it presents greater affinities in nervation and marginal markings with this group than any with which they have been compared. The general aspect of the leaf represented on PI. XLVI, fig. 4, is (juite that of some of the poplars, jjarticularly of the group represented by the abele (/*. alha, L.), while the specimens figured on PI. XLIX, figs. 4 and 7, and PI. XLVII, fig. 4, are so different from the prevailing style of poplar leaves that the j)ropriety of referring them to this genus seems questionable. There are, however, connecting links between all these different forms, and the general ■'m DESCRIPTIONS OF SPECIES. 51 resemblance of the group to the leaves of the poplars is strong enough to waiTunt their provisional association. Among the fossil leaves which have been described as species of Populus some of the many forms of P. mutahUis Heer show a considerable resem- blance to these before us, and one phase of Populus Icitcophiflla Uug. (Kl. Gleichenberg, p. 177 [21], PI IV, figs. 6-9), especially that represented in fig. 9 of the plate cited, could hardly be distinguished from some of the Bridge Creek leaves Formation and locality: Tertiaiy (Miocene). Bridge Creek, Oregon. Populus khomboidea Lesq. PI. XX, flgs. 1, 2. Am. Journ. Scl , Vol. XXVII (1859), p. 360. In the collection of the Northwest Boundai y Commission are numerous specimens which I have referred with some doubt to species of Populus described by Lesquereux. My specimens are, however, too imperfect to permit me to decide with certainty the question of their identity. Asso- ciated as they are with Inoceramus, there can be no reasonable doubt of their Cretaceous age. Among the fossil leaves brought from Orcas Island, there are some which bear considerable resemblance to these, but they are too imperfect to render the comparison satisfactory. Formation and locality: Cretaceous (Puget Sound group). Nanaimo, Vancouvers Island. PoPULl BOTUNDIFOLIA Newb. PI. XXIX, figs. 1-4. Proc. IT. S. Nat. is.. Vol. V (March 21, 188.3), p. 500; nis. Cret. and Tert. PL (1878), PI. XI flgs. 1--1, luider P, cuneata. "Leaves of sii dl size, rarely more than an inch in diameter, approxi- mately circular in outline, either quite round or transversely or longitudi- nally elliptical; slightly wedge-shaped at the base, and decuiTent on the long petiole; basal margin entire; upper half of leaf coarsely crenate, dentate, and usually short pointed at the sunnnit; nervation flabellate, con- sisting of a median and two principal lateral nerves, which give off numer- ous branches " 52 THE LATER EXTINCT FLORAS OF NORTH AMERICA. 1 1 'i ■tx When tlie leaf is more than usually elongated, as in fig. 3, the basilar nerves spring from the midrib a little below the junction of the main lateral branches. The normal form is well represented in fig. 1, but it is not unu- sual to see those which are sliglilly flabelliform, like fig. 4. The tissue of the leaf would seem to have been thick and leathery, since the surfaces are unusually smooth, and the nerves sunk in the parenchyma are often scarcely perceptible. The leaves described above present some anomalies in form and struc- ture as compared with most of our poplars, since they are frequently fla- belliform, and were aj)parently of much thicker and denser tissue than those of any living species. They present, however, a marked resemblance to those described and figured in this report under the names of P. elliptica and F. flabellum, one from the Dakota group of Kansas, thes. other from the U{)per Cretaceous of Orcas Island on the northwest coast, and /'. cnnenta from the Tongue River Tertiary; and all the group, in form, nervation, and seiTatiim, have sufficient likeness to some of the living poplars, particularly to P. tremidoides of America and P. pminosa of Songaria, to warrant their being included in the same genus. There are some tropical trees of which the leaves present considerable resemblance to our fossils, especially one of the Proteacese (^Adenanthos cune- atus of Australia), the leaves of which are small, cuneate at bfi«e. roiuided at summit, where they are coarsely crenate, liaving almost precisely the form of one of the specimens of the fossil in question. This is, however, apparently an abnormal form, and the similarity which I have noticed is perhaps accidental and certainly of little value. The nervation of these fossil leaves is considerably difierent from that of Adenanthos, and a mere rejsemblance in form, however close, would hardly waiTant us in supposing that the fossil plant could have any very near affinity with one so far removed geograi)hically and boianically from the flora with which it is associated. Probably all the specimens represented by figs. 1, 2, 3, and 4 belong to one species, though that from which fig. 3 was taken was obtained in a different locality from any of the others and has a somewhat different aspect. Taken by itself this might readily be supposed to belong to a rosaceous plant, perhaps a Rubus, Pyrus, or Crata-gus; but it would be difficult to find its exact counterpart in any living sjjecies of these genera. It is perhaps flWliiim DESCRIPTIONS OF SPECIES. 53 safer to consider it, only an unuHual form of fijj. 1 and refer it pro\'isionally to the same species. Its i('al value will be secured by the truthful fissure "iven of it. Fonnation and local it i/: Tertiary (Eocene?). Yellowstone River, Mon- tana; Fort Union, Dakota; Carbon Station, Wjoming. POPULUS SMILACIFOLIA Newb. PI. XXIX, flg. 5. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 6G; Ills. Cret. and Tert. PI. (1878), PI. XIV, flg. 5. "Leaves ovate, pointed, slightly cordate at the base: margins finely and obtusely crenulated; nervation radiate, delicate and sparse; medial nerve straight, giving off only fine and scarcely perceptible lateral nerves below, and two or three longer branches near the suminit; two pairs of latei'iil nerves radiate with the medial nerve from the same point at the base of the leaf; of these the lower two are small, nearly simple, and arched evenly upward; the other two, nearly as strong as the midrib, spring from the ba.se at an angle of about 25 degrees, and after diverging to the middle of the leaf, curve upward toward the summit, near which they terminate in the margins. These lateral nerves support four or five simple or once-forked branches, each given off exteriorly, which curve upward, and terminate in the lateral margins. The tertiary nerves are given off nearly at right angles from the secondaries and form a delicate polygonal or quadrangular network over the surface of the leaf" Collected by Dr. F. V. Hayden. The lower pair of lateral nerves should properly be considered as branches of the larger ones, so that the leaf is more distinctly three-veined than that of any living species of Populus. This character, with the smooth surface and nearly entire marg-Ins, gives these leaves the general aspect of those of Smilax and suggested the name given them. Their nervation, however, is sufficiently distinct from that of Smilax, and is clearly that of Populus, though in a somewhat exaggerated form. In Smilax three or five nerves radiate from the base of the leaf and terminate together at the summit, which those of the leaves of Populus never do. In Smilax, too, the principal nerves give oft' no large branches, but all the 7 54 THE LATKR EXTINCT FLORAS OF NORTH AMERICA. •%' iiiterHj)ace8 are filled with a lahvnnth of unastotnosing veins, forming' a very different network from that of I'opulus. The marginal serration of the present species would seem to have been much like that of the leaves of the living P. tremuloides, but still finer, while the size of the leaf was considerabl)' larger. Fonuation and locality: Tertiary (Fort Union group). Fort Union, Dakota. POPULITES ELEGANS Lesq.l PI. VIII, fig. 3. Am. Joiirn. Sci., Vol. XLVI (July, I8fi8), p. O-i. Note. — So identified by Dr. Newberry, as indicated bj' memorandum on the margin of the plate. — A. H. Formation and locality: Cretaceous (Dakota group). Fort Harker, Kansas. Salix angusta A1. Br.? PI. LXV, fig. 2. In Bruckm. "Fl. Oening. Foss." Wiirtemb. Naturwiss. Jahresh. (1850), p. 229. S. angustifolia Al. Br., in Buckland, Geol. and Mineral., p. 612 (1837).' A very narrow-leaved willow; is exceedingly common in the Green River beds, some slabs of the rock being quite covered with the leaves. These are narrow, lanceolate, tapering gradually to a long and strong petiole and to a long, narrow, and acute point above. The margins are entire and sharply defined, the midrib strong, the lateral nerves numerous and fine. In general form these leaves agree very well with the excellent figures of Snlix amfiista, given by Heer in his Fl. Tert. Helv., Vol. II, p. 30, PI, LXIX, figs. 1-11, but the base is in our specimens narrower, so much so that the blade seems to be decurrent on the petiole. The leaves from Green River apparently rejjresent the same s))ecie8 as that figured by Lesquereux, (Tert. Fl., p. 168, PI. XXII, figs. 4, 5) but perhaps not that shown in fig. .5, as in all the many specimens now before me the base is narrowei and more ' The oldest published name for this species is S. nngHstifolia Al. Br., 1837, but this name was preoccupied by the living species. This fact was apparently recognized by Braun, as he sub- sequently changed it to S. angimta, which is here adopted.— A. H. , m ^ DESCRIPTIONS OF SPECIES. 55 wedge-shiiped than the hitter. Unfortunately the specimen represented in tig-. 4 has the base and suninnt broken away, and the identitication is therefore not absolutely certain, but as it was obtained in the same region where Dr. White collected the narrow-leaved willows before ns there is every probability that they are the same. Whether the narrow-leaved willow of the Green River beds is identical with that found in the so-called Miocene or Oeningen is, however, an open question. That both are willows there can be no reasonable doubt, but the leaves of so many species r>i willow are nan-ow lanceolate with tapering- bases and summits that it is quite impossible to be sure of an identitication based on a mere general resemblance. All we can say, therefore, is that 'luring the deposition of the Green River Tertiary beds willow trees grew on the banks of the rivers and lakes of that region, having long, narrow leaves with simple margins and undistinguishable by any well-marked character from those obtained from the Tertiary of Oeningen.^ Formation and locality: Tertiary (Green River groui)). Green River, Wyoming. Salix cuneata Newb. PI. II, figs. 1, 2. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 21; His. Cret. and Tert. PI. (1878), PL I, figs. 1, 2 [fig. 1 under Salix Meekii]. "Leaves of medium size, sessile or short-petioled, entire, elongate, nan-ow, acute at both ends, broadest toward the apex, gradually narrowed below to the base; medial nerve distinct; secondary nerves delicate, springing from the midrib at an angle of about 20 degrees near the middle of the leaf, 15 to 20 degrees below, straight and parallel near the bases, gently arched above and inosculating near the margins." Collected by Dr. F V. Hayden. This species presents some marked characters by which it may be dis- tinguished from those before described. It is true that the variations of form among the leaves of our recent species of willow are almost infinite, and even in the same species and from the same tree leaves may be obtained fi, - •'/ f ™Pf '«>" °l "">• flg"'-« with those of Heer and Leaquerenx leads me not only to doubt their Identity, but to think that ours la more hkely to be a Eucalyptus. The marginal nervation is certainly more characteristic of the latter genus than of Salix.— A. H. 1 ..m 56 THE LATER EXTINCT FLORAS OF NORTH AMERICA. of such different asjiect that, taken separately, they might readily be mis- taken for those of (liferent species. Since the difficulty in the determina- tion of recent willows is so great that it has become proverbial, specific distinctions derived from the leaves only, especially in those obtained from the same localit}', may justly be looked upon with suspicion. Here, as elsewhere, however, it is probable that recent botany will derive some aid from the careful study of fossil plants, and the nervation will probably be found to afford constant characters where the outlines of the leaves can hardly be relied on. It may be seen by reference to the foregoing descriptions of Salicea that a number of charactei's combine to distinguish what, for geological convenience, I have chosen to regard as distinct species. Salix Meekii is lanceolate, tapering nearly equally to both ends, which are alike acute; this leaf is petioled and the nervation regular and delicate. S. flexuosa is sessile, linear, and rather abruptly narrowed to jjoint and base; nervation obscure, apparently very delicate and uniform. S. cuneata is comparatively thick and leathery, the form symmetrical, lanceolate, pointed, but scarcely acute at both ends; the midrib strong, prolonged into a short, robust petiole; secondaiy nerves unequal, given off at a large angle, thick at base, slender, tortuous, and iiTegularly confluent near the margins. In S. memhranacea the leaves ai'e large and thin, broadest near the base, which is rounded, summit long-pointed and acute; nervation distinct and regular, but delicate. Formation ami locality: Cretaceous (Dakota group). Mouth of Big Sioux River, Nebraska. 7^r« Salix flexuosa Newb. .1 ii.i PI. II, fig. 4; XIII, flgs 3, 4; XIV, flg. 1. Ann. N. Y. Lye. Nat. Hist., VoL IX (April, 1868), p. 21 ; Ills. Cret. and Tert. fl. (1878), Pi. I, flg. 4. " Leaves nairow, linear, pointed at each end, sessile or very short- petioled; medial nerve strong, generally somewhat flexuous; secondary nerves pinnate, leaving the principal nerve at an angle of about 40 degrees, somewhat branched and flexuous, but arching so as to inosculate near the margins." DESCRIPTIONS OF SPECIES. 57 ^m This is perhaps only a variety of S. Meekii, wliich it resembles in its nervation, as far as can be observed in specimens fossilized in sandstone, but, although nmch narrower in its general form, it is less acuminate at either extremity, and is apparently sessile. As in some of our living narrow-leaved willows, these leaves are generally somewhat flexuous, and as they are seen lying in their natural curves on the surfaces of the rock they have as familiar and perfectly willowlike a look as leaves of Salix angustifolia would if artificially fossilized in the manner followed by Goeppert. Since the above description was written I have collected this species from a number of widely separated localities and found it to hold its char- acter with great constancy. Formation andlocality : Cretaceous (Dakota gi-oup). Big Sioux River, Blackbird Hill, Cedar Spring, etc., Nebraska, and Whetstone Creek, New Mexico. Salix foliosa Newb. n. sp. PL XIII, figs. 6, 6. Leaves long-petioled, broadly linear; 8 to 9 inches long by 1 inch wide; suddenly narrowed to the base; acute at the summit; margins entire, sometimes undulate; nervation delicate. Leaves of this species occur in great abundance on the banks of Whetstone Creek in northeastern New Mexico, and chai-acteristic figures are given of specimens collected by myself in that locality. The leaves are larger than those of any other known Cretaceous Salix, unless it be 8. memhranacea; but it differs from that in its leaves being wedge-shaped instead of rounded at the base. From the locality referred to, where the fossils are contained in a fine- grained, light-colored sandstone, in which the most delicate tissues would be preserved, we may expect the ft-uit of these and other fossil plants to be discovered, with a decided illumination of the botanical affinities of the plants of the Dakota group. Formation and locality : Cretaceous (Dakota group). Whetstone Creek, New Mexico. 58 TllE LATE II EXTINCT I I OKAS OP NORTU AMEltlCA. Salix Mkkkii Nt'wb. 'if ] "1 •1 l-lj i 'r 1^l^ PI. 11, (Ig. 3, Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 10; Ills. Cret. and Tert. PI. (1878), I'l. I, fig. ;J [under S. rnneata}. "Leaves petloled, thin mid delicate, lanceolate, acute at both ends, nervation delicate, inidrib slender, .Hecondary nerves fine, spring'inif from the medial nerve at an anyle of 3;') dej^rees, f^ently arched and anastttmosing near the margins; network of tertiary veins somewhat lax, but composed of nervules of such tenuity as to be rarely visible." This is the plant of which an outline sketch was sent Professor Hoar by Mr. Meek. In that sketch the general form was alone given, the details (tf nervation, as well as the texture of the leaf, not being deducible from it. Professor Heer considered it a Laurus, and as probably identical with Laurus 'primigenia Ung., a common species in the Tertiary of Europe. Aside from the a priori imjirobability of this | it, found in the Middle Cretaceous rocks, being identical with one whicii in tlic Old World dates back no further than the Miocene, there are characters in the fossil itself which seem to separate it from even the genus Lam*us. The nervation has a different aspect from that of any of the Laurac^se with which I am acquainted, being both more lax and delicate, the secondary nerves less accurately arched, and their summits more wavy ; the patterns formed by their anastomosis less regular and determinate. In these respects, as well as in its comparatively thin and delicate texture, it resembles much more the willows than the laurels. It seems hardly worth while to compare the plant before us with any of the living willows, for everything indicates that all the species of the Cretaceous, both vegetable and animal, long since perished Among the great number of fossil species found in the Tertiary strata there are several whicli have a general resemblance to it and from which it might be unwise to regard it as d'stinct if they were from the same formation. Salix elotifjata Web. (Palaeontogr. (1852), PI. XIX, fig. 10) has nearly the same form, but the secondary nerves are given off at a larger angle £>nd are much more arched. From its associate species in the Cretaceous strata it seems not diffi- cult to distinguish it. Salicites Hartigi Duuker (^Palajoutogr. (1856), p. 181, DESCIIIPTIOXS OF Sl'ECIKS. 59 I'l. XXXIV, (ij>-. 2) is iipiKircntly niiicli iiuuv stroiij>ly nerved. The jjeii- enil lunn wus perhaps siiniliir, although Duuker'H apechueii wants both l)on»t and haso. Formation and localitif: Cretaceous (Dakota group). Bhickbird Hill, Nebraska. Salix mkmbranacga Newb. PI. II, figs. 5-8,' 8a. *.Qn. N. Y. Lye. Nat. Hist., Vol. IX (April. 1808), p. 1!); Ills. Cret. and Tort. PI. (1878), PI. I, figs. 5-8a [tig. 8a not niimod on plalc]. "Leaves petioled, larf^e, smooth, and thin, lanceolate, long-pointed, rounded or abruptly narrowed at the base, near which they are broadt^st; margins entire; medial nerve slender, often curved, secondary nerves remote, very regularly and uniformly arched from their bases, terminating in or produced along the margins till they anastomose; tertiary ncM'ves given off nearly at right angles, forming a very uniform network of which the areoles are polygonal and often (juadrate." This is a strongly marked species, collected by Prof. George H. Cook, of which I have specimens fossilized in fine clay and exhibiting with great distinctness all the details of nervation. It wan evidently thin and mem- branous in texture, though attaining a large h'v/ai. Like most of the willows, it is frequently unsymmetrical, one side being most developed and the midrib curved. The leaf is liroadest near the base, and i.s thence naiTowed into a long and acute point. Formation and locality: Cretaceous (Raritau). Amboy Clays, Rjiritan River, New Jersey. Order BETULACE^E. Cabpinus grandis Ung. PI. LIV, fig. .3, in part ; LV, fig. 6, Synop. Fobs. PI. (1845), p. 220. Leaves which seemed to represent this very widespread species of Carpinus were collected by Professor Dana at Birch Bay, neai- the mouth ' This specimen may also be found figured in Flora of the Araboy Clays, PI. XXIX, fig. 13. (Men. U. S. Geol. Surv., Vol. XXVI.)— A. 11. 6r) ■I'HK LATER KXTINCT FLORAS OF NORTH A.MKRICA. of Fraz<*r llivor, and appear in I'l. XXI, fij^. 10, of the Atlas which accoiiipaniuH tho Uoohtf^y of tiio Willtcs Kx])l<)rin)^ Kxpeditiou. Upon tlio same shil) are soon tht^ hranchoH of (fifjplostrolms l/iit/ni (f), tho hranchletH and cone of Taxodlum dlstichiim miocenum, loaveH of lihamum (iundinl (?), and Smilajr ci/dopliiflla Newb. Some of these are reprothiced on PI. LIV, fig. 3 ((^aq)inuH and Smilax); PI. LV, figs. 3 to (> (Gly|)tostrohus, Tax- odiiun, Carj)iauH). Very few fossil jjlants wore brought from this locality, but they seom to represent a horizon .somewhat difi'erent ir >m that which has supplied any other specimens in the collection. Leaves of various kinds appear to be exceedingly abundant and beautifully preserved tliere, and it is to bo hoped that the locality may be visited by some other collectors, who shall bring us a fuller representation of its riches. Formation and locality: Tertiary (Eocene I). Birch Bay, Washington. CoBYLUS Amebicana fossimh Newb. PL XXIX, flgs. 8-10. Corybia Americana Walt. Newb. Ann. N. Y. Lye. Nat. Hist., VoL IX (April, 1868), p. 69; Ills. Cret. and Tert. PL (1878), PL XIV, flgs. 8-10. Among the variety of specimens of the leaves of C. Americana with which I have compared these fossils, there are some which, if fossilized, would form impressions absolutely undistinguishable from them, and I have therefore found it impossible to fix upon any characters by which they can be separated. As compared with the fossils which I have referred to C. rostrata, these leaves are a little more rounded in outline, the nervation somewhat more open and delicate, the marginal teeth more nearly equal in size, and more obtuse. Of all the species of Corylus, living or fossil, which have been described, there is none of which the leaves so much resemble the ones under consid- eration as do those of C. Americana. Collected by Dr. F. V. Hayden. Formation and locality: Tertiary (Fort Union group). Fort Union, Dakota. DEHCRIPTIONS OF aPECIES. 61 C0RYLU8 Mac(,Juai{rii (ForboH) Ileer. PI. XXXII, H«. 6; XLVIII, tig. 4. Alnifes f MacQuarrii Forbes. (Juiirt. Journ. Gcol. S(M5. I'Ondon, Vol. VII (1861), p, nr.i, PI. IV, t\g. 3. Conjlua MacQuarrii Iloor. Urwelt. d. Schw. (1865), p. 321. Curi/lus (jrandifoUa Nowb. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 69; Ills. Ciet. and Tert. PI. (1878), PI. XV, flg. 6. "Leavos large (6 to fi iiicheH long), Hhort-petioled, uner curved, not sinuous; lateral nerves, six to seven pairs; lower j)air diverging at a larger angle than the upper ones, i.nd sup- porting a number of short, generally simple, brandies, on the lower side, which terminate in the basal margin; second pair diverging at an angle of 45 degrees, reaching the margin about the middle, supporting about four branches on the outside; upper pair simple or branched once, rarely twice." Collected by Dr. F. V. Hayden. This was evidently a large, thick, roughish leaf, having more the aspect and texture of tlie leaves of the mulberry than of the hazel. The nervation is, however, much nearer that of the latter genus. Indeed, in all essential characters it is the same as that of the three species of Corylus with which it is associated. The dentation of the margin, also, is acute, unequal, partially double, much more like that of the leaves of Corylus than of any of those with which I have compared it. As is remarked in the description of C. orhiciihtta, a large amount of material has been collected and described since the description of C. grandi- folia was written, and it has been shown that numerous leaves of Corylus of large size occur in the Tertiary beds of many parts of North America and extend to the European continent. Comparing our specimens with these figures and descriptions, we are led to believe that our C. gmndifolia is only a large and strong form of C. MacQuarrii. Formation anil locality: Tertiary (Fort Union group). Fort Union, Dakota. RW;-w;riA V'y w ^ "iSf^^y^ ■'^■T^^y 62 THE LATER EXTINCT FLORAS OF NORTH AMERICA, COKYLUS ORBKUl.ATA Kewb. PI. XXXlf, fig. 4. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 58; Ills. Cret. and Tert. PI. (1878), PI. XV, fife. 4. "Leaves small, orbicular, or nearly so, slightly and unequally cordate at base, blunt-pointed above ; margins set with fine and neai'ly equal teeth ; nervation strong; midrib curved and slightly sinuous; lateral nerves about seven pairs, mostly straight and nearly parallel among themselves, lower pair sending off each ..even to eight short, simjjle or forked branches which terminate in the teeth of the edge; second pair supporting each about three branches of similar character; upper lateral nerves simple, or having each two to three branches near the summit; tertiary nerves parallel, distinct." Collected by Dr. F. V. Hayden. This is ano ler huzel-like leaf, of which, without the fruit, the classifi- cation must be somewhat doubtful. The general form is more like tiiat of the leaves of Tilia (T. Ann'.ricana and T. Europcea), being much rounder than those of any species of Corylus with which I am familiar. The nervation is, however, different from that of Tilia and is, in fact, altogether that of Corylus. In Tiliit the leaves are usually broadly cordate; the nervation of the base and lateral portions of the lea." being supplied from the fir.st or basal pair of lateral nerves, whi* h are largely developed, mucli branclied, and reach considerably above iJio middle point of the lateral margin. In Cor-lus, on the coutra>y, the basai jierves are short and supply only the basal margins; the second pair of lateral nerves is relatively more devel- oped tlu-r In Tilia, Moras, etc., and in the number and parallelism of the lateral nei'ves their leaven ujiproach more nearly to the strictly feather- veined leaves of Fagus, Aiii s, etc. bince the above description was written Pn^fessor Heer has published h's splendid series of volumes on the arctic flora, and has in a number of places madp reference to or given figures and descrii)tious of Cori/lus Mac- QiKiri'i, whicii shows that this was a very variable species, and perhaps the leaf vmder consideration, to which from its circular form I gave the name V. oihiculata, is but one of the numerous varietic^s of tliis plant, which seems to have been widely spread over all the North American continent during Tertiary times. Further collections nadc* in the country bordering the iWtoii-, DESCRIPTIONS OF SPECIES. 03 upper Missouri will doubtless su])ply Ji larger amount of material illustnit- m^ this species, and may prove it to be worthy of reoogiiition as distinct from all others. Taken by itself it presents such striking differences from tiie other species of Corylus known that it has seemed to me best to give it a distinct name. Formation and locality: Teniary (Fort Union group). Fort Union, Dakota. COKYLUS ROSTRATA F0SSILI8 Newb. PI. XXXII ii'^s. 1-3. Corylus rostrata Ait. Newb. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 60; Ills. Oet. and Tert. PI. (1878), PI. XV, figs. 1-3. "These leaves offer no characters by which they can be distinguished from those of the living 'beaked hazel-nut.' They are clearh* those of a. hazel, and show such a perfect correspondence with those of one of the species living in the region where these fossils occur that, until the fruit shall be found and the question definitely settled, I have thought it best to consider them as identical." Collected by Dr. F. V. Hayden. Corylus imigim Heer (Fl. Tert. Helv., Vol. II, p. 43. PI. LXXIII, figs. 11-17; Fl. Foss. Arct, Vol. II, Abth. IV, p. 4G9, PI. XLIX, rig. !^) is closely allied to the plant under consideration, and should perhaps be united with it. Formation and locality: Tertiary (Fort Union group). Fort Union, Dakota. Betula angustifolia Newb. PI. XLVI, flg. 5; XLVII, fig. 5. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. .508. "Leaves petioled, oblong-lanceolate, 3 indues long by 1 inch wide; wedge-shaped or slightly rounded at the base, acuminate at summit; mar- gins finely serrate below, coarsely and doubly serrate above; nerves slen- der, about eight branches on each side of the midrib." These leaves, of which there are a number in the collection made by Rev. Thomas Condon, are distinguished from the other species of Betula with which they are associated by tlieir narrower and more elongated form "%J1 64 THE LATER EXTINCT "FLORAS OB^ NORTH AMERICA. ■'1 and tl)e coarse, double-crowded dentation of the upper portion of the loaf. They are also separated b}' these characters from the numerous other spe- cies of the genus mentioned by Professor Heer as found in the Tertiary of the northern part of this continent, B. macrophylla (Fl. Foss. Arct., Vol. I, p. 146, PI. XXV, figs. 11-19), B. prisca Ett. (Heer, Fl. Foss. Arct., Vol. I, p. 148, PI. XXV, tigs. 20 ; Fl. Foss. Arct, Vol. II, Abth. II, p. 23, PL V, tigs. 3-7). They bear a closer resemblance to the leaves of B. ostryafoUa Sap. (Fl. Foss. Sezanne^ p. 345 [57], PI. XXV [IV], fig. 8), and B. SezanneH8is Wat. (PI. Foss. Bass. Paris, p. 130, PI. XXXIV, fig. 6); but both these species are crenato-dentate, while in the leaves before us the teeth are acute. Among living species this may be comptired with B. lenta Willd., bi'^ is narrower and the marginal dentation is less unifoiin. The leaf tiguied on PI. XLVII, tig. 5, differs somewhat from those which have been here associated with it, in its more rounded base, coarser dentation 1h;1o\v, moj-e open nnd opposite nervation, and it may represent another species. Part of these differences, however, is probably due to difference in the preservation of the marginal dentation. Formation and locality : Tertiary (Miocene). Bridge Ciaek, Oregon. Betula heterodonta Newb. Pl.XLIV, fig8. 1-4; XLV, figs. 1,6. Proc. IT. S. Nat. Mns., Vol. V (March 21, 1883), p. 508. "Lefif 2 to 4 inches in length, long petioled, ovate, acuminate, rounded at the base; msirgins coarsely and irregularly serrate, the principal denticles receiving the tenninations of the nerve branches; the sinuses between these sometimes plain, sometimes set with a few small teeth; nervation delicate, about eight branfihes given off from each side of the midrib." The collection from Oregon, made by Rev. Thomas Condon, contains a large number of leaves belonging to this species. These present consid- erable variety in size, as will be seen in the figures. There is also some diversity in the degree of denticulntidu ot the margin. The examples which show this best among tht)se figured are PI. XLIV, fig. 2; PI. XLV, fig. 1. Here w* see the lateral nerve brancln s running into prominent teeth of the margin as in many ftrhcr species of Betula, such as B. nigra L., B. Blancheti Heer, but the sinuses between these larger teeth are sometimes DESCRIPTIONS OF SPECIES. 65 entire, soinetimes bear a few small teeth. The inarguial markinfrs are hardly showu in the larpfest leaf now iijiured, and it is repre.st'nted simply to give >:he form and ra])h, it is at once distinguished by the very much finer marginal dentation, as well as by the greater lunnber of nerve branches, "^riie remarkably tine denticulatiou of the margin is a character which di.stinguislies it from A. Kieff'crstcinu and A. nostratum the spe(;ies most commonly preserved in the Tertiary rocks. Formation and locality: Tertiar}' (Miocene). Kootznahoo Archipelago, latitudt 57° 3r>', longitude 134° 19', Alaska. Collected by United States steamer Saginaw, Februarv 18, 1869. Alnus serrata Newb. PL XXXIII, fig. 11, Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 55; Ills. Cret. and Tert. PI. (1878), I'l. XVI, fig. 11. "Leaves oval or elliptical, slightly cordate at the base, rounded or sub- acute at summit; margins serrate throughout, sen'ations fine, sharp, and appressed below, coarse and doub'.e above; nervation pinnate, strongly marked; basilar pair of lateral nerves short and simple, upper ones branched near the extremities." Collected by Dr. F. V. Hayden. These leaves have nearly the form of Almis Kicffersteinii Uno-. (Chlor. Prot., p. ll.""), PI. XXXIII, tigs. 1-4), and a nervation similar in kind, but more crowded. The marginal serration is also coarser. Formation and locnliti/ • Tertiary (Eocene f ). Jianks of Yellowstone River, Montana. Alnus serkulata fossilis Nev;b. n. sp. PI. XLVI, fig. 0. Among the leaves from Bridge Creek occurs one very beautifully preserved, which is represented in fig. 6, PI. XLVI. It will be seen at a glance that it (dosely res(3mbles the leaves of A. serrulata, and I have been unable to find any characters upon which to base a distinction. More material will of course be needed before the fact may be considered estab- lished that our most common alder was growing iii the Tertiary. There would be nothing surprising, however, in such a discovery; indeed, it was tifully at a been More estab- There it was DESt!liIl'TI()NS OF SPECIES. 67 to be expected tliat this species, so widespread as it now is, should have some representative in the Tertiary flora. We know that our Hviufr flonv of North America is the pro<^ony by direct descent of the Tertiary flora, and the result of investij^ation will imdoubtedly be to increase the number of species considered identical in the two floras. Formation and locality : Tertiary (Miocene). IJridge Creek, Oregon. Alnus sp.l Newb. IM. XIA'I, <••-,'. 7. Note. — Accompanying this figure, on the margin of the plate, and on the specimen label, are memoranda by Dr. Newberry referring it to this genus and giving the locality. Further information in relation to it is lacking. — A. II. Formation and locality: Tertiarj' (Miocene). Bridge Creek, Oregon. Alnites obandikolia Newb. PI. IV, fig. 2. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 9 (name only); Ills. Cret. and Tert. PI. (1878), PI. IV, fig. 2. Leaf orbicular, with coarsely and obtusely dentate margins; nervation .strong, consisting of a straight midrib with six tose\ 68 THE LATER EXTINCT FLORAS OF NORTH AMERICA. species of the latter f^enus in the floras of America and .Japan gives reason to suppose that this was an element in the old flora which spread from America into Asia an(l Europe, and therefore gives a probability of its being found in the Tertiary and even Cret!.ceou8 flora. Formation and locality : Cretaceous (Dakota group). Blackbu'd Hill, Nebraska. Order FAGACE^. Fagus cketacea Newb. PI. I, fig. 3. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 23 (named, but not specifically described); Ills. Cret. and Tert. PI. (1878), PI. II, fig. 3. Leaves iJ to '6 inches in length, ovate in outline, pointed above and below, petioled, nervation sharply defined, regular, lateral nerves parallel, straight below, gently arched above, terminating in the mai'gins, which are sometimes gendy undulate, the nerves terminating in the prominences of the margins; in otlier leaves the margins are ([uite entire and nothing of this last-mentioned character is seen. Collected by Dr. F. V. Ilayden. This pretty species is rej)resented in the collection by but a single specimen. This is, however, remarkably well preserved, giving the general form and the details oi' nervation with great distinctness. From the char- acter of the nervation 1 have little hesitation in referring it to the genus Fagus. Some of the Rhamnaceie, particularly species of Rhanmus and Frangula, have leaves which would be very like the (Uie before us if fossil- ized; l)ut in the fo.ssil plant the lateral nerves are sharply defined, numerous, almost perfectly parallel among themselx'es, and run tjuite t(; the margins, which are seen to be slightly waved, the termini of the nerves being must promine it and the intervals between them forming shallow sinuses. In Khamnus, however, even in R. frangula, of which the leaves so irmch resemble this, tlu' margins are not waved and the lateral nerves do not terminates as distinctly in them as they do in Fagus nid in our fossil. A striking similarity may be noticed between some of the leaves of the living Fagus sglvatica, and this, though there is no probability of that species having begun its life so early in the history of the globe as the first part of the Cretaceous period. The resemblaiu^c !■< noted only as giving jg\H)d DESCRIPTIONS OF SPECIES. 69 emble grounds for the reference of the fossil to the genus Fagus. It will be neces- sary, however, to find the fruit before the fact can be accepted as fully- proven of the existence ot beeches during the Cretaceous. A large number of fo.ssil species of Fagus have been described from the Tertiaries of Europe by Unger, Dunker, Heer, etc., but the genus has never before been obtained from the Creta(!eous f(^)nnation. Formation and locality: Cretaceous (Dakota group). Smoky Hill, Kansas. QuERcxrs ANTiQUA Newb. PI. XIII, fig. 2. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 26. "Leaves of medium size, lanceolate in outline, acute, often somewhat flexuous; margins seiTatc-dentate, with strong, obtuse teeth, which are appressed or turned toward the summit; midrib strong and reaching the apex; lateral nerves numerous, of unequal strength, gently arched upward, terminating in the marginal teeth." The specimens upon which this description is based are fossilized in a somewhat coarse ferruginous sandstone, which has not preserved the minor details of the nervation; but the generalities of form and structure, which ju"e deiirly enough shown, seent to indicate that it represented in the Cretaceous flora the chestnut oaks of the present epoch. Several Tertiary species bear considerable resemblance to it, as Q. Mediterranea Ung., and Q Haidingera Ett; but in both these species the marginal dentations are less 'iniform in size, and, when having a similar outline, are smaller. Formation and locality: Cretaceoixs (Dakota group). Banks of liio Dolores, Utah. QUERCUS BANKSIiEFOLIA Newb. PI. XVIII, figs. 2-5. Boat. Journ. N.-vt. Hist., Vol. VII (1863). |). 522. "Leaves very long, linear, lanceolate, long-pointed and acute at either end; nuirgius set with numerous nearly uniform, acute, appressed teetli turned tt>wH!'d the superior extremity; midrib strong, ruimiag the entire leugtli i^ the leaf; Interal veins numerous, simple, strongly marked, parallel, arched upward, terminating in the teeth of the margin; reticulated 'ijn'?jw^^j^.',il'j ww^"^ 70 THE LATER EXTINCT FLORAS OF NORTH AMERICA. nervation buried in the thick purenchyma of the loaf, and generally invisible in the fossil state." This beautiful loaf resembles, in the style and stn^igtli of its nerva- tion, those of the living chestnut oak, but is more slender than any other species, living or fossil, wiiic.h has come under my observation. Among described fossil s])ecies Q. Dn/meja Ung. (Chlor. Prot., p. 113, PI. XXXII, Hgs. 1-4), Q. lonchitis Ung. (Fl. Botzka, PI. IX, figp. 3-8), and Q Saffonli Lesq. (Geol. Survey of Arkansas, p. 319, Tab. VI, fig. 3) seem t*» approach it most closely, the former two, indeed, being very nearly allied to it; but in these species tluj leaves are broader and the lateral nerves are more remote. In Q. Saffonli the leaf is, perhaps, equally slender, but the teeth are coarser and less de))ressed, and the nervation much less strong and regidar, resembling in this respect that of the willow oaks ((?. Phcllos, etc.). The living species with which our plant may be compared are Q. Xalapensis and, judging from Professor Heer's description of it, Q. Sartorii Liebman. Both of thestj are from Mexico. Formation and localiiy: Cretaceous (Puget Sound group). Ghucka- nutz, near Bellingham Bay, Washington. QuERCus CASTANOiUEs Newb. PI. LXV, fig. 6. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 606. " Leaf linear-lanceolate, acute, 6 inches long by 1 inch broad; margins remotely and somewhat irregularly set with coarse, in some cases spinous, teeth; ervation strong; midrib straight, sharply defined; lateral branches uuecjuii iy spaced, simple, forked near tlie extremity, terminating in the marginal denticles." Only inq)erfect fragments of this leaf are contained in the collection made by Dr. C. A. White, but these are quite sufficient to show the species to be distinct from any other known. The iiregidarity in the dentation of the margin and in the spacing of the main nervcf branches separate this from the chestnuts and bring it within the g(Mnis Quercus, and it would seem to be allied to the living and fossil chestnut oaks. More leaves and the fructification will be needed before a compJete desci'iption can be written, but it is hoped that the fignni now given will serve for its recog- f DESCRIPTIONS OF SPECIES. 71 nition, and that since it is plainly different from any of its associates it will be in the future identified and its structure and relations be in»)re fully made out. Formation and localit*/: Tertiary (Green River group). Green Uiver, Wyoming. QUEBCUS CABTANOP8I8 Newb. PI. LVI, Fif?. 4. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 506. "Leaves oblong-elliptical, rounded at the base; nervation regular; midrib straight, branc^hes parallel, simple, terminating in the j)rin(! al teeth of the margin; margins doubly dentate, the larger teeth receiving the extremities of the nerve branches, and each cairying a minor denticle; upper surface smooth; texture of the leaf coriaceous." Collected by Mr. S. M. Rothhammer. But a single sj)ecimen of this leaf is before us, yet this is so peculiar and strongly marked that it seems to deserve description In general aspect it closely a])proaches the leaves of Castanea and Fagus, but the margins are doubly dentate, a feature I have not found in any of the beeches or chestnut.s. It is present, however, in some of the chestnut oaks, as in Q. Olafseni Heer (Fl. Foss Arct, Vol. I, p. lOi), PI. X, fig. o; XI, figs. 7-1 1; XLVI, fig. 10). It seems safer, therefore, to refer the leaf to Quercus rather than to the other genei'a mentioned. Formation and local it;/: Tertiary (Eocene?). Yellowstone River, Montana. QUEBCUS CONSIMILIS Newb. PI. XLIII, figs. 2-5, 7-10. Proc. U. S. Nat. Mas., Vol. V (March 21, 1883), p. 505. "Leaves petioled, lanceolate, acuminate, wedge-shaped or rounded at base, where they are often uneipial; margins usually dentate, oi^casionnlly oidy undulate, sometimes entire below, denticulate above; teeth acute, often spinous, sometimes short and closely appressed; nervation fine and regular; lateral nerves slender, parallel, generally an^hed upward; below, where margin is entire, camptodrome; above, craspedodrome, the braiudies terminating in the marginal teeth; tertiary nervation consisting of minute 72 TllK LATER EXTINCT FLORAS OF NORTH AMERICA. bniuches comiectiiif? tho lutoral uorvo« oitlior directly or auaHtoinoHiiif^, with tino tjuiulraiifn'ulHr iiotvvork lilliuf;' tlu' int(*rviilH. p>uit ovoid; when iiuitiire 2 centiiiiotcrs in l(Mif>th by 15 iiiillinieti'rH in l>ri>adth; cupule Hcaly,' covering nearly half of the glans." Collected by Rev. ThoniaH Condon. Of the leaves of this species the collection contains many hundreds which show a considerable diversity of size and form; some are only 2 inches in length, otiiers (i; some have the margin acutely toothed through- out, in other.s tlu; margin of tlie lower part of the leaf is entire, tlu* upper denticulate; while in others still the margins are entire or gent'y undulate to near the summit where they are always more or less denticulate. These leaves closely resemble thc;ie that have been described under the name of Q. Drymeja Ung. (Chlor. Pr.-t., p. 113, PI. XXXII, figs. 1-4; Foss. Fl. . Sotzka, p. 163 [33], PI. XXIX [VIII], iigs. 1, 2; Ileer, P'l. Tert. Helv., Vol. II, p. f)*), PI. LXXV, figs. 18-20), and also some of them, those in which the margins are closely and sharply denticulate, are not unlike Q. lonchUis Ung. (Foss. Fl. Sotzka, p. 33, PI. IX [XXX], figs. 3-H), but the prevailing character is such as apparently distinguishes them from eithcM" of these species or any other described, namely, first, the base broader than in Q. Dnjineja, fre(|uently entire for one-thirfl or one-half of the length of the leaf; second, the margins generally denticulate, but sometimes merely undulate or entire except near the suuunit — a range of variation which does not seem to prevail in the species named. In the figures given on PI. XLIII, fig, 2 represents the more common or average form and size, figs. 3, 4, and 5 the more denticulate variety. In order to make the series complete it would have been necessary to occupy the entire plate with representatif»ns of the different forms observable in the collection. In many of the specimens the preservation is complete, the outlines being shari)ly defined, the minutest subdivisions of the nerves being retained. Tie number of acorns and cujjules contained in the col- lection is also large, and while it is possible that not all belong to this species, as it is by far the most abundant we are compelled to connect the abundant acorns with the numerous leaves. In fig. 7 an innnature acorn is shown still attached to the stem; in fig. 8, a detached cupule; in fig. 9, the ba«e of a large acorn; in fig. 10, a large cupule seen from sibove. Fornuition and locaUty: Tertiary (Miocene). Bridge Creek, Oregon. DKHCUIITIONS OF SPEC^IKS. 78 QuERctJH roBiACEA Newb. PI. XIX, llgH. 1-3; XX, flg. 6. Bo8t. Journ. Nat. Hist., Vol. VII (1803), p. 821. "Leaves lanceolate, lonff-jxtinted, aeute, wedge-shaped at ])ase, decur- ront on the petiole; lufirgins entire, or rarely ht'aring a few acute teeth toward the Huminit; nervation strongly marked; niidril) strong; lateral nerves numerous, subparalh^l, hunu^liing luul inosculating at th(; summit." This is one of the willow oaks represented among recent species by Q. imbricaria, etc. The figures given illustrate the variations of form exhibited in the collection. From tliese it will be seen that, with the general character of (j. chloropltjilla Ung. and Q. vhcna IJng., it is distinct from both, the first being rounded above and with finer nerves, the second larger and nan'ower, with a nervation Hiier mid closer and the summits of the lateral nerves more distinctly and regularly united. Formation and locality: Creta(!eous (Puget Bound group), (^hucka- nutz, near Helhngham liay, Washington. QUERCUS DL'"'A Newb. PI. XXXVII, flg. 6. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 506; Ills. Cret. and Tert. PI., (1878), PI. XX, flg. 5, under Fhyllitefi cupanioideti. "Leaf ovoid in outline, inisyinmetrical; margins .strongly and remotely toothed; teeth subacute or obtuse; nervation delicate; midrib flexuous; lateral branches, about six on a side, somewhat waved, branched, iwd interlocking, and terminating in the marginal denticles; surt'ace smooth, consistence prol)ably somewb.at t t>riaceous." Collected by Dr. F. V. Ilayden This is a strongly marked leaf wliicli most resembles that of some of the live oaks. The texture was evidently leathery, the surface sniooth; the nervation is tluit of Quercus or Ilex, as well as the marginal dentation. The species with which it may be compared are Q. aspera Ung. (Clilor. Prot., p. 108, PI. XXX, figs 1-3), Q. i?H67//i Web. (Paheontogr. (1852), p. 171 [57], PI XIX [II], tig 4), and Q ilicoides Heer (Fl. Tert. Helv., Vol. II, V *•, IMAGE EVALUATION TEST TARGET (MT-3) 1.0 I.I L£]28 |2.5 ■50 "^^ Miim ^ lis 12.2 i 1^ 12.0 1.8 L25 lU. ill ''^ ' •m 6" — ^ — ► V] v] ^;; o^ ^^>' v^ 7 /(^ Photographic Sciences Corporation ^s^ o;^k ^?:^ 23 WEST MAIN STREET WEBSTER, N.Y. 145M (7K) 873-4503 ! V Hi ^ "f'*^ 1 mm 74 THE LATER EXTINCT FLORAS OF NORTH AMERICA. '*iM, p. 55, PI. LXXVII, fig'. 16); but from all these it may be distinguished by its coarse, generally obtuse, marginal denticles. Formation and locality: Tertiary (Eocene?). Tongue River, Montana. QuEKCus ELLiPTiCA Newb. PL XVIII, fig. 1; XX, fig. 3 Boat. Journ. Nat. Hist., Vol. VII (1863), p. 523. "Leaves elliptical or ovate, rounded or somewhat wedge-shaped at base, pointed above; margins entire. Surface smooth, consistence thick and leathery; nervation strong; lateral nerves numerous, diverging at a large angle, ^alightly arched upward, often sinuous, forked and anastomosinp* above." In its nervation this species resembles several of the laurel-leaved oaks already described from the Tertiary rocks of Europe, such as Q. ncreifolia, Q. Hev.ii, Q. elaena, etc., but is distinguishable from all these and other otherwise similar species by its broad elliptical or ovate outline. The margins in the specimens before us are apparently entire, but they are probaM" sometimes toothed, as in most allied species. Formation and locality : Cretaceous (Puget Sound group). Chuckanutz, near Bellingham Bay, Washington. QuEBCUS Fi,Exuo8A Newb. PI. XIX, flgs. 4-6. Bost. Journ. Nat. Hist., Vol. VII (1863), p. 621. "Leaves i to 6 inches long, lanceolate, often more or less curved, pointed, acute, narrowed at the base to the petiole; margins somewhat irregularly sinuate-dentate; nervation strongly marked, lateral nerves forked and anaLitomosing at the summit." This is apparently one of the chesnut oaks, but has not the reguhirity of nervation which characterizes most of that group, of which Q. castanea may be taken as a type. Among fossil species there are many to which it bears considerable reseinblance, such as Q. Gaiidini Lesq., Q. Gmelini Ung. Q. urophylla Ung., etc., but from these and all others described it seems to be sufficiently distinct. In Q. Gaiidini the secondary nerves are curved and run along DESCRIPTIONS OF SPECIES. 75 the margins. In the other species mentioned they are less numerous and more curved and the mai'ginal teeth are coai-ser. Formation and hraHtf/ : Cretaceous (Puget Sound group). Chuckauutz, near BelHngham Bay, Washington. QuERCus GRACILIS Newh. PI. LXVII, fig. 4. Proc. U. S Nat. Mus., Vol. V (March 21, 188.'J), p. 504. " Leaves naiTow, lanceolate, long-pointed, acute, wedge-shaped at the base; margins set with remote, low, acute teeth ; nervation regular and fine; nerve branches fifteen to twenty on each side, curved gently upward, and terminating in the marginal toeth." Collected by Dr. J. S. Newberry. This is another of the lanceolate, seirate-leaved oakK of which Q. Dry- meja Ung. (Chlor. Protog., p. 113, PI. XXXII, figs. 1-4) may be considered as a type. It differs from that species, however, in its more crowded nervation, smaller teeth, and shallower sinuses. In the figure given the nervation is represented as too strong, and the marginal teeth are not sufficiently } cafe. Several very beautifully pre- served specimens are before us, which give a very exact and complete vieAV of it, and its resemblance to Q. Drymeja is so strong that if it had occurred in the same horizon and locality there would have been no pro- priety in separating them; but in inldition to the differences that have been mentioned, the geological horizdns are so different that the probability of finding any identity of species is extremely small. For the present, therefore, it has been thought best to regard this as distinct from the great number of leaves that have been in North America and Europe referred to Q. Brymeja. Formation ami locality: Cretaceous (Montana group). Point of Rocks, Wyoming. QuEBCus Gronlanuica Heer. PI. LI, ag. ;{, in part ; LIV, figs. 1, 2. Fl. Fobs. Arct., Vol. I (1868), p. 108, PI. VIII, fig. 8 ; X, figs. ;3, 4; XI, fig. 4; XL VII, fig. 1. Note. — So identified by Dr. Newberry, as indicated by memorandum on the margin of the plate and on specimen label. — A II. Formation and locality : Tertiary (Miocene). Cook Inlet, Alaska. i ■■ : 'fl 76 THE LATER EXTINCT FLORAS OF NORTH AMERICA. . • V ; -, '^^ . >^ QUERCUS LAURIFOLIA Newb ■ .;* ri;, v,v- • "^ H. LIX, fig. 4 ; LX, fig. 3. -^y^^^ Pioc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 505. "Leaves petioled, lanceolate, 6 inches in length by 1^ inches in width, equally narrowed to the point and petiole; marj^ins entire, or faintly toothed, or undulate; nervation regular; mic'iib strong, straight, lateral branches, about ten pairs, arching gently upward, terminating in the margins." Collected by S. M. Rothhammer, on the expedition of Gen. Alfred Sully. Although reluctant to add one more to the large number of ill-defined species of oak which have been established upon the fossil leaves brought from the far west, this seems to be inevitable, inasmuch as the leaves before us are in all probability those of Quercus and distinct from any hitherto described. The most striking feature in these leaves is tneir elegant lanceo- late and symmetrical form, broadest in the middle and naiTowing regularly to the pointed base "nd summit. The craspedodrome nervation and the undulate or faintly toothed margins seem to separate these leaves from Laurus and connect them with the oaks. The figures given but imper- fectly represent the leaves in question, but it is hoped that the description will permit their identification when found. Formation and locality: Tertiary (Eocene I). Burned shales over lignite beds, Fort Berthold, Dakota. ■ V QUEKCU.S PAUCIDENTATA Newb. ' PI. XLIII, fig. 1. Proc. U.S. Nat. Mus., Vol. V (March iil, 1883), p. 505. "Leaves oblanceolate, 6 inches in length by 1 J in breadth, narrowed tc the base, sometimes unsymmetrical, long-pointed, and acute at the summit; margins entire below, coarsely toothed above; nervation strong and regular, about ten branches on each side of the midrib, which curve upward, festooned balow, terminating in the teeth above." Collected by Rev. Thomas Condon. No complete specimens of these leaves are contained in the collection, DESCRIPIIONS OF SPECIES. 77 the one figured being the best. The texture was evidently thick and leathery. The apex is eiToneously represented in the figure, as subsequent development of the specimen shows that it terminates in a long-drawn acute point. Among described species this may be compared with Q. Nimrodis Ung. (Foss. Fl. Sotzka, p. 163 [33], PI. XXXI [X], figs. 1-3), and Q. Meriani Heer (Fl Tert. Helv., Vol. II, p. 53, PI. LXXVI, fig. 12), but in those species the marginal teeth are stronger and are not, as in this, confined to the summit. The substance of the leaf of the specimens before us was evidently very thick and leathery. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. QuERCUS SALiciFOLiA Newb. PI. I, fig. 1. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 24; Ills. Cret. and Tert. PI. (1878), PI. II, fig. 1. . ** Leaves petiolate, smooth, thick, entire, lanceolate, abruptly pointed at both ends; medial nerve strong, sti-aight, or more or less curved; secondary nerves of unequal size, strong near their point** of origin, becoming fine, flexuoua, and branching as they approach the margins of tlie leaf, where some of them inosculate by irregular curves, while others terminate in the margins." Collected by Dr. F. V. Hayden. This species differs considerably in its general aspect from the willow- like leaves with which it is associated, and must have been much thicker and smoother. The midrib is very strong, terminating below in a thick, but short, petiole. The lateral nerves are much less uniform and i-egular than those of the leaves to which I have referred. They are at first strong, but SOO-. dirainisli, and many of them. extend but halfway to the margin, the others being unequally curved and branching irregularly or anas- tomosing with each other. The finer details of nervation are not given in the specimens before me, and perhaps inore ample material will show that our fossil should not be regarded as a Quercus, but, as far as its characters ax-e given, they agree best with those of that genus. The texture of the leaf was evidently th^ck and its surface glossy, more so than in any Salix now living; the nervation, too, is more of the oaks than willows; the alternation of larger with smaller secondary nerves, all f ft! 78 THE LATER EXTINCT FLORAS OF NORTH AMERICA. flimiiiisliing rapidly and irregularly branched and flexiious above, are cliaractera common to the leaves of all the willow-oaks. Some leaves of the living Q. imbricaria would closely resemble thes^e if "ossilized in the same manner. In the Lauracete with lanceolate leaves the nervation is generally much more exact and regular than in the specimen before us, the side nerves being generally curved gracefully and more or less uniformly upward, their extremities anastomosing, or, mora rarely, reaching tlie margin. If the fine reticulation of the tertiary nerves was distinctly visible there would perhaps be little difficulty in determining with a good degree of certainty the generic relations of this fossil. In the oaks this reticulation is very fine, the areohc of rather uniform size and quadrangular or polygonal, about as broad as long. In the willows the meshes are larger, more irregular, and more or less elongated. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska. QuEBCus SIMPLEX Newb. PI. XLIII, fig. 6. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 505. ' "Leaves lanceolate, long-pointed, naiTowed, and slightly rounded at the base; margins entire; nervation fine and regular." In collections made by Rev. Thomas Condon at Bridge Creek, Oregon, are numerous leaves similar to that described above. Some are larger, but all present the same characters. The form of the leaf is similar to that of Q. consimilis, with which it is associated and from which it diff'ers only by its entire margin. Since in that species the margins are sometimes nearly enti' >, it is possible that in the leaves before us that character may be inttmsiiied, giving an entire variety. Of this, however, proof can only be obtained by further collections. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. . QuEKcus siNUATA Newb. PL XIII, fig. 1. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 27. "Leaves small, obovate in general outline, narrowed to the petiole, or slightly decurrent; margins deeply lobed, lobes rounded, broader than the DESCRIPTIONS OF SPECIES. 79 sinuses that separate them, three nearly equal on either side, summit broadly rounded or obscurely lobed, often oblique; nervation strong' and simple, midrib straight or slijrhtly flexed, giving off lateral branches, which run to the margins of each lateral lobe." The general form (jf this leaf is much like that of our living Q. ohtusiloha, though it is smaller and more symmetrical. Among the many fossil species which have been described there is none which approaches this very closely, most of them bearing either simple, entire leaves, or toothed, rather than lobed ones. Formation and locality: Cretaceous (Dakota group). Banks of Kio Dolores, 'J tab. - QuEEcus SuLLYi Newb. . ' ' PI. LX, fig. 2. Proc. U. S. Nat. Mns., Vol. V (March 21, 1883), p. 506. "Leaves ovate, pointed, wedge-shaped, or rounded at the base; mar- gins sot remotely or closely, with acute, spiny-p(Mnted teeth; nervation strong, somewhat flexuous; lowei pair of lateral nerves giving off numerous branches; midd]-> and upper pairs simple below, forked at the summit." Collected by S. M. Rothhammer, on the expedition of Gen. Alfred Sully. :; ,. . The characteristics of these leaves are but imperfectly shown in the figure, but the general form, margin, and nervation can be very well made out from the numerous fragments contained in the collection made by the Sully Expedition. It is evident that we have here one of the Ilex-like oaks, and indeed it may be a question whether it is not rather a holly than an oak. The leaf was generally unsymmetrical, the nervation strong but flexuous, the surface roughened by the tertiary nerve branches. In a general way these leaves resemble those of the common evergreen oak, Qiiercm agrifolia of California, but the spines of the margin are smaller and more numerous, the leaves more elongate and pointed. It is evident, however, that the tree which bore them belonged to the same group of oaks. Formation and locality: Tertiary (Eocene!). Burned shales over lig- nite beds, Fort Berthold, Dakota. I a 80 THE LATER EXTINCT FLORAS OF NORTH AMERICA. Order ULMACEiE. Ulmus SPECI08A Newb. PI. XLV, figs. 2-5, 7, 8. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. .507. Ulmus psemio-Aviericana Lesq., Cret. and Tert. Fl. (1883), p. 249, PL LIV, fig. 10. "Leaves 4 to 6 inches In length by 2 inclies in width, ])etiolecl, long- ovoid, or elliptical in outline, pointed at sununit; margins cosirsely and doubly sen-ate; nervation strong, regular, fifteen to twenty parallel branches one either side of midrib. Fruit large, 27 centimeters in diam- eter, subcircular, einarginate." This large and fine species of elm is represented by hundreds of specimens in the collection made by Rev. Tiiomas Condon, and while most are imperfectly preserved, there iire some which show all the details of form and structure. The general aspect of the leaves is not mdike that of U. Bronnii Ung. (Chlor. Prot., p. 100, PI. XXVI, figs. 1-3), but is fully twice as large and coarsely T"nd dou])ly h rrate. The leaf represented by fig". 8 is one of many which occu'; in the collection, all presenting nearly the same character; that is, they are smaller than those just described, with nmch finer marginal dentation. That dentation is, however, double and like that of the lai-ger leaves, though less ])ronounced, and there are no characters presented by these leaves which would justify us in regarding them as representing a distinct species. For the present, therefore, it has been thought better to leave these as small forms of U. speciosa. Among living species U. fulva approaches closer to those now under consideration than any other, and the differences between the fossil and living forms are not so great but that we may very well regard one as the progenitor of the other. In U. fulva the leaves are smaller and relatively bi'oader, being ovoid in outline, but the character of the marginal dentation and of the nervation is essentially the same. The samara, represented by fig. 7, is 8upj)osed to be the fruit of the large elm described above. It is very similar in size and character to the fruit credited to U. Bronnii by Ung., but is some vhat broader. It has not yet been distinctly coimected with the leaves we have called U. speciosa. DESCRIPTIONS OF SPECIES. 81 but there seems to liave been no other tree growinj^ hi the locality whei'e these specimens are found of which this could well bo the fruit. The fruit of U. ftilva has nearly the same form as this, but is only about half as large, while tho fruit of U. Americana is still smaller and is obovoid and cilliated. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. Planera ceenata Newb. PI. LVII, flg. :3. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 508. "Leavts oblong, ovate; short petioled; 5 centimeters long by 25 millimeters wide; base rounded; summit blunt-j)ointed; margins coarsely crenate; nervation simple, delicate, six simple branches on each side of the midrib terminating in the crenations of the margin." Collected by Dr. F. V. Hayden. In general aspect these leaves resemble some of the varieties of P. Ut.geri, but ditfer from them in the ci-enate mai-gins, the lobes being fewer and all rounded. In these respects it differs also from the species described in this volume, P. longifoli'i Lesq. (PI. LVIII, fig. 3), P. variabilis Newb. (PI. LXVI, figs. 5, 6, 7), and P. nervosa Newb. (PI. LXVII, figs. 2, 3). Formation and localiti/ : Tertiary (Eocene f). Tongue River, Montana. Planera lo>'gifoua Lesq. PI. LVIII, fig. 3. Hayden's Ann. Rept., 1872 [1873], p. 371; Tert. Fl. (1878), p. 180, PI. XXVII, figs. 4-6. Note.— So identified and located by Dr. Newberry, as indicated by memoran- dum on margin of plate. Further information lacliing. — A. H. Formation and locality : Tertiary (Miocene). Florissant, Colorado. Planera microphylla Newb - PI. XXXIII, figs. 3, 4. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 55; Ills. Cret. and Tert. PL (1878), PL XVI, figs. 3, 4. ; ,: .v ' ^ -r^' ■■■■"■■. '■'^^^--'h ,.:>■: ■ "Leaves very small, ovate-lanceolate, generally unsymmetrical, curved or falcate, cordate at base, pointed but rarely acute, coarsely and bluntly MON XXXV 6 82 TIIK LATKll EXTINCT FLORAS OF NORTH AiMERICA. '«k U," tctothed; nervation strong; lateral nerves diverj^ing at an angle of about .50 (legrecH in five to six pairs branching toward the Huminit, and inoH(!ulating along the margins; tertiary nerves strong, leaving the sc^condarios nearly at right angles, much branched and anastomosing to form a coarse and irregular network." Collected by Ur. F. V. Hayden. In its general form this leaf has a striking resemblance to Planera Ihifieri Ett. (Abhandl. k. k. geolog. Reichsanstalt. Wien, Vol. II (1861), Foss. Fl. Wien, \^. 14, PI. II, figs. r)-18), Wmus Zelkniue folia Ung. (Chlor. Prot., p. 94, PI. XXIV, figs. 7-13; XXVI, figs. 7, 8), but it is apparently con- siderabl}' smaller, narrower, and more coarsely toothed. Formation and locality: Tertiary (Fort Union group). Fort Union, Dakota. Planera nervosa Newb. PI. LXVII, figs. 2, 3. Proo. U. S. Nat. Mus., Vol. V (March 21, 1883), p. fi08. "Leaves ovate or lanceolate, pointed, wedge-shaped, or rotmded at the base, petioled; margins set with coarse, appressed teeth; nervation strong, crowded, regular; lateral nerves simple, parallel, terminating in the teeth of the margins." Collected by Dr. C. A. White. The most striking feature in these leaves is their strong, crowded, reg- ular nervation, from thirteen to nineteen nearly equidistant nimple nerve branches issuing from either side of the midrib. The nervation is equally regular in 7'. lonf/ifolia, Lesq., Tert. Fl., p. 189, PI. XXVII, figs. 4-6; this volume, p. 81, PI. LVIII, fig. 3, but is lighter, and the marginal dentation is coarser, the teeth more obtuse. Fig. 4, on Lesquereux's plate cited above, resembles more the leaves before us and apjiarently belongs to a species distinct from the other two leaves with which it is there associated, possibly to this one. The leaves of I', lonffifolia are found in great abundance at Florissant, Coloi'ado, and they are so much alike that there is no difficulty in separating th jm from other described species; while in the localities where the leaves of P. nervosa occur there are none which have the few long, horizontally out teeth of P. lonether for the presetit. Foniuitioti and toculitif: Tertiary (Green River groiij)). Green River Station, Wyoming. Oeltis parvikolia Newb. PI. LIII, Hg. 6. Pr(.c. U. S. Nat. Mus., Vol. V (Miircli 21, 1883), p. 610. " Leaves Huiall ; ohlong-ovate in outHne; rounded and unsymmetrical at thi' base, pointed at the summit; in-'-gins, except at the base, coarsely dentate; nervation sparse; two jjrincipal branches on each side of midrib, one pair springing from the base and throwing off branchlets, another strong pair issuing from the midrib at the middle of the leaf, other delicate branches given off near the sununit." Collected by Dr. F. V. Hayden. In its general aspei .', as well as its details of structure, this leaf very closely resembles C. AiislraUs, differing from our living C. occidentalis, -is well as from the fossil species that are foui d in the Tertiary beds of this country by its simpler nervaiion, its smaller size, and the relatively coarser seiTation of the margin. Formation and locality: Tertiary (Eocene f). Tongue River, Montana. Order MORACE/B. FicuB (?) Alaskana Newb. PI. LI, flg. 1 ; LII, fig. 1 ; LV, figs. 1, 2. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 512. "Leaves large, reaching 8 to 10 inclies in length and breadth; trilobed, generally unsymmetrical; lobes pointed, usually obtuse; margins entire or locally undulate; nervation strong, conspicuously reticulate; principal nerves, three, giving off branches, which divide near the margins, some-' times connecting in festoons, sometimes craspedodroine; tertiary nervation forming a coarse network ..f usually oblong meshes filled with a fine polygonal reticulation; upper surface of th^ leaf smooth and polished, lower roughened by the reticulation of the nerves." Collected by Captain Howard, U. S. N. These beautiful leaves have br»en refeired with much doubt to Ficus. They present considerable resemblance to some of the leaves of Ficus |t#l!t„ DEHCRIFriONS OF SPEt'IFi. H5 tilicr/olin I leer, jMirticuliirly the lobed fonn hIiowii in Fl. Tert. Ilelv., Vol. Ill, p. 183, IM. CUI, fi}>;. 14, uiul the nervation i« wonietinieH Hiniihir, tliouffh ^enerully leH« «liKtin('tly ciinij)to(h'onie. The ditt'ereneeH, however, between general form and nerve structure, is fairly well given in the figures, ancJ no one having seen them v ill have difficult}^ in recognizing the fossil. The refei'ence to the genus Ficus wants the confirmation of the finiit before it can be accepted as established, but among all the leaves with which these have been compared there ai'e none to which they bear so gi'eat resemblance as t( these of the Moraceaj, and especially with those of the leaves of Ficus and Artocarpus. The nervation is stri'angly like that of a number of species of Ficus, such as F. seabriuacula, F. opposififolla, F. Roxhirghiana, F. sycomorus, and perhaps to none more than to that of the connnou fig, F. Carica. Hence, with regret in adding to the already large nuniber of ill-defined fossil species of Ficus, it has seemed best to provisionally refer these leaves to that genus, giving them a place to which, without the evidence of the fruit, they are apparently as much entitled as any others. Sometime the fructification will be found, and then all doubt will be set at rest. There is good evidence that the genus Ficus was well represented in tho luxiuiant, warm temperate or subtropical flora which ])revailed over so much of North America during the Tertiary age, as it is now in the forests of tropical and subtropical America. At the same time it is necessary to say that of the large number of species of Ficus more than 20, which have been described as occurring in our Tertiary rocks, the identification has been in many instances based upon evidence that must be regarded as unsatisfactory. One of the most striking characters of these leaves is formed by the DESCRIPTIONS OF SPECIES. 87 reflexed 8tii)ule-like lobe at the base nf ihe leaf. This ia a feature that it has in common with some species of Platamis, especially Platanus hasilobata Ward (Synopsis, Flora Laramie Group, Gth \nn. Rept. U. S. Geol. Surv. for 1884-86 [188G], Pis. XLII, XLIII), and somethiufr of the kind is frequently found in strong growing shoots of the living Platanus occklentalis. As I have said in ray description of Platanus nohilis, there are some char- acters in the leaves of that tree which raise the question whether it was a true Platanus, and yet my reference of it to that genus has been contii-med by Sir William Daws an and Dr. Lester F. Ward. The former has found leaves which he considerij those of P. nohilis having this basilar lobe, and he has suggested that Dr. Ward's P. hasilohaca should be named P. nohilis var. hasilohttta. I should not be surprised if hi the light of more material, P. nohilis and the species now under consideration should be united in a new genus; but without additional n-,aterial such a step would be hardly wise. Formation and locality : Tertiary (Miocene). Bridge Creek, Oregon. FiCUS MEMBRAXACF.A Newb PI. LIX, fig. 2. Pi'oc. U. S. Nat. Mu8., Vol. V (March 21, 1883), p. 51J. "Leaves sessile, 4 to 6 inches in I'^ugth, by 2J to 3 J in width; ovate, abruptly and usually blunt-pointed, naiTowed to the base, generally unsymmetrical, margin entire, nervation delicate, open, camptodrome; ten or more branches given off on either side of the midrib, curving upward, and forming a festoon near the margin." Of these leaves there are (piite a number in the collection from Alaska, made by Captain Howard, and such as exhibit considerable diversity of form, as will be seen by the figures. That shown on PI. LIX is imper- fect and imperfectly represented; it is smaller thrai the average and more pointed, and the base should be prolonged and narrowed. The reference of these leaves to Ficus is provi.sional and can not be insisted upon. The nervation is that of this genus, and a considerable resenibianco is shown to those described by Lesquereux (Tert. Fl., p. 194, PI. XX\ III, figs. 9-12) under the name of F, ohlanceolata, but they are larger, broader in form, and the nervation is nmch more open. 'I'he texture of these leaves was evidently thin and membranous, a character plainly shown by 88 THE LATER EXTINCT FLORAS OF NORTH AMERICA. the contrast in appearance which they present to oaks, poplars, prunes, etc., with which they are associated; this is also indicated by the delicate, open, and flexuous nervation. Formation and locality: Tertiary (Miocene). Cook Inlet, Alaska. FiCUS PLANICOSTATA Losq.? PI. XLVI, fig. 1. Hayden's Ann. Rept.,1872 [1873], p. 393; Tdrt. Fl. (1878), p. 201, PL XXXI, figs. 1-8, 10-12. The leaf here figured is hardly sufficient for satisfactory determination ; it is imperfect at the summit and throughout part of the margin ; however, the insertion of the petiole and the nervation give it characters which are separated widely from any other leaves with which it is associated in the collection. The petiole is broad, and is inserted obliquely in the base of the leaf The nervation is beautifully camptodrome, the branches of the basal pair of lateral nerves, as well as the summits of the lateral nerves above, forming a most beautiful and regular festoon. This is essentially the nervation of F. planicostata, and although the specimen is much smaller and narrower than the average of the leaves ascribed to that species, I have thought best to refer it doubtfully to this place until further material will permit the definitive settlement of the question. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. Ficus RETICULATA (Lesq.) HoUick. PI. XII, figs. 2, 3. LdurophyUum reticvlatum Lesq. Hayden's Ann. Rept. 1872 [1873], p. 426; Cret. Fl. (1874), p. 76, PI. XV, figs. 4, 5. Ficus laurophyllum Lesq. Hayden's Ann. Rept. 1874 [1876], p. 342, PI. V, fig. 7. Ficm laurophyUa Lesq. Cret. and Tert. Fl. (1883), p. 49, PI. I, flgs. 12, 13. Quite a number of specimens of these very distinctly marked leaves are contained in the collection received from Mr. Sternberg from Fort Harker, and still larger and finer ones since obtained through other channels show that the leaves sometimes attained a size considerably greater than that represented in fig. 2, but it was as wide and much longer. All these are alike in si.owing a smooth and polished surface, a thick, leathery texture, ■■1 m m DESCRIPTIONS OF SPECIES. Cret. ?. 7. eaves Fort innels than these xture, a remarkably strong, straight, smooth midrib; pimiate, deHcate, irregularly spaced, branched camptrodome lateral nerves. Except that they are more lanceolate and pointed, these leaves would hardly be distinguishable from those of Ficus elastica if fossilized. In form, exactness of outline, and strength of midrib, they resemble the leaves of Nerium, but the nervation is quite different. Formation and locality: Cretaceous (Dakota gi'oup). Fort Harker, Kansas, and Blackbird Hill, Nebraska. . . Protofics iN.fiQUALi8 Newb. PL LVIII, flg. 2; LX, fig. 1. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 612. "Leaves 4 to 5 inches long, by 3 inches wide; oval, pointed at th3 summit, narrowed and rounded at the unsymmetrical base; raai'gins entire or in part undulate; nervation strongly defined but open; about seven b'*anches on each bide of the midrib, the lower two or three giving off branches below, the upper simple, arched upward, terminating in the margin, the intervals between the branches spanned by numerous, generally simple tertiary nerves." v Collected by Dr. F. V. Hayden. j The general aspect of these beautiful leaves is not well given in the figure. They seem to have been thick and polished above, roughened below by the strongly marked nervation. Thry resemble in many respects the leaves of Protoficus, described by Count Saporta, from the travertines of Sezanne, as will be seen by comparing his figure of Protoficus crenulata (Fl. Foss. Sezanne, p 67, PI. VI, fig. 5). Our leaves differ from that, however, in this, that the base is unsymmetrical, the margin la entire or undulate, and the nervation is craspedodrome. This latter character is not common, but is not unprecedented among the figs, the leaves of several species of which bear considerable resemblance to these, e. g., F. sycomorns. It will also be noticed that the leaves under consideration are not unlike those described by Lesquereux under the name of Ficus planicostata van Goldiana (Tert. Fl, p. 202, PI. XXXIII, figs. 1-3), but differ froiri them in the inequality of the base and the details of nervation. It seems highly probable, however, that they should form species of the same genus. Formation and hvality: Tertiary (Eocene?). Tongue River, Montana. Tjpp '*H; -,.; 90 THE LATER EXTINCT FLORAS OF NORTH AMERICA. Order ARISTOLOCHIACEiE. Abistolochia cordifolia Newb. PI. XXXIX ; XL, fig. 7 ; LX, fig. 4. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 18(58), p. 74; Ills. Cret. and Tert. PI. (1878), PI. XXII, under CaMpa cmssifolin; XXV, fig. 7. Catalpa rrassifoUa Newb. Op. clt. , p. 50. "Leaves large, fleshy, ovate, heart-shaped at base, pointed above, sometimes misymmetrical; margins entire; nervation strongly developed; midrib straight or flexuous; lateral nerves about seven pairs; lower pair strongest, not reaching the middle of the leaf, giving off each about four bi'anches on the lower side, of which the lower ones spring from the base of the laterals and are much branched; upper laterals branched at their summits, branches uniting to form a festoon somewhat remote from the margin; tertiary iiervation invisible." • • Collected by Dr. F. V. Hayden. These leaves are referred in the Annual Report of the New York Lyceum of Natural History with hesitation to Catalpa, which they consid- erably resemble in form and nervation; bixt a large number of specimens submitted to inspection since the description was written exhibit characters which lead me to suspect that they represent a species of Aristolochia. This additional material shows the leaves to have been sometimes very large, more than 1 foot in diameter, broadly cordate in outline, often misymmetrical. Fig. 4, given on PI. LX, exhibits the broader and more rounded form and the open festooned nervation; but this is scarcely more than one-third of the linear dimensions of the largest. The texture of the leaf seems to have been very thin, the nervation is sparse and open, though the principal nerves musi have been somewhat fleshy. There are also associated with these lea\ es slender tortuous stems that seem to be portions of a vine. Taking the ie facts into consideration, I have been led to refer these leaves to Aristolochia and to compare them with the large, broadh' cordate leaves of A. sipho. Future collections will undoubt- edly furnish material which will render it possible to speak with confidence in regard to tlie generic relations of the plant. Formation and locality; Tertiary (Eocene ?). Hanks of Amil Creek, Dakota. ' ''''■/■"'■-'--'"'-. .""""f~ --—-•--— ^. — -^ ^.—-^—^^.^ DESCRIPTIONS OF SPECIES. the reek, Order NYMPHiEACEiE. * Cabomba(!) gracilis, Newb. PI. XXII, fig. 1; XXIII, flg. 1. ' Cabomba gracilis Newb. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 514. Ills. Cret. ami Tert. PI. (1878), Fl. VII, fig. 1, under "aquatic rootlets of Equisetum"; VIII, fig. 2, under "Equisetuin." "Stem slender, smooth; submerged leaves set at intervals of half an inch to an inch apart on the stem, opposite dichotomously and frecjuently branched, segments narrowly linear, or filiform, flattened, smooth, trun- cated, scarcely distinguishable fi-om the stem and leaves of C. Caroliniana." A large number of intertwining, smooth, narrow stems, with opposite, r.ianv-forked, linear leaves, are contained in some of the collections made from the Tertiary beds of the upper Missouri by Dr. F. V. Hayden. They were at first regarded as aquatic rootlets, but an examination of a multi- tude of well-preserved specimens shows that they are leaves and not roots, and comparing them with living plants they are found to imitate with a most perfect exactness the stems of leaves of Cabomba. The smaller speci- mens, like that figured, accurately represent the filiform variety of Cahomlm Caroliniana of our Southern States. Mingled with these stems and leaves are obscure fragments of what may have been the peltate leaves, since some of them show a sort of umbilicus as though the point of attachment of the stem. Had there been but one or two of these specimens corre- sponding to the above description, their nature would have been left in so much doubt as to render it unwise to call attention to them; but occurring as they do in connection with other aquatic plants in very large numbers, and having a definite and invariable character, the stems smooth and lacking all the characteristics of creeping root stalks or acjuatic roots, the leaves expanded, each pair in its own ])laue, and the pairs alternating, show that we have here to do with the stem and foliage of an aquatic plant of a marked and peculiar character. To this character no living plant seems to approach so nearly as Cabomba, and here the resemblance is 80 close that the probabilities become very strong that the reference to that genus will be confirmed hereafter by the discovery of the floating leaves and flowers. Formation and locality: Tertiary (Fort Union group). Fort Union,, Dakota 92 THE LATER EXTINCT FLORAS OF NORTH AMERICA. Cabomba INERMI8 (Newb.) HollicL PI. XXII. fig. 2; XXIII, fig. 2. PsUotum inerme, Newb. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 38; Ills. Cret. and Tert. Pi. (1878), PI. VII, fig. 2, under "aquatic rootlets of Equisetum " ; VIII, flg. 3, under PsUotum inerme. Associated with the last -described species are a large number of dichotomously forked, flattened leaves, which are imperfectly represented in the figure given. These have all the general character of the smaller ones, but are many times larger — 5 to 6 inches in length — so large, indeed, that it seems impossible that they should have appeiiained to the same species. A distinct and significant name has therefore been given to them.' These leaves are flattened and smooth, and have precisely the aspect of the broader leaves of the living Cabomba. Groups of these springing from a common base were formerly likened to Psilotum, and described in the Later Extinct Floras as P. inerme; but the study of additional material has led to the conviction that the probabilities are very much stronger that we have here a representation of a species of Cabomba. The isolated position of Cabomba in our modem flora is an indication that it is a relic of the past, and it was to be expected that in the sediments of the ancient fresh-water lakes of the far West, where the leaves of palms are preserved, affording evidence of a warm climate like that of our Southern States, traces of t)ie former existence of Cabomba should be found. With some of the groups of leaves of the plant now under consideration are imperfect traces of fructification which in their general character confirm the reference to Cabomba, and yet are not sufficiently well preserved to thoroughly estab- lish the botanical affinities of these plants. It is to be hoped that attention being called to this peculiar group of fossils, they will be specially sought and found in the Fort Union beds in such condition as to establish beyond question their botanical affinities. In fig. 2, PI. XXII, a pair of leaves is represented which are iutenne- diate in size between the two forms described, and these are eiToneously shaded in such a way as to give the impression of rounded stems; in fact, these leaves are perfectly flat and correspond in form and structure to the ' Dr. Newberry's manuscript name for this species is C. grandis, but under the accepted rules of nomenclature the original published specific name inerme must stand.— A. H. DESCRIPTIONS OF SPECIES. M others, but the plant was evidently somewhat decayed and mutilated before fossilization. Taking the series of figures now given and referred lo Cabomba, they might be supposed to represent three species or different phases of one, but the very lai'ge number of the smallest form contained in the collection, and the close coiTespoudeuce in size and fo m exhibited by them, seems clearly to justify the conclusion that they represent but a single species, while the larger form also generally exhibits the same characteristics. The interme- diate size represented in fig. 2, PL XXII, has few representatives in the collection, and hardly affords material for the creation of a distinct species. It has been thought better, therefore, to refer this to the larger one, to which it is most nearly allied in size. Formation and locality: Tertiary (Fort Union group). Fort Union, Dakota. Bbasenia (?) ANTiQUA Newb. PI. LXVIII, fig. 7. Brasenia antiqua Newb. Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 614 (not B. antiqiM Daws., Trans. Roy. Soc. Canada, III, sec. 4, p. 15, 1885 [1886]). "Stems long, flexuous, cylindrical (now flattened)^ smooth, many times branched toward summit, bearing pedunculate spheroidal capitula consisting of numerous club-shaped pods." We have here the remains of an aquatic plant, having the general structure of Brasenia as regards stem iud fruit, but the specimens are too imperfect to enable us to decide with confidence on its botanical relations. No leaves or flowers have yet been found, and the seeds are scarcely sufficient for its classification. Our common water shield, Brasenia peltata, is a very widely disseminated plant, as it is found on both aides of our continent and in Japan and the East Indies. This indicates that it has long been an inhabitant of the earth's surface, and whether the specimen before us can be accepted as evidence of its existence in North Ainerica during the Tertiary, tlie probabilities are strong that Brasenia was an inhabitant of the old lakes of the West and that its remains will be met with. Formation and locality: Tertiary (Green River group). Green River, Wyoming . 'Tjpm V i 94 THE LATER EXTINCT FLORAS OF NORTH AMERICA. Order MAGNOLIACEiE. Magnolia altebnans Heeri PI. V, fig. 6. Nouv. Mem. Hoc. Ilelv. Sci. Nat., Vol. XXII (1860), p. 20, PI. Ill, flgs. 2-4; IV, figs. 1, 2. Note. — So identified, provisionally, by Dr. Newberry, as indicated by memo- randum on margin of plate. Locality probably Blackbird Ilill, Nebraska. — A. H. Magnolia elliptica Newb. n sp. PI. XII, fig. 1. Leaf 6 inches long by 3^ inches broad, elliptical in outline, rounded at the base, acute at the summit; midrib strong and straight; lateral nerves numerous, strong, nearly simple, arched upward, parallel, inoscu- lating near margin (caraptodrome). Collected by Dr. F. V. Hayden. Among described species, this approaches nearest to M. HUgardiana Lesq. of the Tertiary of the Mississippi, but is shorter, broader, more rounded at the base, and more abruptly pointed at the summit. There is some doubt in regard to the age of the strata from which this plant was derived, and it is possible that it is tertiary and is but a phase or variety of the species with which it has been compared. Formation ami locality: Tertiary (Eocene ?). Tongue River, Montana. Magnolia obovata Newb. Ann. N. Y. Lye. Nat. Hist., VoL IX (April, 1868), p. 15. "Leaves large, obovate, entire, thick and smooth; pointed and slightly decun-ent on the petiole; nervation strong; midi'ib straight and extending to the summit; lateral nerves pinnate, set at somewhat unequal distances, straight and parallel below, forked and inosculating above, forming a festoon parallel with the margin; tertiary nerves forming an irregular network of polygonal and relatively large areoles." Note. — As may be seen bj- comparing the descriptions, this species is mani- festly identical with the one described by Dr. Newberry under the name Nyssa vetusta (see p. 125 of this 'i:onograph), and inasmuch as the latter name has priority DESCRIPTIONS OF SPKCIKS. 90 of placo in the publication whore they both originally api)eare(l, the name Mngnnlin oboi'dtd becomes a nomen nudum. How this coukl have escaped Dr. Newlwjrry's atttiutiou or the attention of subsequent workers and reviewers is strange. — A. II. Magnolia botundifolia Newb. PI. LIX, fig. 1. Proc. U. S. Nat. Mus., Vol. V (March 31, 1883), p. 513. "Leaves jietioled, large (8 inches in length by 6 inches in width), round-ovate in outline, rounded or blunt-pointed above and slightly wedge- shaped below; margins entire; nervation open and delicate; four to six lateial branches given oft" from the midrib at remote and in-egular dis- tances, curving gently upward, and forming festoons near the margin." Collected by Dr. F. V. Hayden. • In general form this fine species would seem to be somewhat like M. regalis Heer (¥\. Foss. Arct, Vol. IV, Abth. I, p. 81, PI. XX; XXI, figs. 1, 2) and M. Nordenskiuldia Heer (op. cit., p. 82, PI. XXI, fig. 3; XXX, fig. 1), but with a much more slender and less crowded nervation than the first and a more rounded fonn than the second. A number of specimens in the collection show some diversity of form, and it is possible that the leaf figured is more rounded and less pointed than the average, but unless there should be very great depai-ture from this standard there is little probability of this species being united witli any other. The ner- vation is almost precisely that of the living 3f. acuminata, and there can not be any reasonable doubt that it is a representative of the same genus. Formation and locality: Cretaceous (Laramie group). Fischers Peak, Colorado. '' LiRioDENDRoN Mkekii Heer. ■^, ■':"..■,--'■.?■.•'■ •^;-:: ■:>::■ ■ PI. VI, figs. 5, 6. .•- ■..,_-,-■:,;/;- Proc. Phil. Acad. Nat. Sol. 1858, p. 265; Nouv. Mem. Soc. Helv. Sci. Nat., Vol. XXII (1866), p. 21, PI. IV, figs. 3, 4; Ills. Cret. and Tert. PI. (1878), PI. VI, figs. 5, 6 [fig. 6 under L. 2}rim(Bvum]. Note. — So identified by Dr. Newberry, as indicated by memoranda on margin of plate and on specimen label. — A. H. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska I. i?^^ %' 96 TIIE LATKR KXTINCT FLORAS OF NOU'l'Il AMKUICA. LiUItiDKNUKoN I'KIM.'KVUM Nowb. PI. VI, i\g. 7. Ann. N. Y. Lyo. Xat. Hist., Vol. IX (April, 18(18), p. 12; Ills. Cret. and Tort. PI. (1878), PI. VI, fljr. 7. [Ni)t ninnwl oil plate. | "LeavtiH thrcc'-lobed, upper lobo eiiiar{>;iiiat(), all the lobos roiuulnd; nervation delicate, principal nerve Htraight or slightly cui'ved, terminating in the sinus of the superior lobe; secondary nerves gently arching upward, simple t»r forked near the extremities, a few more delicate ones alternating with the stronger." Collected by Dr. F. V. Ilayden. This leaf is considerably larger than that of L. Meekii Heer, less deeply lobed, and the lobes more broadly rounded. In its general aspect this species approaches nuich nearer the living tulip tree and the Tertiary species of Europe (/>. Procaccinii Ung.) tlian that described by Professor Heer from the collections of Dr. llayden (L. Meekii). The leaves of the former species are, however, generally more deeply lobed and the lobes are acute, but I have collected leaves of L. tulipi/era of small size with all the lobes rounded and in all respects remarkably like that under consideration. On the whole this is so like the leaf of our tulip tree that there can be little doubt that it represents a species of the same genus which grew on our continent at the commencement of the Cretac ous epoch. This is one of the most important facts deduced from the collections of Dr. Hayden, for the genus Liriodendron is now represented by but a single known species, which is confined to North America. During the Miocene Tertiary epoch, however, it formed part of the flora of Europe, as well preserved leaves of a species very closely allied to, if not identical with, the living one grew in Italy, Switzerland, and Iceland. Thus this comes into the interesting category of Magnolia, Liquidam- bar, Sassafras, etc., genera which flourished both in Eurt>pe and America during the Miocene epoch, but which have long since ceased to exist on the European continent. These specimens also teach us the still more interesting truth that Liriodench'on, Sassafras, Magnolia, Quercus, Salix, Platunus, I'opulus, and many others of our living genera date back on this continent to a period long anterior to the dawn of the Tertiary age, and having survived all the '^3 DKSCHIPTIONS OF SPECIES. 97 chaujyes of tuo inciihniliiblo interval uow form the most couspicuouH ele- meiitH in our exi»tinj>' forostH. Formation and localiti/: CretHoeouH (Dakota group). IJlm-kbinl Hill, Nobruska Order BERBERIDACEiE. BintiiKUis aiMPLKX Nowb. PI. LVI, fig. 2. Proc. U. S. Nat. Mns., Vol. V (March 21, 188:1), p. •'•14. "Loavus i)iniiato, with three or more ])airK of leaflets; leaflets ovoid, roiuided or einargiuate at baHC, acute, with two to four large spiny teeth on each side." Collected by Rev. Thomas Condon. This, so far as known, is the first example of the occurrence of a lk'rb(iris in the fossil state in America, and of this we have only a single specimen, tliough tliat is unmistakable in its character. It is evidently allied to li. , both in oxternal form and nervation, botwe«m the liviii}^ and the fortsil phmtH, the diflercnceH being no greater than we might expect to find between HpocieH of the Hame genuH. TIim nor\ation oi' the fossils is stronger and more regular, and the whole aspect of the leaf rallier neater and more symmetrical. With the material already before us we may at least infer that there was living in the American forests of the Cretaceous period a Lauraceoua tree, bearing trilobate leaves, having the general aspect and nervation of those of our Sassafras. The large collections made from the Dakota group at Fort Harker and elsewhere since the above note was written have included a great num- ber of trilobate leaves, which are not separable by any constant and well-mar]:ed character from those which formed the basis of the obovo description, viz, figs. 1 to 4, PI. VI. On these, however, LestpUiroux has established a number of species of Sassafras, namely, S. acutilobum (the form figured on PI. VII, fig. 1), aS'. Harkerianum (shown in our fig. 2, PI. VIII), S. Mudf/ei, (PI. VII, fig. 2) S. ohtusum (PI. VIII, fig. 1), S. subin- tegrifolius (PI. VII, fig. 3), etc. A very large number of beautifully preserved spe mens collected by Mr. Sternberg at Fort Harker, and whi(;h have been submitted to me for examination, show so many connecting links between these different forms that I am quite unable to separate them into distinct species. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska; Fort Harker and Smoky Hill Fork, Kansas. 8a8safra8 cretaceum recuevatum (Lesq.) Newb. -'■-■■■■''•■'■"■'- ■'■'• ■■"■ PI. ly fig. 2. ,. ,.^ Sassafras recu/rvatits L&sq. Hayden's Ann. Ropt., 1872 [1873] p. 424. ,- Platanus recu/rvata Lesq. Cn.!. ¥1 (1874), p. 71, PI. X, figs. 3-5. -'■' ■ -^ -■ Note.— Dr. Newbe^^.y considered this leaf to be a variety of Lis 8. cretaceum, as indicated by a me'uorandum on the margin of the p. ate. — A. H. Formation and /oca^i^j/; Cretaceous (Dakota gi'oup). Fort Harker, Kansas % 100 THE LATER EXTINCT FLORAS OF NORTH AMERICA. CiNNAMOMUM Heebii Lesq. ; , -' PI. XVII, figs. 1-3. Am. Journ.Sci.,Vol. XXVII (1859), p. 361; Trans. Am. Phil. Soc, Vol. XIII (1869), p. 431, PL XXIII, fig. 12 ; Cret. Fl. (1874), p. 84, PI. XXVIII, fig. 11. Guided only by the brief description given by Lesquereux, I can not be positive that the species of Cinnamomuin before us is identical with that procured by Dr. Evans from Vancouvers Island. In Lesquereux's speci- mens the summit of the leaf was wanting, but he conjectures that the lateral nerves extended to tlie point. Among my specimens aro several in which the upper extremity of the leaf is preserved. From these it appears that the lateral nerves terminate in the margin before reaching the point. This would separate it from C. Btichi, aiid would bring it nearer to C. Scheuchzeri or C. lanceolatum. My specimens, however, indicate a larger and thicker leaf than that of either of these species. It would be a matter of no little interest to determine the relations of the specimens of Cinnamomum contained in the Northwest Boundary Col- lection with tliose brought from Vancouver Island and liellingham Bay by Dr. Evans, as that would probably permit us to decide whether the plant beds of Orcas Island should be grouped with those of the mainland or with those of Nanaimo. Formation and locality: Crf^taceous (Puget Sound group). Orcas Ish ad, Washington. Order HAMAMELIDACE.^. LiQUIDAMBAU EuKOP^UM Al. Br. • . PL XLVII, figs. 1-3. v. r / . ■ . L In BuckL Geol. and Mineral., p. 513 (1337). In the collection of fossil plants made by Rev. Thomas Condon at Bridge Creek, Oregon, occur a number of fragments of the leaves of a Liquidambar which I am unable to distinguish from some of the forms of the species known as L. Europmum Al. Br. The leaves are large, five to seven lobed, the lobes ovoid, long-pointed, and finely serrate. A frag- ment of a leaf appanjntly precisely like this is figured by Heer in his Flora of Alaska (Fl. Foss. Arct., Vol. II, Abth. II, p. 25, PI. II, fig. 7), and is referred by him to L. Europceum. The fruit associated with the leaves at Bridge Greek, as represented in fig. 3, is smaller than that of the living DESCRIPTIONS OF SPECIES. 101 Liquidambar of the Atlantic coast of North America, and the capsules are smaller. The loaves of Liquidambar are found generally distributed through the Middle Tertiary of Europe and have been described from many localities. They exhibit a great diversity in size and form, as is true of the living species above refen-ed to, and it is the opinion of Heer and Schimper that this is the descendant of the fossil one. .•;.':' Lesquereux lias described a species of L'quidambar fi'om the Pliocene deposits of Chalk Bluff, California, which he regards as distinct from L. l^uropmum. The largest specimen which he figures has almost exactly the form of those before us, but he says that they are usually small, and three-lobed. Probably this also is to be regarded as only a variety of L. Europceum, and all forms as hardly distinguishable from the living L. styraciflua. This species is quite variable. In northern ]V|[exico the tree and leaves are small and the latter are all three-lobed. In Louisiana the Sweet Gum often forms the greater part of the forest growth; the trunk attains the height of 60 to 80 feet, with a diameter of 2 to 3 feet. The tree grows along the coast as far north as Massachusetts, and has leaves 6 to 7 inches in diameter. They are generally five-lobecl, but I have found on the same tree leaves that were three-, five-, and sevcn-lobed. Formation and locality: Tei'tiary (Miocene). Bri'ige Creek, Oregon. Liquidambar OBTUsiLOBATUs (Heer) Hollick. ^i^!^^.,.,^ PI. V, flg. 4; XII, fig. 4. - '4- ■ -•; r Pliylliles obtusilchatus Heer. Proc. Acad. Nat. Sci. Phila. (1858), p. 266. Acerites pristinus Newb. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 16. Liquidambar integrifoUus Lesq. Am. .lourn. Sci., Vol. XLVI (.luly, 18(58), p. 93; Cret. PI. (1874), p. 56, PI. II, figs. 1-3, XXIV, fig. 2; XXIX, fig. 8; Ills. Cret. and Tert. PI. (1878), PI. V, flg. 4, under Acerites pristinm. This is the leaf first described by Professor Heer, froia an outline ; sketch, in the Proceedings of the Academy of Natural Sciences, Philadel- phia, 1858, page 266, under the name of Phyllites ohtusilobatus. When, in 1808, the Later p]xtinct Floras of North America was published, an imperfect specimen was described by the writer as Acerites pristinus. Subsequently several much better specimens were obtained by Lesque- reux which led him to refer it to the genus Litpiidambar. His descrip- tion is given in American Journal of Science, Vol. XLVI (July, 1868), JF^ 102 THE LATER EXTINCT FLORAS OF NORTH AMERICA. %: page 93, and in his Cretaceoua Flora, page 56, where it is illustrated by numerous figures. Nearly all of these represent somewhat deeply five- lobcd leaves, of which the lobes are pointed and sometimes acute. The figure given on PI. XII of this monograph shows that the lobes may so.-ae- times become broadly rounded. Since this note was written I have found in the Amboy Clays of New Jersey — a formation about on a level geologically with the Dakota group — leaves which I can not distinguish from those figured by Mr. Lesquereux.' All these five-lobed entire margined leaves contrast some- what strongly with those of the living species, and I am disposed to doubt the propriety of referring them to the same genus. The leaves of L. styraciflua are quite variable in size and form, but always have pointed lobes and serrated margins. In Northern Mexico all the "sweet gum" trees have three-lobed leaves, rarely more than 3 inches in diameter, while in New Jersey the leaves are from five to seven lobed and gen- erally from 5 to 6 inches in diameter. In the Puget Sound group a small three-lobed leaf occurs which could hardly be distinguished from these of the Mexican variety of the common species. These, like those of L. Europceus, as figui'ed by Unger and Heer, can not be doubted to bo Liquidambar, but the leaves now under consider- ation seem to me more likely to belong to the group of three- to five-lobed Ai'alias that are so common in the Dakota and Amboy groups. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska, and Fort Harker, Kansas. "^ ^; Order PLATANACE^. Platands A8PEEA Newb. PI. XLII, figs. 1-3; XLIV, fig. 5; LIX, flg. 3. " " Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 509. "Leaves attaining a diameter of 1 foot or more; petioled; rounded at the base, more or less three-lobed, sometimes nearly ovoid; nervation sti'ong, about nine branches on each side of the midrib; margins deeply, and often compoundly toothed." Collected by Rev. Thomas Condon. ' Dr. Newberry probably has refei'ence to Aralia rotundilotxi Newb, Flora of the Amboy Clays, p. 118, PI. XXVIII, fig. 5; XXXVI, flg. » (Mon. U. 8. Geol. Surv., Vol. XXVI).— A. H. 1 m ' i. DESCRIPTIONS OF SPECIES. 103 We hav^e here in the specimens which are figured and otliers similar, representatives of a fine species of Platanus which is apparently distinct from any liitherto described. In general form it most resembles P. Haydenii Newb., and may prove to be only a variety of this species; but the leaves of P. Hatjdenii obtained in Wyoming have only an undulate or bluntly toothed margin; it is well known, however, that this is a character which is exceed- ingly variable, and specific distinctions can hardly be based upon it. How- ever, the marginal teeth shown in figs. 1 and 2, the base and summit of the leaf, are so peculiar in their size and their compound character that without connecting links vV^e should not be justified in uniting these leaves with any others. lu fig. 3 of the plate cited it will be noticed that the dentation at the base of the middle lobe is smaller and more like that in P. Haydciiii, but the margins iii this specimen are so incomplete that they afford information of but little value. Its chief importance is its demonsti-ation of the large size and distinctly trilobate outline of some of tl e leaves of this triie. The leaf figured in PI. XLIV, fig. 5, presents a marked difference of form from those represented on PI. XLII, but the character of the margins is the same, and it seems probable that this is only the ovoid form which the young and some of the mature leaves are prone to assume. Until further liglit shall be thrown on the subject it is safest to consider all the leaves mentioned in this note as belonging to the same species. Formation and locality : Tertiary (Miocene). Bridge Creek, Oregon. Platanus Haydenii Newb. - r , - PI. XXXVl; XXXVIII; LVI, fig. 3. ' w Ann. N. Y. Lye. jcfat. Hist., Vol. IX (April, 1868), p. 70; Ills. Cret. and Tert. PI. (1878), PI. XIX; XXI. "Leaves large, long-petioled, when mature three, perhaps rarely five lobed; lobes nearly equal, long-pointed, acute; on either side of the mid- dle lobe five to eight obtuse teeth; margins of the lateral lobes sinuately toothed to near the base; younger leaves ovate, acuminate, coarsely toothed throughout, except near the base, which is slightly decurrent; nervation strong, radiate from the base, primary nerves three, which are nearly sti'aight, and terminate in the three lobes of the border. Froni the midrib ,M:imWV 104 THE LATER EXTINCT FLORAS OF NORTH AMERICA. spring seven or eight pairs of lateral nerves above the basilar pair; these diverge at an angle of about 35 degrees, are slightly flexed at the base, straight or nearly so above, where they are somewhat truncated, their branches terminating in the marginal teeth. The basilar nerves diverge from the midrib at an angle of about 35 degrees and run nearly straight to the extremities of the lateral lobes. They each give off on the lower side seven or eight branches, of which the second or third is strongest. These are more or less curved and branched, the branches terminating in the teeth of the margin. Fruit two to three lines long, prismatic, clavate." Collected by Dr. F. V. Hayden. V: . This fine species, which is well represented in the collection, is closely related to Platanus aceroides, so common in the Miocene strata of Europe. There are, however, noticeable differenceii, which seem to me to have a specific value. The leaves of F aceroides, though exhibiting a great variety of form, are, I believe, always acutely toothed, while in the specimens before us the teeth are never acute, except those which in the young leaves represent the lateral lobes of the mature form. In P. aceroides also, accord- ing to Heer (Fl. Teit. Helv., Vol. II, p. 71, PI. LXXXVII and LXXXVIII, figs. 5-15), the nervation is more sparse, the angle of divergence of all the nerves greater, the number of lateral branches of the midiib less, and the number of marginal teeth considerably greater. Professor Heer says (loc. cit.) that in P. aceroides the middle lol-o of thr, leaf has two to three denta- tions on either side, while in P. Haijdenii the mature leaf has eight to ten teeth on each side of the middle lobe. The diff"erence before specified in the form of the marginal teeth is very marked and strikes the eye at a glance. In P. aceroides they are few, long, and acute, sometimes even uncinate, while in P. Haydemi they are more numerous, less piominent, and always obtuse, sometimes merely giving a wavy outline to the margin of the leaf. Detached seeds are all that we have of the fruit, and these, though plainly derived from a Platanus, in their condition of fossilization afford no good characters with which to compare this species with the two now living on this continent, or with the living and fossil species of the Old World. P. aceroides, according to Heer, had fruit in racemes like *'.ie Mexican plane tree, while the fruit of P. occidentalis is sii jle. In general aspect tlie species now before us is more like the eastern than tlie western of our "1 i :^5 B t B1 DESCRIPTIONS OF SPECIES. 105 American sycamores, to the former of which it has considerable likeness and may very well have been its prof^enitor. The fine leaf fi<,''ured on PI. XXXVIII, from La Bontes Creek, is probably a young or abnormal state of this species, as it occurs with the ordinary ♦-ilobate form. : Formation and locality: Tertiary (Eocene!). Banks of the Yellow- stone River, Montana. -'.; - - , : -■ ;: - . ,' ,. Platanus latiloha Newb. . ,. , .^ ■■ ''■■■■'•■ '-- ■ PI. I, fig. -t.. -'- ■■•■-•■'-•■ •■■■•^^- •■'■•■■■■■ ^■•■ Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 23; Ills. Cret. and Tert. PL (1878), PI. II, fig. 4. •.:•.:. Platanus obtutdloba Lesq. Am. Journ. Sei., Vol. XLVI (July, 1868), p. 97. Sassafras (Araliopsis) mirabile Lesq. ? Cret. Fl. (1874), p. 80, PI. XII, fig. 1. "Leaves petiolate, three-lobed, decuiTent at the base, lobes broad, obtuse, or abruptly acuminate; principal nerves three, secondary nerves issuing from these at an acute angle, tertiary nerves leaving the secondary at a right angle, forming a network over the surface of the leaf, of which the arcolai are subquadrate." Collected by Dr. F. V. Hayden. Judging from the imperfect specimens which we have of this species, it is quite distinct from any described. Having the general form and nei'vation of the leaves of P. occidentalis, the margins p"j much less deeply sinuate, the lobes less acuminate, and the entire outline of the leaf more simple. The same is true of its relations with P. orientaUs of the Old World. The fossil species, of which several have been described by Unger and Goeppert, are quite distinct from this. The species described by Unger (P. Sirii and P. f/randifolia) are much more deeply lobed, while that figured by Heer Goeppert, and Ettingshausen (P. accroides) is less deeply lobed, but more strongly toothed. All fossil species heretofore known are from the Tertiary strata, this being the first instance where the genus has been found in rocks of the Cretaceous epoch. A large number of nearly complete specimens of the leaf described above have recently been obtainer" from the Dakota sandstones near Fort Harker, Kansas. Some of these have come into the possession of Lesquereux, who has included them in the genus Sassafras, and has figured ■1 : ! : 106 THE LATER EXTINCT FLORAS OF NORTH AMERICA. and described some of them in his Cretaceous Flora under the name of Sassafras {^Araliopsis) mirabilc. Count Sa))orta has raised the question whethor any of the trilobate leaves referred by Lestjuereux and myself to Sassafras really belong^ to this jrenus, and has sugfyested that their afHnities are more likely to be with Aralia. This question can only be definitely settled by the discovery of the fruits of the tree which bore these leaves; these will undoubtedly be found when they are carefully looked for by collectors. Waiting such time, however, we may say that some of the many trilobate leaves found in the Dakota group by tlieir form and nervation are much more like the leaves of Sasafras than those of any other living genus. In these the form is ele- gantly trilobate, the margins entire, the lobes i-ounded or obtusely pointed; the nervation is camptodrome. Possibly these leaves will be found to shade into those now under consideration, but judging from the material now before us the difference is considerable. For example, these leaves are larger, have a waved and sometimes even denticulate margin above, while the nerves are stronger and straighter, terminating in the denticles of the border. In all these respects they are more like the leaves of Platanus than th-.>se of Sassafras, and they are therefore for the present retained in the genus to which they were referred in the first published description. Formation and locality: Cretaceous (Dakota group). Blackbird Hill, Nebraska. Platanus nobilis ISlewb. • • PI. XXXIV; XXXVII, fig. 1; L, flg. 1. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 67; Ills. Cret. and Tert. PI. (1878), PI. XVII; XX, flg. 1, under P. Haydenii. "Leaves large, 1^ feet in length and breadth, petioled, three-lobed or subfive-lobed, lobes acute, margins of lobes and base entire, or near the summits of the lobes delicately sinuate-toothed; nervation strongly marked, generally parallel; medial nerve straight, two basilar nerves of nearly equal length and strength diverge from it at an angle of 30 to 3o degrees, are straight throughout, and terminate in the apices of the principal lateral lobes. Above the basilar nerves about 16 pairs of lateral nerves are given off from the midrib at about the same angle; these are nearly straight and parallel, terminating in the teeth of the margin. From DESCRIPTIONS OF SPECIES. tm each of the basilar nerves diverge about the same number of pairs of branches as from the midrib, and these are also nearly straij^ht and parallel, and terminate directly in the marjjin. Of these the second or third exterior one on each side is often much the stronger of the series, and is then prolonged into a small but distinct lateral, triangular, a(!Ute lobe, giving the leaf a somewhat pentagonal form. From this basilar branch of the lateral nerves, twelve or more short, generally simple, braiichlets spring on the lower side, and four to five on the upper side near the summit, all of which terminate in the margins. The tertiary nerves connect the adjacent secondary nerves nearly at right angles; sometimes they are straight and parallel, but oftener more or less broken and branching where they meet, near the middle of the interspaces. Where the systems of nervation of the lateral and middle lobes come in contact, the tertiary nerves are stronger and form a somewhat irregular network, of which the areola} are large and subquadrate." Collected by Dr. F. V. Hayden. ■ In general aspect these magnificent leaves are considerably unlike those of any known species of Platanus, and I have felt some hesitation in referring them to that genus. The texture was evidently thicker and the surfaces smoother than in the leaves of most Sycamores, and, on the whole, they recall the leaves of Cecropia or soine other of the broad, leatheiy, polished leaves borne by the trees of the tropics. On close examination, however, they are found to present the radical structure of the leaves of Platanus, and, aside from their association with so many genera plainly belonging to the flora of the temperate zone, their form and nervation seem to me to afford at least presumptive evidence that they were borne by a tree of that genus. They will, perhaps, suggest to the fossil botanist the leaves described by linger under tiie names of Platanus Hercules, P. Jatroph(efolia, etc. (Chlor. Prot, p. 137, PI. XLV, figs. 6, 7, etc.), and which he subsequ.ently removed from that genus. But those i)almate, many-lobed leaves were very unlike these now before us, and resemble much more the leaves of Jatropha or Sterculia than those of Platanus. The crowded, somewhat heavy and regular nervation of these leaves, their thick texture and polished surface, must have given the tree on which they grew an aspect quite different from that of P. occidentalis ; but P. orientalis, and sometimes P. racemosa, have thick and polished leaves, 108 THE LATER EXTINCT FLORAS OF NORTH AMERICA. and the deviation from the corairon form is not so great in these fossils as in tlie living species I have named, or the fossil species named by Unger, r (jmndlfolia and P. Sirii (Chlor. Prot., j). 13(i, PI. XLV, figs. 1-5, and Foss. Fl. Sotzka, ]). 3G [160], PI. XV [XXXVI]), fig. 1. In size these leaves exceed those of any known species of Sycamore, and if we are correct in referring them to Platanus, they may be considered the only relies we have of by far the noblest species of the genus. Some of the leaves are a foot and a half in length and of about etpial breadth, and yet they do not i^o far exceed the ordinary size of the leaves of the Sycamores as do the leaves of Acer macrophyllum those of otlier species of maple. Since the above notes were written, Lesqueroux has described (Tert. Fl., p. 237, PI. XXXIX, figs. 2-4) some trilobate, sometimes five-lobed leaves, which he coinpares with Platanus nobilis, and is inclined to regard them as identical; but it will oidy be necessary to refer to the figures now given, especially that on Plate L, to show that the diff'erences are such as to distinctly separate them. In Aralia notata Lesq., the general l)lan is not unlike that of the leaves in question (which is true also of most trilobate leaves), but here tlie resemblance ceases, for in A. notata the mar- gins are entire and the lateral nerves connect in festoons along the margin (camptodi-orae), whereas in P. nohilis the lateral branches terminate in the teeth with which the margins of the lobes are set (craspedodrome). In the Report of Progress of the Geological and Natural History Survey of Canada for 1879-80, Appendix N, Prof. J. W. Dawson gives* notes on a number of species of plants collected on the Souris River, and among others he mentions Platanus nohilis, of which good specimens were procured by Dr. Salwyn and Dr. G. M. Dawson, and he confirms, by observations on these specimens, my reference to the genus Platanus. He also mouions a feature which does not appear in any of the specimens I have seen, namely, two short basal lobes extending backward on the petiole. This is not, however, unprecedented in the leaves of Platanus, as I have seen something of the kind in the huge leaves borne by young and vigorous plants of P. occidcntalis. The figure given on PI. L is of the natural size, and attests the magnitude claimed for some of the leaves of this magnificent tree. When it is realized that the main nerves of the middle and lateral lobes must unite at a point some inches below the part DESCRIPTIONS OF SPECIES. tm represented at the bottom of the figure, and that the central lobe was at least (5 inches and the lateral lobes 3 or 4 inches larger than represented, it will be seen that the leaf could not have been much less than a foot and a half in length and breadth. These dimensions are rivaled by no living species of I'latanus, but I have fragments of the leaves of i'. lUijinoldsii which could have been little less in size. The leaf figured on PI. XXXVII, fig. 1, is an immature form of this species. This is established by its occurrence with the larger and moi*e deeply lobed leaves, with which it is coimected by intermediate* fori. is. Formation and local'dif : Tertiary (Eotsene f ). Near Fort Clark, Dakota. Platanus Raynoldsii Newb. PI. XXXV. ■.,■.- Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 69; Ills. Cret. and Tert. PI, (1878), PI. XVIII. "Leaves of large size, sub-orbicular or rudely triangular in outline, more or less rounded below, three-pointed above, often decuirent on to i}e petiole, margins at base entire, on the sides and above, coarsely and obtusely double-seiTate, the lobes of the upper margin short and broad, less produced than in most other species; nervation strong but open, having the general chai'acter of P. occidcntalis and of the fossil species P. accroides." Collected by Dr. F. V Hayden. The younger leaves are rounded in outline and decuirent on the petiole. Those more fully developed (which are sometimes 15 inches in length and breadth), more triangular in form, not always decurrent, and having lobes more produced, offer considerable resemblance to those of P. aceroides, an extinct species from the Miocene of Europe, the nervation being similar in kind and not greatly different in degree. The leaf is, however, always less angular than in P. aceroides and P. Haydcnii, and the character of the mar- ginal serration is essentially different from that of any known species. In P. aceroides the margiuo are set with long, acute, curved, simple teeth, as in the living P. occidentalls; in P. Haydenli the margins are for the mo.st part only sinaate; and in P, nohilis the middle lobes only are toothed, and those but slightly; while in the species before us, with the exception of the basal margin, the whole outline is marked by a broad, strong, double deiitation. I K4 *l;:i ; 110 THE LATER EXTINCT FLORAS OP NORTH AMERICA. Tho ii}^uro {i^iven on PI. XXXV is that of n complete leaf about lialf the size, linear, of tlie largest (joutained in the collection. In texture the ?eaf was ajjparently similar to that of P. occidentalis, rather thin and more or loss roughened. Formation and localiti/: Tertiary (Eocene?). Banks of Yellowstone River, Montana. Order KOSACEiE. Pyrus CRETAciiA Newb. PI. I, flg. 7. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 12; Ills. Cret. and Tert. PI, (1878), PI. II, flg. 7. " Loaves petioled, .small, rounuish-oval or elliptical, often slightly emarginate, entire or finely seri'ate; medial nerve strong below, rapidly diminishing toward the suiiunit; lateral nerves four or tive pairs with intermediate smaller ones, diverging from tho midrib at unequal angh^s, curved toward the summits, where they anastomose in a series of arches parallel with the margin; tertiary nerves foi-ming a network of which the areola3 are somewhat elongated." Collected by Dr. F. V. Hayden. There are a number of leaves in the collection, of which the characters, as far as they are discernible, agi'ee more closely with those of the species of Pp-us than with any other with which I have compared them. All the traces of their original structure which remain, however, are quite insufficient to permit their generic limitation to be determined with any degree of cer- tainty. The leaves of many of the allied genera of the Rosaceaj have so much in common that even with the leavei. of the living plants it would be difficult, if not impossible, to separate them. The fossils before us are, however, very characteristic of the formation which contains them, and for that reason require notice, and, as far as practicable, description. There are several other leaves in the collection which seem to me to have belonged to Rosaceous trees, and there is perhaps no a priori improba- bility that Pyrus began its existence on this continent with its congeners and companions in our forests of the present day. -— ^ Fortnation and locality: Cretaceous (Dakota group). Smoky Hill, Kansas. ,::: :..;•-•"■.■■■:"■.■:■-■/".■: =■'■■-:' '■■ ' DESCRIPTIONS OF SPECIES. Ahblanchiek 8IM1LI8 Newb. Ill PI. XL, fig. (i. Anu. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 48; Ills. Crot. and Tert. PI. (1878), PI. XXV, fly;, ti. "Leaves petioled, ovate, obtuse or aciuniuate, rounded or slijifhtly cordate at the base; margin coarsely toothed, except near the petiole, whore it is entire; nervation pinnate, delicate; medial nerve straight, six to seven pairs of lateral nervoH diverging from the midrib at an angle of about 40 degrees, slightly curved u])ward, e8i)ecially near the summit, the upper ones nearly simple, but giving off a iwrceptible branch near the summit on the lower side, which runs into the next tooth below. The lower j)air spring from the extreme base of the leaf, are strong and simple, and strike the margin where the dentation commences. 'I'he seond pair of lateral nerves each send off two or three slender nerves from near the summit to the teeth of the adjacent margin; tertiary nerves very fine, leaving the secondaries at right angles, and forming a fine network of which the areolae are nearly (juadrate." Collected by Dr. F. V. Haydeu. The number of 8j:»dcimen8 of this species in the collection is small and all but one are imperfect. This one is the impression ox' a thin, delicate leaf, of which all the details of nervation are preserved as perfectly as they could have appeared in the living plant. The other specimens indicate that the leaves were usually pointed, often acute. From the nervation and character of dentation of these leaves, I think we may at least say that the plant which bore them was Rosaceous, and among the Rosaceous genera with which 1 have compared them they approach most nearly to Anielanchier, some of the leaves of A. Canadensis being entirely undistinguishable from them in form or nervation. A. Canadensis now grows over all the temperate parts of the ctmtinent and would seem from its wide range to be an old resident of the conti- nent and as likely to be represented in the Tertiary as any other of our plants. Formation and locality: Teiiiary (Eocene?). Banks of Yellowstone River, Montana. ;i! 112 THE LATKU EXTINCT FLORAS OF NORTH AMERICA. CrAT.KOUS KhAVKSCKNS Nowb. I'l. xLviir, fig. 1. Pnx!. U. 8. Nat. Mu»., V«>1. V (Miircli 21, 1883), p. fi07. "Loaves small, about I inch in loufjtli and brcadtli; IoImhI; lobos roun(l(«l and boarinjf a few teeth or cronulatictus; the sunnnit of the loaf trilobod, with two lateral lol)os bolow on either side." Several snail, lobed leaves are contained in the eolleetion made by Rev. Thomas ("tiiuh»n, whieh bear sueh re.send)lance to those of some species ot Cratieg'is that wo seem to be justified in rofeiTin}.f them to this genus. Of these the one fifrured is the most complete in outline; this in its general pn (portions and markings approaches chtsely lO the leaves of ('. Jinva Ait., but in that speci(is the leaves are usually somewhat larger and the lobes are set with several acute teeth. Eighteen fossil species of Crataegus have been described, and of these three from the Tertiary deposits of North America, namely, C. antiqita Heer (Fl. Foss. Arct, V(d. I, p. Tif), PI. L, fig.s. 1, 2), C. Warlliam Heer, and a (eqiiidcntata Lesq. (Tert. Fl., p. 297, PI. LVIII, figs. 4, 4a.); but these are much larger and have rhomboidal and undivided leaves; indeed, it is not certain that they all belong to the geinis Crata'gus. Of foreign species there is none witli which this is likely to be con- founded, C. dyssentcrica Mass. (Fl. Foss. Senigall, j). 414, PI. XIX, fig. 1), is similarly lobed, but the leaves are larger and nuich more deeply cut. The resemblance of the leaves before us to those of the living C. jiava is so close that it is (juite possible that the present is the derivative from the ancient species, a possibility suggested in the specific name chosen. Formation mid locality : Tertiary (Miocene). Bridge Creek, Oregon. ?k-;nus variabilis Nowb. ^ ■'■^'' '■/'■; '• PL LII, flgs. 3 and 4 (in part), 6. , .^ . . : , Proc. U. 8. Nat. Mus., Vol. V (March 21, 1883), p. 509. "Leaves short-petioled, very variable in form; lanceolate or broadly lance-ovate, 2 to 3 inches long by 1 to 2 inches wide; acuminate at the summit, wedge-shaped at base; margins thickly set with minute, acute, appressed teeth." Numerous leaves, which evidently belong to the geims Prunus, occur DKsrurrrioNs or si»k(IK8. 113 in the coUootiouH from Alnskii iiiiule by Captain Ilowiinl, luwl miiiK'tiines Heveriil on thu Haiiie slab that uxliibit no diftureiicuH ox'tqit tho innrkod variation in t(»rni sliown in the fi^uroH and alludod to in tho naino ^ivcn. Coinpiu'cd with the livin^j;' HjM-cicH, these h'livew liave innrli th(^ aspect of some of the forms of /'. VhiihiiuiKi, the marfrinal sc^rration beinj; very much tho same, though tho U-aves of the livinj;' plant are usually obovate. A Hpoeies of PrunuH is described by Professor Ileer from the Tertiary Htrata of Greenhuid und*M- the name of /'. Srottii (V\. Fohh. Arct., V^ol. I, p. 126, PI. VIII, fig. ■<), but the only leaves he describeH and tigures are much larger and hmger and more coarsely toothed than these. Numerous species of Prunus liavi' been ch^scribed from the Tertiary of the Old World, but so far as we can judge there are none that have the Homewhat peculiar lance(dat»« U'af, br<»ader in the inid'.-::^'. Acer sp.l Newb. :'*' ,,..,,>■ .v---'..'^ .-v ■ :;, • PI. xLvi, fig. 8. .'r,;.w-'-''."' ; \-- ;■■■ ■■':■ Note. — The only information which I have been able to obtain in regard to thi' figure is the manuscript note, "Acer fruit," by Dr. Newberry, on the margin of the plate, imd the local. ly as given on the specimen label. — A. H. Formation and locality: Tertiaiy (Miocene). Bridge Greek, Oregon. Nequndo triloba Newb. - PL XXXI, fig. 5. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1808), p. 57; Ills. Cret. and Tert. PI. (1878), PI. XXIII, fig. 5. "Leaves thin and delicate, but distinctly nerved, pinnate in one or more pairs, leaflets lanceolate or lance-ovate, long-pointed, rounded or slightly cordate at base, short-petioled; margins coarsely, remotely, and irregularly toothed ; terminal leaflet trilobate, the margins toothed or ser- rated; nervation of lateral leaflets pinnate, nine or ten pairs of lateral nerves diverging from the midrib at an angle of about 50 degrees, arching iipw^ard, more or less branched toward the summit. Of these the basal pair are shortest and simple, following the course of the adjacent margin; the second pair are strongest, and throw off each three or four curved branches on the lower side." Collected by Dr. F. V. Hayden. • ' The general aspect, including textm'e, form, dentation, and nervation of the lateral leaflets is strikingly like that of the corresponding jjarts of the leaf of the living Negundo aceroidcs. The genus Negundo i.s represented among living plants by but a single species, and this is so like Acer in all but its leaves that Professor Graj' intimates that it should hardly be con- sidered distinct from that genus. A fossil species has been discovered in the Tertiaries of Europe, N. E'ArojHCinn Heer (Fl. Tert. Helv,, Vol. Ill, p. GO, PI. CXVIII, tigs. 20-22), but it would seem to have been a smaller species than the living one, and had obovate wedge-based leaves quite difi"erent from those before us. If, in the lighf, v)f more and better material, it should prove that a species of Negundo lived on the American continent during the Tertiary -:'N' % 116 THE LATER EXTINCT FLORAS OF NORTH AMERICA. age, it would be a fact of no little interest, and would strengthen the claims of Negimdo aceroidcs to a distinct generic place in the botanical series. In that case, however, its trilobate terminal leaflet would still further indicate its acerine affinities. Formation and loccdity: Tertiary (Fort Union group). Fort Union, Dakota. Order SAPINDACEiE. Sapindus affinis Newb. PI. XXX, fig. 1; XL, fig. 2. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 18G8), p. 51; Ills. Cret. and Tert. PL (1878), PI. XXIV, fig. 1 ; XXV, fig. 2. "Leaves pinnate in man}- pairs of leaflets, with a 8iu;^le L >olate terminal one; leaflets smooth, thick, lanceolate, long-pointed, ^ .u , otssile or short-petioled, luisymmetrical, rounded or wedge-shaped at base; nerves fine and obscure, ten t)r more branches diverging from the nn'di-ib on either side at somewhat unequal distances, and of unetjual size. Tiicse arch upward, giving ofl' several lateral branches at right angles, or nearl} so, and die out near the margins, or are earned around in a cui've parallel with it, and thus connect." ;, , , : Collected by Dr. F. V. Hayden. Tliese leaves are most strikingly like those of Sapindus, and taken by themselves woukl afford perhaps suflicient ground for uniting them with that genus. They are also very like a series of leaves found in the Tertiaries of Europe, figured by Professor Heer, in Fl. Tert. Helv., Vol. Ill, p. 61, Pis. CXIX, CXX, CXXI, under the names of Sapindus fall folius, S. dctisifoHiis, and S. duhius. The nei'vation is also the same: f there can hardly be a doubt that our ])lant and those of Professor Heer drc generically identical, and, if the proofs before him of the identity of his fossils with the living genus Sapindus are sufficient, we must conclude that the specimens before us are also the representatives of that genus. In our specimens, however, the leaves are constantly shorter and broader than in the species I have mentioned, iind are often rounded at the base, so that I have been compelled to regard then; as specifically distinct. Fonnatioit and locality: Tertiary (Eocene?). Mouth of Yellow«tone River, Montana. "i^"" „3:^. DESCRIPTIONS OF SPECIES. J^V iy • HT ,.■ SaPINI)U8(?) MEMBRANACEU8 Newb. , .: . ■■"'-' PI. XXX, figs. 2, 3. ^ .: ; Sapindus membranaceus Newb. Ann. N. Y. Lye. Nat. Iliat., Vol. IX (April, 180H), p. 52 ; Ills. Cret. and Tert. PI. (1878), PI. XXIV, figs. 2, 3. "Leaves pinnate in many pairs of leaflets, aiid terminating in a large ovate, often luisymmetrical one; lateral leaflets lanceolate, acute, wodge- shaped at base, unsymmetrical, thin and membranous, with entire margins; nervation fnie and sparse, !nany ])airs of lateral nerves being given off by the midrib (from which also spring many small lateral branchlets), and these arching upwai-d inosculate neai* the margin or die out." ',';.<■;•■"■'.■•: Collected by Dr. F. V. Hayden. This is similar in nervation and in the general form of the lateral leaflets to the preceding species (rin, and the nervation is a little more crowded. Formation and locality : Cretaceous (Larajnie group). Belmont, Colorado. Khamnus Eridani Ung. PI. XLVIH, fig. 7 Gen. et fSp., PI. Foss. (1850), p. 466. The Ififtf repi'esented in fig. 7 is unique in the collection made at Bridge Creek, Oreg<'r., but though imperfect it is very distinctly marked, and apparently belongs to the genus Rhamnus, and so closely resembles some of the figures of Rhamnus Eridani Ung., especially that described in Fl. Foss. Arct , Vol. I, p. 123, PI. XLIX, fig. 10, that I have not felt justified in regarding them as distinct. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. Rhamnites concinnus Newb. , ,. PL XXXIII, flgs. 7 (8?).' Ann. N. Y. Nat. Hist., Vol IX (April, 1868), p. 50; Ills. Cret. and Tert. PL (1878), PI. XVI, figs. 7, 9 (fig. imder Viburnum asperum). "Leaves petioled, long ovate, acute, rounded at the base, coarsely and nearly equally mucronate-dentate ; nervation pinnate, remarkably precise and parallel throughout; medial nerve straight; lateral nerves, nine to ten pairs, diverging at an angle of about 20 degrees, slightly arched U2)ward, parallel among themselves, basilar pair reaching to margin below the mid- dle of the leaf, sending off each about eight short, simple, slightly curved, parallel branches to the dentations of the baso-lateral margin; sui-Orior lateral nerves simple, or once-forked at the summit; tertiary nerves very numerous, simple, parallel, connecting the lateral secondary nerves and the branches of the basilar nerves nearly at right angles." Collected by Dr. F. V. Hayden. ' The description applies wlthont doubt to fig. 7, but does not agree with fig. 8. This latter specimen, however, is plainly labele|4i descript: OF SPECIES, These beautiful leaver are so definite in form and structure and so perfectly preserved that we should have no difficulty in referrinj? them to their appropriate genus if we conkl find among living trees their precise generic counterpart, but up to the present time 1 have not been able to satisfy myself that they are generically related to any living ])lants. The nervation is in some respects very like that of Berchemia, e. g., B. voluhilis, the "Supple Jack" of our Southern States. Nowhere else do I reniend)er to have seen the same parallelism of the secondary and Tertiary nerves, but the sen-ation of the mai'gin is coarser than in any of the Rhamnacea; with which I am acquainted, and the development of the basilar pair of lateral nerves is much greater than in Berchemia. This latter character is not without example in Rhamnus, as it is even more conspicuous in some species of the genus, as, for example, in R. ceUifolia of the Cape of Good Hope. A cross between that species and our Berchemia, with a greater develop- ment of the marginal dentation than either exliibits, would give us the fossil before us. . - < - ? ;■:.;;,;■■ Considering it to exhibit more of the character of the Rhamnacea^ than of { ay other family, I have placed it doubtfully there. Formation and locality: Tertiary (Fort Union group). Fort Union, Dakota. ,; ZizYPHus liONOiFoLiA Newb. ; ; , ; '■■'-■^'■^"- ■"■-■'■■'•■■ ^ ''.-.,.;;:;•;- PI. LXV, figs. 3-6. \'''' f'-''^- ':■':,.' '-S . Proc. U. S. Nat. Mua., Vol. V (March 21, 1883), p. 513. • ^ . "Leaves 4 to 7 inches long by 6 to 12 lines wide; lanceolate, long- pointed, wedge-shaped at base, and long petioled; margins waved, or more or less distinctly toothed ; midrib well defined from base to summit ; basal pair of- lateral nerves approaching closely to the margin near the middle of the leaf, then curving gently inward and anastomosing with the higher lateral nerves, of which there are three or more set alternately and curving upward, forming a festoon near the margin; tertiary nerves very finely reticulated." Of this species a large number of specimens occur in the Green River Shales in certain layers '.\^here they are associated with the fenis Lygodium and Acrostichum Th-^y may be at once distinguished from those of any other described species of Zizyphus by their elongated and lanceolate form. In the same slabs which contain these leaves are a few which, though %y 120 THE LATKR EXTINCT FLORAS OF NORTH AMERICA. % m imperfect, apparently I'epreseut LeHquereux's Z. cinnamomoides. These are ovate or ovate-lauceolate iii outline, and yet may be only a variety of the species described above. They differ, however, widely from the descrip- tion of Z. cinnanioDioidcs of Lesquereux. Formation and locality : Tertiary (Gi'een River group). Green River, Wyoming. Order VITACEiE. VlTIS EOTUNDIFOLIA Newb. PI. LI, fig. 2, in part ; LIII, fig. 3. - ■••■ .1 Proe. IT. S. Nat. Mus., Vol. V (March 21, 1883), p. 513. "Leaf broadly rounded or sub-triangular in outline, cordate at the base, and with an acute point at the summit, and at the extremity of each of tlie angles; intermediate portions of the margin coarsely and bluntly toothed; strongly three-nerved; tertiary nei"vation distinct and flexuous." Collected by Captain Howard. The general aspect of this leaf is but imperfectly given in the drawings, inasmuch as the strength of the nervation has been somewhat exaggerated, but the leaf was ajjparently thicker and with sti'onger nerva- tion than ''n most of the vines. Among living species it bears the strongest resemblance to V. labrusca, but is less distinctly angled and more strongly dentate on the margin. Professor Heer has described three species of Vitis that occur in the arctic regions, V. Olriki (Fl. Foss. Arct., Vol. I, p. 120, PI. XLVIII, fig 1), V. arctica (op. cit, PI. XLVIII, fig. 2), and V. Islandica (pih cit, p. 150, PI. XXVI, figs, le, If, 7a), but all these had leaves which Avere more elongated triangles in form and of lighter structure. Formation and locality: Tertiary (Miocene). Admiralty Inlet, Alaska. Order TILIACE.ffi. Gbewia CBENATA (Ung.) Heer. :: : , / PI. XLVL fig. 2; XLVIII, figs. 2, 3. :i. % --■^'■'—- y.', 71. Tert. Helv., Vol. Ill (1859), p. 42, PI. CIX, flgs. 12-21; CX, figs. 1-11. - , Dombeyopsis crenata Ung., Gen. et Sp. PI. Foss. (1850), p. 448. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon, -■' ;^;v•^';V■.^X-^.:■■ ■ DESCRIPTIONS OP SPECIES. ■;.>;■'•; ^ T ' / tS^ Order ARALIACEiG. ,^-■ ^,-;';,i-';v.>,-,vr ■:.::'' ' , :, , _ ; Akalia macrophylla Newb. ^ ;; . • "" PI. LXVII, fig. 1; LXVIII, fig. 1. ^ ; Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 513. . • • , "Leaves large, long-petioled, palmately five-parted from the middle upward, divisions conical in outline, sometimes entire, often remotely, occa- sionally coarsely toothed; nervation strong and regular; the midribs of the divisions strong and straight, those from the second lateral lobes springing from near the bases of the first lateral lobes; secondary nerves numerous, distinct, curved gently upward; where the margins are entii'e, jiartially camptodrome; where dentate, terminating in the teeth; tertiary nerves anastomosing to form quadrangular and very numerous areoles." Collected by Dr. C. A. White. In general form and nervation these leaves are very similar to the typical fossil species of the genus, viz: A. Whitneifi Lesq., A. anyostUoha Lesq., of the Pliocene of California, and A. Hercules (Ung.) Sap. (Ann. Sci. Nat Bot., S'"^ Ser., Vol. IV, p. 295 [151], PI. IX, fig. 2), of the Miocene of Radoboj, Croatia (Platanus Hercules Ung., Chlor. Prot., p. 138, PI. XLVl), and especially A. Saportanea Lesq. v.. the Dakota Cretaceous. From all these, however, it differs specifically in several characters. Unger's species agrees in having the midribs of the lobes radiating from the base, while in the species described by Lesquereux, enumerated above, the lower i)air spring from the first laterals some distance above their bases, as though the primary form was a tripartite leaf, the lateral lobes contracted where they join, thus acquiring a .spatulate outline; and his A. gramlifolia has more coarsely toothed, A. Jatrophmfolia, seven-parted leaves. In the localities where they are found the leaves of A. macroplujUa are exceedingly abun- dant, sometimes matted together so as to obscure their outlines. These show that they vary in size, in the number of lobes, and in the character of the margins, occasionalh' one occurring which is oidy three-lobed, while almost all are five, and the margins are sometimes nearly entire, while i ;i other leaves they are all strongly, even spinously dentate. The leaves vary from 3 to 12 inches in length, and the lobes are sometimes long and narrow. \l h\ 122 THE LATER EXTINCT FLORAS OF NORTH AMERICA. ill others nmch broader. This viirial)ilit.y indicates that the leaves having narrow entire lf»bes found in the Dakota group and named A. quinquepnrtita, A. trijjartita, and A. cimenta, by Mr. Lesquereux, are but fonns i»f one species. AruUa Whitueyi Lescj. has seven-parted leaves, these less deeply lobed, and with entire margins; A. anf/ustiloba more deeply cut leaves with naiTower and entire lobes (Mem. Mus. Conip. Zoiil., ^'ol. VI, No. 2 (1878), p. 22, PI. V, figs. 4, o). Perhaps of all described species of Aralias A. Saportanea Lesq., from the Dakota group of Kansas (U. S. Geol. and Geog. Surv. of Colorado, Hayden (1874), p. 350, PI. I), approaches nearest to those under considera- tion, but are distinguished by minor characters, smaller size, less deeply dentate margins, etc. This species is found, however, in our Middle Cretaceous strata, forming part of tiie most ancient angiosperm f ora, and while the species are imquestionably distinct, their great resemblance may be fairly taken as an indicatif)n that one is the progenitor of the other. The group of leaves now before us has been, perhaps without sufficient proof, refeiTed to the genus Aralia, and it is highly desirable that this question should be decided by the discovery of fruit or flower.^: But whether Aralia. or not, they constitute a marked feature in the older angiosperm floras in this country and in Europe, and their geological intei-est and value is to a certain degree independent of their botanical relations. It has been suggested by Count Saporta that not only the trilobed leaves from the Dakota Cretaceous, which I have described as Sassafras, but also the great leaves of Platanus nobilis, figured in this volume, should be referred to Aralia, as the i)latanoid leaves described by Unger as P. Hercules, etc., have been; but there is little rpsemblance between the quinquepartite, naiTOw-lobed, toothed leaves of A. Saportanea Lesq. and its associates with three lobes, broadlj^ rounded, sometimes almost obsolete and entire, in Sassafras cretaceum, and it only requires a glance at the figure of the huge leaf of Platanus nobilis, given on PI. L of this monograph, to be satisfied that its affinities are with Plataiius rather than Aralia. Formation, and locality: Tertiary (Green River group). Green River, Wyoming. DESCRIPTIONS OP SPECIES. 123 AbALIA (I) ylJINQUKPARTITA Ije»q. PI. IX, f\(i. 1. Hayden'8 Ann. Kept., 1871 [1872], p. 302; Civl. Vh (1874), j). 00, PI. XV, tin. li. The possession of a bettor spiicimen than that on wliich Lesquereux based the deseription of the species, one, in fact, that is nearly entire, prompts the pubhcation of tlie figure now given. Since tlie appearance of the Oretai^eoiis Flora, Lesquereux has figured and described a number of species of Aralia (Report of Dr. F. V. Hayden, 1874, pp. 348, 349), of which his Aralia concreta and A. trlparHta are perhaps only forms of the s])ecies under consideration. Formotmi and locality: Cretaceous (Dakota group). Fort Ilarker, Kansas. Aralia triloha Newb. , ,..y.,, :■,;•;,:;:■ . PI. XL, figs. 4, 6. ,-,:;■:,:/■ V;,;.. .f, ■■.,,..■ ■-■ Ann. N. Y. Lye. Nat. Hist., ol. IX (April, 1868), p. 58; Ills. Cret. and Tert. IM. (1878), PI. XXV, figs. 4, 5. "Leaves pinnate or ternate; lateral leaflets long-oval, roiuided, or slightly heart-shaped, and unequal at base, pointed at summit, sharply serrate throughout; nervation pinnate; texture thin; surfaces smooth. :; "Trilobate leaf similar in surface, textui-e, nervation, and marginal seiTation, but unequally three-lobed; lobes acute, long-pointed." , , Collected by Dr. F, V. Hayden. The character of these leaves is very well shown in the specimens before me. They seem to indicate a species of Aralia, and have a marked resemblance to some of the leaves of our two most common species, A. mcemosa and A. nudkaulis. The trilobate leaf is not commonly found in our Aralias, but there is always a tendency to the production of such a form, and I have frequently remarked it in A. raremosn, as it grows at the West. That is, however, a larger and stronger plant than this was. For mation and locality: Tertiary (Eocene?). Fort Clarke, Dakctta. t^ na % 124 THE LATER EXTINCT FLORAS OF NORTH AMERICA. Order CORNACE^. C0RNU8 Newhebryi Hollick.' PI. XXXVn, figs. 2-4. Comtis acuminata 'Sewh. Ann. N. Y. Lye. Nut. Hist., VoL IX (April, 1868), p. 71, (n<»l, C. acuminata Wobtir, I'ali(>(nit(»|>;r., Vol. II (1852), p. 192); Ills. Cret. aud Tert. PI. (1878), PI. XX, figs. 2-4, under C. activiinaia. " Leaves ovate or ovate-lanceolate, loiifjf-pointed, acute, entire, nar- rowed at the base, and slightly decuiTeut; midrib distinct, straight or curved toward the summit, tVdlowing the course of the frequently deflexed j)(>iiit; lateral nerves numerous, regular, and nearly parallel, simple, lower oni-.s straight with a slightly curved summit, upper ones becoming pro- gressively more arched upwards when near the apex of the leaf curved in so as nearly t(- join the extremity of the midrib; tertiary nervation so fine as to be hardly perceptible in the fossil state?." Hie specimens of these leaves contained in the collection of Dr. Hayden are (piite numerous and pretty well preserved. Although there is no fruit of Cornus as.sociated with them, there jsan be little doubt that they are properly referred to that genus. The aspect of the leaves of Cornus is ])eculiar, and such na is usually readily recognizable at a glance. This facies is given by the outline as well as the nervation. The outline is usually more or less accurately oval, the margin entire, the base rounded or slightly wedge-shaped, the summit i)ointed and laterally flexed. The nervation is very clearly defined, the midrib strong at the base, tapering gnidually till it reaches the extreme point of the aj)ex ; the lateral nerves pinnate, approximated below, more remote above ; all simple, arched upward, those near the summit being dniwn in to join the midrib. This latter characteristic is visible in all the sjiecies of Cornus known and is particuhu'ly noticeable in the conunon herbaceous species of C. Can- adensis. It is also very marked in C Florida, C. sericea, C. alteniifolia, etc. The tertiary ^ervation is generally delicate and sparse, the tertiary branchlets running across obliquely, but with nearly a straight course, between the adjacent lateral nerves. In all these characters, as far as they ' Dr. Newberry's oilglnal published name. C. ariimhittfti (186H), was Hnte<1ated by Weber's, C. acuminata (1852), given to a;iother siiecies. It therefore became necessary to change the name.— A. H. DKSCHirnONS OF SPKCIKS. 125 are retained in the foHsils before u«, we iind an entires (utrrespcnulence with tlio Hvinj^r t at Hoiiiewliat uiicMiiial diHtaiiceH, Htnii^ht and |)amllcl below, torkod aixl iiumciilatiiig above, tonniiijif a t'oHtoou parallel with the marfiiii; tertiary iierveH foriiiing ail irref^ular network of polyjTonal and relatively lar^''(^ areoleH." Collected by Dr. F V. Haydeii. Of thin specieH there are nuiiierouH HpeeimeiiH in the collectiotiH nmide by Dr. Ilayden in as good preservation aw the material in whieh they are fossilized will permit. The nervation is strongly marked, and all its more prominent cliaraeters as ap})reciable in the fossil as they were in the fresh leaves. In nervation, consistenee, and outline these leaves are almost uii- distinguishable from those of the "Pepperidge" (Nyssa multiffora). The primary and secondary nervation of some species of Magnolia also exhibit a strong resemblance to that of these fossils, but a less comph^te coiTesjjond- enee than Nyssa j)resent8. Without the fruit, or at least leaves preserved in a tine argillaceous sediment in which the finer details of nervation are given, the affinity suggested must be to some extent ct»njectural. FortHP*ion and locality: Cretaceous (Dakota group). 131a ird Hill, Nebraska. Order SAPOTACE.ffi. - Sapotacites Haydenii Heer. ii ;,:; PI. V, tig. 1. Proe. Acad. Nat. Sci. Phil. (1858), p. 266; III. Cret. and Tert. PI. (1878), PI. V, fig. 1. Professor Heer compares this leaf with one described bj- him in his Flora Tertiaria Helvetiic under the name of iS'. inimusops. He further de8(!ribed it as "diminishing toward the base, rounded toward the apex, rather deeply emarginate. From the midrib, which gradually becomes slender and dies out, proceed at acute angles very numerous secoiidar}- nerves, which have the peculiarity of ramifying very much." This is one of the leaves described by Professor Heer from tracings se.it him by Mr. Meek, and the specimen now figured is that from which til J tracing was made. As it has not before been figured, and is frequently referred to in the earlier discussions of the flora of the Dakota group, it has seemed desirable that a figure should be given of it so that it may be ideu- Miii DESCRIFnoNS OF SPECIES. 127 tifietl. The original tnuring of Mr. Meek, on which ProfuHHor ITihu- wrote the name given to the leaf, aH well a« the original, are before me as I write, HO there can be no mistake aboii* the itlciititicatioii of the species. I have seen no other siiecriniens than tliis oih», and liave uotliing to a ■ PI. XLIX, lig. G. Fl. Foss. Arct., Vol. I (18(58), p. 118, PI. XVI, fig. 4. Note. — The only manuscript which I hiivo found relating to this figure is a marginal note on the plate referring it to '^Fraxinus dentata Heer?," evidently meaning F. ilenticulatd, and the specimen label giving the locality. — A. H. Formation and loaditi/: Tertiary (Miocene). Bridge Creek, Oregon. FkAXINUS INTEGKIKOLIA Newb. PI. XLIX, figs. 1-3. Proc. 13. S. Nat. Mus., Vol. V (March 21, 1883), p. 509. "Leaves short-petioled or sessile; lanceolate; broadest near the base, which is abruptly narrowed and wedge-shaped; sunnnit narrowed, extrem- ity rounded; margins entire; nervation reticulate, camptodrome; lateral branches connected in elegant festoons near the margins; intervals filled with a network of roundish, polygonal meshes." Collected by Rev. Thomas Condon. These leaves have been referred with some doubt to Fraxinus, but the nervation is almost exactly like that of F. prcedida Heer (Fl. Tert. Helv. Ill, p. 22, PI. CIV, figs. 12 to 13g), and the general form is similar, except that in that species the folioles are unsymmetrical and are generally more or less dentate. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. Order CAPRIFOLIACEiE. Viburnum antiquum (Newb.) HoUick.^ PI. XXXIII, figs. 1, 2. Tilia antiqua Newb. Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 62; Ills. Cret. and Tert. Pi. (1878), I'l. XVI, figs. 1, 2, under Tilia antiqua. Vihiirnum tilioides Ward. Bull. U. S. Gcol. Surv. No. 37 (1887), p. 107, PI. L, figs. 1-3; LI, figs. 1-8; LII, figs. 1, 2. "Leaves 4 to 5 inches long, nearly as wide, often somewhat unsym- metrical, cordate at base, abruptly acuminate at summit, coarselv and ' This species was referred to the genus Tilia, by Dr. Newberry, in his original description, but Dr. Lester F. W""'! has clearly shown tli^t it belongs in the genus Viburnum. — A. H, DESCRIPTIONS OF SPECIES. 129 necarly eqnall}' toothed; nervation strong, medial nerve straight, bearing eight or nine pairs of lateral nerves, which diverge at an angle of about 45 degrees. The basila" pair of lateral nerves each sending off five or six branches on the low^er side, which are again branched and terminate in the teeth of the margin. The second pair of lateral nerves have each four similar branches, the third pair throe, the fourth pair two, the fifth pair one, though there are frequent departures from this rule. The tertiai-y nerves are strongly marked, leavmg the secondary nerves nearly at right angles, crossing directly between the adjacent ones, or anastomosing Avith some irregularity in the middle of the interspaces." Collected by Dr. F. V. Haydeu. There are many fragments of these leaves in the collection before me, embedded in a very fine and hard argillacef)us limestone, and very beauti- fully preserved. They exhibit considerable resemblance to the leaves of Morns, especially M. rubra, but in that ])lant the basilar nerves of the leaves are more developed and reach the margins higher up. The marginal den- tation is also generally more acute in the leaves of the mulbeny and the leaves more pointed. The nervation of these fossil leaves is almost })re- cisely that of our common species of Tilia, but in that the marginal denta- tion is nuich sharper. In a Southern species, however, T. hetcrophylla, I have found leaves which seem to be the exact counterpart of these; leaves with a roughish surface, strong and regular nervation, just after this pat- tern, and with a coarse, obtuse, and regular dentation. I am, therefore, inclined to refer these fossils to Tilia, and to regard them as the relics of a species closely allied to, if not identical with, T. heterophylla. Formation and locality: Tertiary (Eocene?). Near Fort Clarke, Dakota. VlllURNUM A8PERUM Newb. ,.;...'■. u,v:'-- PI. XXXIII, fig. fl. --':■,:.,/.;: Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 18G8), p. 54; Ills. Cret. and Tert. PI. (1878), PI. XVI, fig. 8. "Leaves ovate in outline, rounded or slightly cordate at base, acute and long- pointed above, margins all cut by relatively large acute teeth; nervation strong, crowded; midi'ib straight; lateral nerves alternate, about nine on each side, tne lowest and strongest bearing each five to six simj)le blanches on the lower side; the lateral nerves of the middle of the leaf MON XXXV 9 130 THE LATER EXTINCT FLORAS OF NORTH AMERICA. Holliok. Juglanx nlgella Heer Juglann occidentalis Newb Carya antiquorum Newb Myrica trifuliata Newb Populua acerif oUa Newb Populua cordata Newb Populus ( f ) cordif olia Newb Popnlas cuneata Newb Populua oyclophylla Heer Populus (?) Delmyana Heer Populus elliptlca Newb Populua flabellum Newb Populus genetrir Newb Populus litigiosa Heer Populus mlcrophylla Newb Populus Nobrasceneis Newb T'opulusnervoiw Newb Populus nb. . ^4a elongatft Newb Populus polymorpba Newb Populus rhomboidea Lesq Pop''.usrotundUolia Newb Popul .0 smllacifoUa Newb i^o lii ^. i 8 6 7 8 10 11 £ I Sb 18,18 I 14 + IS 16 17 18 + " M TABLE OF DISTRIBUTION. 143 mentioned in the text — Continued. d 1 .2 1 1 -] d 1 i 81 d .2 d 1 5 8S d s .? a 1 s 80 ^. 1 .9 ►J Ef i s; 8 1 s t a § § & 5 i i 6 1 1 so a 1 § 1 1 u 81 8 4> i i 03 i S 3S i 1 1 84 § cS M 1 1 1 8b d 1 § £ Q 1 3 J3 1 1 86 d 1 1 i o & 1 87 d 1 a P 1 1 1 § i 88 d 1 § ■a u I e ( e § i 1 89 + a a 1 a o '5 U I i > 40 d 1 U 9 >■ I a EC a 1 o 41 a O 1 i 6 (A 9 48 d. i: d 1 1 48 i o g 1 44 g 1 2 u a o 46 i 1 1 1 46 s 1 < a 47 d 3 n 1 1 48 i i > 1 >< 49 M 8 a g 1 fiO C3 si P 1 , 19 1 o 1 1 i d o" O 81 1 82 1 1 u .S 3 1!8 1 d .2 o' 1 1 1 34 d u 1 d y 25 d d o & e a 2 1 s 26 d 1 s .S o 27 1 1 u a >t 1 2$ 1 3 of a 1 § >> o 3 a I CO g i a 1 SO a 1 J' a d 1 SI o 1 5 1 82 i i 1 1 3S § i o I 84 ■ i i 0) 1 1 56 d 1 1 i 1 86 1 i i 1 >^ 1 87 d 1 1 i 1 c ■i I 88 d ! i i 1 s o e > i 89 0. 1 a D 1 s 1 40 d a & 1 i i ^_ i 41 s 1 g o i 1 1 i 42 6 a 3 1 1 48 1 la o i 1 a g o 5 4ft 1 « 46 s 1 47 1 a 1 a 48 § § >> 49 1 1 8 to 60 § 1 1 & t 3 61 ci 1 t a Sx 62 fW + m W) HI «» nn (Vt + H') + + + Atl 67 m t- + 1 Ab 70 71 T" + n + + 74 + + 7ft Tfi 77 7R 79 M) + HI + fm + HD H4 + K5 1... 1.. H6 % MON XXXV- -10 f' t % 146 THE LATER EXTINCT FLORAS OF NORTH AMERICA. V I 87 74 88 75 89 7B go 76 01 76 92 77 93 78 9t 78 95 79 96 80 97 81 98 81 99 81 100 82 lo: 83 lOS 81 KB HI IM 85 105 86 106 87 107 88 108 88 109 89 110 90 m 91 112 03 ll.i 93 114 9t 115 94 Species. Qnercus flezuosa Xewb Quercas gracilis Newb Quorcus OrOnlandica Heor Qnorcus laur" lia Newb QaercQS paucidentata Newb QuercuBsalicifoliaNewb-.. QutTcus simplex Newb Quercus sinuata Newb Querc.uH Sullyi Newb Ulmua speciosa Newb Planera ereunta Newb Planera loiiKifolia Lesq Planera mierophylla Newb 82 I Planera nervosa Newb Planera variabilis Newb Celtls parvifolla Newb Ficn8(?) AlaskanaNewb Ficus asarif ulia minor Lesq Picas (T) Condont Newb Ficus membranacea Newb Ficus planicostata Lesq Ficus reticulata (Leaq.) Holllck Prntoflcus incequallH Newb Aristoloohia cordlf olia Newb Cabomba ( ? ) gracilis Newb Cabomlia inermis (Newb.) Hollink . Braseuia (J) antiqna Newb Magnolia alternans Henri Magnolia elliptica Newb List of speciex, nhotving localitien 8 4 5 6 7 10 una lis £11 It « .s g S 14 a -S ISiie 17 18 TABLE OF DISTRIBUTION. 147 nientioned in the tea;*— Continued. « 3 y i ■& 1 <2 19 i .2 o 1 a a SO i d i o E 81 t .2 0' 1 1 1 I 6, .2 1 34 P. 1 1 1 f 85 n 1 1 1 a S7 .2 88 s o 4 c S § i 89 1 g§ ah 1 1 80 1 1 S 6 .7 .a 1 s «8 i i 1 88 5 1 1 84 •i 1 US A & 1 i I i 1 1 86 Oi 1 1 i \ I 1 87 i •3 Q 1 1 1 88 § 1 of 1 1 >> 89 P. 1 a o '3 £ H 40 A » 1 O ei a ! ^_ > s a 41 a u 1 B a 5 1 •s 48 1 ♦I a 48 i i 44 1 5 4S o o 1 2 40 i < i 47 i 48 i3 1 < 1 § 49 1 8 8 M SO 0.* 1 a i 1 s tl g s 1 1 S8 1 fff ! 8H + 89 + 90 + 91 Kl + 9R 94 + 9(( + 98 + 97 + R8 + 99 + + inn 101 + W' ■ ' + + im 104 + 105 + inn ... + + +0 + inr in8 + + iin + 110 + + lit ! 118 + 118 114 ... + lU 148 THE LATER EXTINCT FLORAS OF NORTH AJ? ERICA. List of «/«'(wc.s, nhineiiig localities ue 94 iir 95 118 95 119 96 m 97 121 98 122 99 123 ion 124 10) 125 101 12B 1(12 127 103 128 105 129 1(W 131) 109 131 no 132 111 133 112 134 112 135 113 136 113 137 114 138 116 139 115 140 116 141 in 142 117 148 118 144 118 Species. MagTiolia obovata Xewb Magnoliii rotnndifolia Newb Liriodondron Meekii Hoor Liriodeiidron primaavum Newb BerberlB simplex Newb SasHafras cretaceum Newb Sassafras cretaceum recurvatnin (Lesq.) Newb, Cinnamomnm Heerii Lesq Liqiiidambar Europiuum Al. Br Liqiiidambar obtusiloVmtus (Heer) Uollick Plai iims Bspera Newb Platanua Haydeuii Newb PlatatiUH latiloba Newb Platanua nobilis Newb Platanxis Raynoldsii Newb PyruH cretacea Amelaiichier similis Newb <;ratn?BU8 flavcscens Newb Pruims variabilis Newb Cassia sp. ? Newb Lctfuminosites Murcoaanus Heer Rhus (?) nervosa Newb Acer SI). ? Newb Negnndo triloba Newb SapinduB afflnia Newb Hapindua ( ?) m*'mbrana<;eu8 Newb. RbaninuB elegaus Newb Rhnmnna Eridani Ung Rhamnltea concinnna Newb TAHLE OF DISTRIBUTION. 149 vientioiuKi in the te.ft — Continued. ■ o d .S 1 U K >. 1 19 d .2 S 1 d 1 s a 1 80 d .S a 2 d 1 1 : I 111 9 i ( w . ;■ 1 £ ! 1 « 84 .S d 1 i 95 d 1 1 i o m 26 d a J 1 1!' S. s d 87 Si 1 28 g 1 I 1 1 1 ao 1 S, d 1 a « so 1 1 g 1 o ! 81 a I I 1 S8 1 i 1 88 >• 1 i 1 1 84 a i O 1 8S 1 Gs 1 i I 1 i 5 k 1 86 d § I i 1 !^ I 87 d § I i ta u o 88 d 1 1 1 > I 1 I 89 1 1 1 i I 1 s C3 A 40 d s a ei a 1 « 41 d 1 1 4S 1 1 d 1 4S 1 1 1 u 44 s 1 5 46 i 1 i M 40 » 1 01 47 i a -. 1 3 ^,5 Sills ^ u 5 4S; 44 4fi SO 51 ; 58 146 146 147 148 149 ISO 161 162 168 164 165 16« 167 168 199 101) nil ItCi 163 164 165 166 187 168 lae 17U 171 IK 173 174 '4 ^1 n -Li i T PLATES. 1S8 1 - _ - , 1 i E [ • Jl I lip I i' i 1 1 L. J 1 PJ.ATE [. m % ■*'(: PLATE I. Page. Fio. 1. Quercus salicifolia Newb 77 2. Nysaa vetHstH Ne"'l) _ .' . 13,5 3. Fagns cretacea Newb OH ■1. Platanus latiloba Newb lOo 5, o.i. Araui'ariiv spatulata Newb 17 0. Sphenopteris coiTugata Newb U /. PyruB cretacea Nowb llii 150 ipiiyipiilHBinpiiJii^liipi^fpij 135 08 10.-. IT 14 no PLATK wisr B n l«ir * Sou, l\t)^ > 1? f '•11 "^-■■r f^^F;^»,r'TFifi7iyawr''?r:'TTJMp5?^^ |^-V~S«wK'*t"' " PLATE II 167 /-f^Ii','''^: A^ «/r. 11 ■ )' .-'IJr'v I If PLATE II. Page. Figs. 1,2. Salix cuneata Newb 55 H. Salix MeekiiNewb 58 4. Salix flexuosaNewb - 56 5-8a. Salix membranacea Newb 59 168 J T!r!'™W^^5PPin''^'"rTww«p^WWi?wwT-n~1li:!^^ (HKTA( HOI'S. I' 3^1(1 y 1 '?7^*r; PLATE III. ISO M •■ T'^fi-yyir-^r' ,f!LSUBVE"i T' L A T K I T I . Pim.'. Fills. 1,'J. Populns cUiptii'ii Nowli 43 3, 4. Populus cyolop}iylla Heer 41 •C. ■^li ' n-^i ■- * • '.o» 5- Popiilns Jiiioiopliylla Newb . 4tt L'^t-.o'y ?>■•<"••« 6. Populns litigiosa Heer 45 7. Populus (?) conlifolia Newb . 40 8. Phyllites Vanonie Heer ■--..- l!)(l 160 K-ji- t •'■ - » -- '■- ^ ■ ■-'*'"• 'j w^,- >,l*(.l -...,....- >.c*-^ »...•■•• \ ■ "V» '■ '^- ^7T^ - IIL SURVEY OF THE l^RRIT0RIEi5 CHETACKOJJS. ( Diiknt'i Orniip ) PLATK III II Tho» Bift-Wr h 3ni.l.i(h / '*>!; I^LATE IV. 101 yios XXXV 11 .^^^H i 'l^^^^^^^l IMAGE EVALUATION TEST TARGET (MT-3) 4-- lii 1.0 I.I 1.25 ^ 114 1.4 2.5 2.2 2.0 lii^ V '/ y^ Photogi^hic Sdences Corporation ^ ^Q V W^ '^ii|> I T.ATK VII T.Sinclair 4 San ;:.th PhUaHrt wmm PLATE VITI. ie» - . r 1' . . ■ » • '^BBBBBW [■ . ■ ^i r L A T E VIII. Figs. 1, 2. Sassafras cretaceura Newb. 3. Populites eleKans Lesij ? 170 Page. 98 54 >^ . i---'^-y^' Ea' U 3 GEOL SURVEY OF THE TERRITORIKS CHETACEOUS. I Dukoln Groiin > PLATK Vin ■ilS-; 1 i^'-i';. ■■ti: J • TtMm iiineUli>« Son.Lilk //*i-*^*-j;4'..v.,.ii'-.<.r , iiMwn ?n PLATE IX. 171 ; L ' I - ■ ■ ■ |1 ■ ' , ■ • - l\'. f PLATE IX. Page. Fio. 1. Aralia i iiuinciuepartita Lpsij 138 2. Sassafras cretaceuni recnrvatum (Lesq, ) Newb 09 3. Prctophyllum mimis Les(i 1H3 173 OEOL SUPVIT OP THE TEI-tRITORIEB CHKTACKOI'H. I Diikoln ('•roup. I Vl'.ATK IX Thoi Kinclair Mlm l.tlh f'm ti, PLATE X. fi 178 "^^^1 P ■H p r. A T K X Protophyllnm Hteriiborgii Lesii . 174 188 US GEOl, PURVEY oF THE 'I-ERRITORIKK (•RKTArr.tHtH I Diikitlii (irtiiiii I ", 1.1 PI.ATK X T Uinclair J^ot. Ijith Vhil.H.i «f PLATE XI. 175 It' ' ■i^te ^^^^^^B' i^^BH ^I^R^^fi' |^^^K%7c ^^^^^^■Ri ^^^■^^Mm 1 ^1^ "^ M^-.Mi^i. "fc I> I. A T E X T Prctophyllum Stern beigii Lesq . 176 Page. 133 ,E '1, .-.UHVFY UK 'rilE 'reRKITOiVII' CRfiTACEOUS m PLATE XI m I 1 t '*■ it Mil T LiiTi<;l.iii i Son.I.itli Philada *i PLATE XII. HON XXXV 12 ' ' ' U-l" % PLATE XII. Pago. Fio. 1. Magnolia ellii)tica Newb 94 2, ;i. Ficns retieuliita (Lesq. ) Hollick 88 4. Liquidainbar obtusilobatus (Hcer) Hollick 101 178 V i! GEOL SURVEY OP THE TERRITORIES. CRETACEOUS. I Dakota (>roti|i I PLATE XII *, 1^ ■ wMkf- ■■" 11 i 'f u IT Sinclair A iJcm,Lith Philada «r PLATE XIII. 170 1 PLATE XIII Fio. 1. Qnercus ainnata Newb . 3. Quercns anti(iua Newb 3, 4. Salix flexuostt Newb . 5, 6. Salix foliosa Newb 180 Pane. 78 60 50 ',E )1. SUFCt^ Ol'^ THt; 'nj;RHlT;)KlKl CHETACKOI'S lliikiili. (•roii|i ) pi.ATK xm 11 iCi T SiTiclmrA Son Lith ?hilada ii mm «i ■i i^-.~- PLATE XIV. 181 W ' ; ;'■ 1 Mi if if it i i l' kr. till HP /^ nnffii' X «■ -/5 *t PL A.TE XI Y Page. Fio. 1. Salix flexuosa Newb 56 2. Myrica(?) trifoliata Newb 87 3-4a. Se(iuoiacuneataNewb..../^'l*.?ftA'«.*.-4i'.'-* <:.v.rLc^='J^.l'^^>v\.CL«:i*- 18 A'-^r.-i ^ ■» ^ 5 Abiptites cretacoa Newb -.-- 18' C. Sequoia gracillima (Leaq.) Noyfh..\i.\..l.j!.t:^.^.'rt\\.-cs.P.±'i-(.C^'.i\uu^ . 19 vW ha.-' - f OT)#Cy 18a '^' "\ ^i^'W rf^v^^T^ %'Vii^ 5'-. ■•■* "" r TW^mt'^-^^n^!^:^' 1^ ,sr.i ,;U''m;7Y' "F THE 'I'ERHITORIE!- (.UKTACEOliS. I Dakolii Cii'oiiii ' PfA'I'K XIV itTi m - f' Wl), n.-inJ- PLATE XV. 188 \ ^^H ■ : f H 1 nB b -JaB "^^jj f im i'.. .-'■•tr"-'-' f PLATE XV, Pias. 1, la. Anemia perplexa HoUick . - 9, 2a. Nilssonia Gibbsii (JJJewb.) HoUick. 184 Page. 3 16 ■fV. ii: US GEOL SURVEY OF THE TERRITORIES CRETACEOUS. ^■r'\ <,,^;-v. v.." . s'-'- ■?■■■ V..J >■■'■ 'tt -' ■ ^ Y M'- 4 A k. ■■■ &i- ■ ¥'.- PLATE XV T Sinclair* Snu.H.h Phtl^Ja f PLATE XVI. 186 31 ' i i rf! w ^y '> PLATEXVI. Page. Figs. 1, 2. Eqnisetum robustmn Newb 15 3. Anemia perplexa Hollick.. 3 4, 5. Aspidiuin Keiinerlyi Newb 11 6, 6iv. Sabal imperialis Dn 30 180 ' l".':'"' - Ji- U ii ChOL SURVEY OF THE TERRITOttlEti^ CnETACEOlTS. PLATE XVI T. I'uiclmr S!!o:i, Li'h 'h-juli " :( PLATE XVII. 187 rr iijp «-mf"m,.i J. ujiim':. a"JJ.'i •:«■.* % PLATE XVII Fias. 1-3. Cinnamomum Heerll Lesq . is. NyHsa (?) cunoata Newb... 188 100 135 u.s liEOL yuR'/r.I.ith 'i , PLATE XXI. 195 •/, P T. A T E X X I . Page. Pios. 1. 2. Sabal Campbell J Newb. 190 "f^ GEUL aURVK,Y OI-' THE 'IT'lRRITORIEt' CRETACEOUS. Pl.A'l'F X.XI Thoa hinnlmi- ti H-j,, I i '^||ippppiipiilip»pBPiipppp"i«P*"'"^i«W9"asi«wp^ PLATE XXII. 197 I. j^l ! 1 ^m^mifmimmffim fBiipi!Ii!ppilWipp*!W«?l«!W?(P!«wpPBlWWP«W PLATE XXII. Page. Fio. 1. CabombaC:) gracilis Newb ^^ 2. Cabouib!viiiermi8(Newb.) HolUck 3,4. E(iuisetmu sp. ?Newb.. 5,r)a. Phvagiiiites sj). ? Newb ' 6. Iris sp. y Newb- 108 - 'iK)W»Mv.«uwfl'V^?W.vi^r?T'*J«< .'r^'^'lJWJ'yi'r.-f "tJItUJI "^."^'-IlJf^W,'-" ■p GEOL SURVEY OF THE TERRITORIES, TERTJARY PLAFE XXII w . 3 * T Sinclair i Sniiis (Newb. i Hollick It'' 3. Onoclea seusibilisfossilis Newb ** 4. Onodea aensibilis L. ( iiitnuluieil for couiparison ) 5. (!i Onoclea sensibibs obtusilobatus Torr. (introduced for comparison) 200 ■ If >S II i 1WI|-.".1"U w^ "'ir^fryj"^ f ' ■n GEOL SURVEY OF THE •reRRITORIES TKHTIAHY pi.A'i'K xxin.. T.Sinolair 4 Son.Iiift. Philad* f^lwp^BW"^ »,.Upi,»ftJ ^mmmmmwm^f'^mmmi^mr^mmr h I PLATE XXIV. 801 h f !j H lit; r fl| PLAT K XXIV. Page. Fill. 1. Onocica sonsibilia fossilis Ncwb .. 8 2. Oiiodcii seiiHibilJH foHHilis Newb. (swiurait of frond) 8 3. Onoclea Heiisibilis fosgilia Nowb. (pinna deeply cnt, with elongated areolre) 8 4. ."). Onoolcn senaibilis fos^iliii Newb. i bases of upper and lower piuuue) - 8 203 rKMTIAMY /^s^./-" ^^r m «H PLATE XXV. 808 ;sc;eol s I' L A T K X X V Pnxc Sal)al grand ifoliii Newb Mi hi Ih'fH^m^i •S GEOL. SURVEY OF THE TERRITORIES TEFtTlARY li«.'i,SH.!.,Vi■^l^vji" PLATE XXVI. ao5 P L A T P] XXVI. Pago. Fws. 1-3. Taxodium occidentalfi Newb ll.'p:t.'^Ji^.y^.'>.Vi-...i^.i-.^JAi&::Ml'A 23 4. Seiiuoia NonU'iiskioMii HeerV (^.!.'^if.ip.'^.ttP.hP....v',:i,.'^Ay. K <«/. 1.0 >.l 1.25 IS 121 125 ^ li |2.2 •" — '""2.0 ■ Hiotographic Sdences Corporation 23 WIST MAIN STI^'ET WEKTfR.N.Y. USM (716, 872-4503 yj m ^\ ^ ^ ^.' ^^V "'.'"■ PLATE XXVIII. MON XXXV 14 S09 '.jii^ ^ 1 PLATE XXVIII. Page, Fig. 1. Popjilns nervosa elongata Newb ■ 49 2-4. Populu8Cuueata Newb -.- '^^ 5-8. Pojmlus acerifolia Newb 37 310 S JE'.'L SUFA-EYOF THE TERRITORIES TKMTIAUV PLATF XXVIII T BincUir & Son.Iiith Phdada «(*•. PLATE XXIX. su PLATE XXIX. Page. Fias. 1-4. Popuhis lotundifolia Newb •''1 ">. Populus siiiiliicil'olia Newb . •"><* 0. Populus cordMtii NewV) - ■ 38 7. Poinihis oiiieata Newl) »1 8-10. Corylus Americaua fosuilis Newb i PLATE XXXI. 215 li ap*' -'^TWwm«nw«ni"»iPW»«P"^pfw»- mj^M/;i[^mm,^ -IS PLATE XXXI Pigs. 1-4. Carya antiquornin Newb . •J. Negundo triloba New D . . . 310 Page. i!.-) 115 Uf! 'X'-'L SURVE^Y (IF THE TERRITnRIEt- TKHTIAHV PI. ATI-; XXXI ;t ' 1, ')K0B ^Lr,.-Uir I !'nt> 1 ith w^ ;■ A PLATE XXXII. 217 1 i 1 1 -f. ' T^fi'^^^'^-VJf- PLATE XXXII. Page. Flas. 1-3. Corylns rostrata fossllis Newb 63 4. Corylus orbiculata Newb 63 5. Corylas MacQuarrii (Forbes) Heer 61 ai8 us i.iCOL KUBVI',r OF THK 'IT.RRlTORtEK. TKRTIAHY PLATE XXXU ■; ■ 1 TKo« Km'-Uir * Pjri l.ith mrv % t,. PLATE XXXIII. i I W^l 319 — U-- \ t' i ill . ..iHiUiiriil m 4^ ^■p— w*wiR« P L A T E XXXIII. Page. Fms. 1,2. Viburnum iintiiiuuiu (Ni'wb.) Hollick 128 i(,4. Pliinerii iiiicrdiiliylla Newb . 81 5.0. Rhus (?) nervosa Newl) 114 7 (8yj. liUamuites concinnus Newb 118 0. Viburnmn aaperum Newb 130 10. ViburnJini lancooliituni Newb 131 11. Alnus .serrata Newb 60 ' \ \-i an HUHVEY or the 'CRmnToRiKt; TERTIARY Pl.A'I'K XXX U P ■•- m ■;>,.• G..: ;»., s •.:.„ I . *, ! 1 1 ^-« ^ jV i ■ 1 m '11 ■; 1 I. 1 ii 1' f ! ri PLATFE XXXIV. mi I ■ I ' i ■■r-F— ■■^^•sw ).,.'■.■ 'M PLATE XXXIV Platanus nobilis Newb , Pftge. 106 THK 'IT.RtvrrcKIKi- I'KHI'IAH^' Fr.ATE XXXIV THinclair ISo.i. Ullh Philnda r t 'i' ''J •I I its' 1 1: r''T«iP^=p.?»!;:?7?i«rr'"=!'?T«7^ m PLATE XXXV. 8tt ' " W^^Z^^yif ^Jiir^Bf^^WS " PLATE XXXV Platanus Baynoldsii Newb. 234 Page. 109 US f'EOL SURVEY OF THE TERRITORIES TEHTIAnV PLATE XXXV ThoB 6inolBii' li Son. Li(>i ti i 1 1 1 ■ b-i^.. PLATE XXXVI. MON XXXV 15 .ii 1 ;l i ■^^^^^1 1 iBjBHB^K ill 1 J w P I. A 'I' K X X X \' I PlatHMUB Huj'deiiii Newb . ■,'2(1 i(i:) I';-;. C.tOL .SUHVKV (jF THK rHKRlTORlEi TEKTIAUY rr.A'i'i' XXXVI T> ■ p y PLATE XXXVII. ^"ST i 227 n I' i. li P Jm !' I. AT K X X X V I 1. Fid. 1. Platatins iiobilis Ncwl) ■ 100 3-4. {'orniiH Ne\vl)erryi HoUick ^ 134 ."(, (juorcns (lul)m Newb 13 338 f\ ^8 CEOl, SUPVEY OF THF 'If.rmn'OHlEK. TKMTIAKY •■'.ATK OXVII TV«« Hin;'»Jr» .'-m.LuK mm hmm m >!ir'lhSjn.Lilh PLATE XL. 23;{ EH- V 1' L A T K X I.. Fui. 1. ("ariiolithes liiieiitus Xewb 138 3. SapiiuluH aftiiiis Newb . - .■ lift 3. Ciilycitt's polysepala Newb KiO 4, 5. Araliii triloba Nowb ..- 13.1 0. Amt'laiu'hier siiuilis Newb Ill 7. Aristolochia cordifolia Newb !I0 334 W: V .■ lb (I, ;:UFM-'.Y OF Till'; ■ITllvui'f'ilvlK!' TKrJTIAJIV ' 5 Kimlwr * ft...,.L.th I PLATE XLI. m gr i'f4 : P L A T K X L 1 Figs. 1,2. Phyllites carneosiis Newb . 8, 4. PliylliteH cui)anioiile8 Newb . a3« Page. 134 135 A u >-!, (JEOL supve;y of thfj 'ii;rkitorie TEfiTIAKY PI AI'K >'l, 1 iiit ' (|S'^,'5Wvp'' *• W*- ' H '" ' V P L A T K X L I I Pios. 1-1). Platanus aspera Newb 838 Page. 103 l^ic i c. V* o< a n. t dct^^-ri. I,; . /... n)c. ne _ K^ us C.EOL SUPVITt' OF THE TFJiRlTORlEt; ri;iriiAin PI, ATI : XLII lit m Hf''-" ,)• T. flmclal! & Son lllh PhUa'U ''■'/■ PLATE XLIII. yi I w k P L A T K X L I I I . Pago. Fid. 1. Quercus pancidentata Newl> . 76 3-5. (juercua consiiiiilisi Newb 71 (t. Quercns simplex Newb ... . 78 7. Acorn of (juercns consimiliK Newb. 72 8. Cnpule of Qiiercus consiinilis Newb 72 0, Base of acorn of Quercns conaiinilia Newb , 72 10. Interior of cupula of Quercus consimilia Newb 72 240 « I;:: us ijEOL survey op the territories TKKTIAHY PLATE XLIII T air.clair* Smi Livii Phiiada jU,!^" *"^- I i^^Viii -.ivoLJ^'^. MON XXXV 1(5 341 /,'■/ T^ LIT W; jBg ^^H. :, iiH^^H- ,. '^^^^^^^H ■ : - ^T^^^^^^H i^^H f^^^^^HI K 'I'^^^^^|h> 1 L, ■ • '-i 1' LAT K X L I V, Fkis. 1 I. I5ct\ila hfterixldtita Nowb_ 5. Plntuims usperu Newb 243 . _., P«(fO. 102 ••J /^CL- V.T '• /<-■ :' '.' N /.a /, , , y-'« \:v '■.v)i >suB^r,Y ^v the ■rERKiTORiEs TKUIIAin PI.ATK XMV - PLATE XLV. 243 '. T">H •'-•r <'■ I ^ki II , ) viBi It f:f * r P L A T 1-: X L V . Page. Fio. 1. Betiila heterodonta Newb 64 '■3-5, 8. Ulmus speciosa Newb __ 80 I). Fruit of Betula heterodonta Newb 65 7. Fruit of Ulmus speciosa Newb. 80 344 1^* US r.EOL SURVEY OF THE TERRITORIES TKFJTIAllY "PLATE XhV / ^4 I 1 i A \ ,1 IJ' p pi WW M' i i PLATE XLVI. 345 ■' Wn 'i SIR PLAT E X L V I . Page. FlO. 1. Ficns planicostata Lesq 88 •,'. Qrewia crenata ( Ung. ) Heer 120 8, 4. Populns polymorpha Newb 50 i). Betnla angustifolia Newb 03 0. Alnus serrulata fossilis Newb 66 7. Frnit of AlnuH sp. ? Newb 07 8. Fruit of Acer sp. ? Newb 115 9. Monocotyledon gen. et sp. ? Hollick 83 10. Fruit of Cassia sp. V Newb 113 240 US CJE'JL aUP\'EY OF THE TERRITORlEf, TERTIARY PIATF XL VI m PLATE XL VII. 247 /', J 'ii 4 l! P L A T K X L A' 1 I FiQK. 1 , '.'. Li(iuidiirabar Etiropipum Al. Br 3. Fruit of Liiiuidambiir Europwum Al. Br ... 4. Populus pol yinorpha Newb ... 5. Betula aiigustifolia New!) 0. Ta.xodium diHtichniu niiocenum Heer ...\..A'.:\.i'.%yi^i.x..j..u...'^'i-lJjJi':.. j» 7. Fruit of Seiiuoia Heerii Le8q..^."\.e +?..S?..4|.|^4>.1»-. e.tt.L J.?.:Oi'. S^u,r:, ./ayJ^r/>. . S^'. 71 S. ?lJ /fU^J /^' i^" Pwe. 100 100 50 m oo fi »'»••'< ' 20 a •■ 1-r> C V,; ., (C //^^ / ,af- ^l. /-.^ii;: U3 OEOI. SUPM^y oF THF, TKHH'T'Jl.lEh- TKHTIAHY PLATK XLVII «, li PLATE XLVTTI. 340 i ■1 i 1 HBi ! HE m .^k .;* "- t«^''^T ■^V',^7Ip=72v:*^^ .., ,, ''''<^;;.57;^^0 5. Frasinus afflnis Newb Vi7 0. Fraxiuus denticulata Heer? 12S 252 ■i. .■■■'Jr\in (-'F THE TEFmiTORlK^ 'JliiniAMY PIATK XlaX \'}^ ^.-■^ ,-ijl r-- . -■-v-T;jr''-''--7i^-*.-™-¥7r-^;y?^7:"'T!PP wi" li I ^\- '-^vMfi:^'' TUSPWPPPiP? PLATE L. 353 ,/ « . » ^B; - ,4. P L A T E h . Fid. 1. Plntanus iiobiliw Newb . . y. Rbamnus elegans Newb. Page. 106 117 '.': '.X'':. .•■URVEV up thk 'ri'.fnuToRiK. THiniAin r^m^mtw' ■* i mm^ M PLATE LI. wm ...SU ^r.y^ ^-'^. .0^,'^*^^^^ IMAGE EVALUATION TEST TARGET (MT-3) ^ 4 ^ .J^^. / 1.0 1.1 lis 12.8 |50 "^^ 2.2 Hi 1^ 12.0 IL25 i 1.4 1.6 Vl 9 /2 c / Sciences Corporation ^\^ ■4 # - « ^ATo' •S'.'S, 23 WEST MAIN STREET WSBSTER.N.Y. 14SS0 (716) 873-4303 >>^ ,«'. rT.- 1 I P L A T E L 1 . Page. Flo. 1. Ficn8(?) Alaski- uiNewb 84 S.inpart. Vitis rotundif olia Newb 120 3, in part. Jiiglans nigella Heer 33 3, in part. Quercus Gninlandica Heer... T.'i 3, in part. Taxodium clistichum mioceniim Heer 3? 4. Juglans nigella Heer 33 356 i • I ill 1 t * ' i 1^ i. . A- U.S. OEOL SURVEY OF THE TERRITORIES TKRTIARY PT.ATE LI T fitnoluir i Son lltt. Phijada 1 1 ; ^ .;i:| - - ji- ._ p^r, ■■ B l^H m i Pl ftff u»a m PLATE LII MON XXXV 17 257 I^Mk t.. 1 1 i^B '' » .ill II P L A T K L I T . Pttge. Fin. 1. FicuB(?) Alaskana Newb 84 3, 3andl inpart. Tiixodium distichum mioceimmHeer. .,.7!.'i J?.i.u.:r\ 8i cT'-.tlv \.-i h 0. Fniiw of Sequoia spinosa Newb--7]?^ ?.p.'^iy.>x\ ..'.^..-".tj.*'.'".'; m '' 0. Celtis parvifolia Newb 84 { i-- ' 2GU pf V 3 GBOL SURVEY OF THE TERRITORIES TERTIARY PLATE Lltl T Sinclair i Sf)r.7,it>i Philada II |l It r ■■ - i - h' :, ... f-'-m'i^mwr^'mmmiimf^llpi^mii^ PLATE LIV. Fios. 1,3. Qiiercus Grtinlandica Heer 3, in part. Carpinus grandis Ung 3, in part. Si-iilas cyclophylla Newb. 4. Ptcrcspermites dentatus Heer Page. 75 59 82 13a lEOL SURWY OF T.HE MERKlTCjF.lfl; TERTIABY FI.AI'K Liy f i'.- T Smd;ur i 3oii.I.i'l; '".iiU'J ) PLATE LV. si m P I. A T E r. V . Page. Figs. 1, 2. Ficu8(?) Alaskana Newb H4 3, 4. Glyptostrobus Eiiropwas (Brong.) Heer 24 5, in part, Taxodinm occidentale Ne\vb.-.IiL^..;/-.5/?4'-0"i*-'-^-. .Ct.Li^f'i}.Hm 0.') } ■ ^ ■ ! : . 1 1 1 . IMim . '■', J PLATE LVIIL aeo " "5 ' I ^ JIPK __— ^ '^^ PLATE LVIII. Fui. I . Picus (?) Condoni Newb Jfoga. iJ. ProtoficHs imequalis Newb " ^■' ii. PlaneraloiigifoliaLesq. . .. ^^ 4. PopuluspolymorphaNewb ."" " ^' 270 "■ - 50 m V S GEOL SUP\'EY OF THE TERRITORlKt; TKflTIAHY >r.ATK LYIII ■■r. PLATE LIX. 871 7k P L A T E L I X . Pio. 1. Magnolia rohmdifolia Newb ^^"; 3. Fk'us membrauacea Newb '* 3. Plataims nspera Newb ■t. Quercus laurifolia Newb. " ■'"^ 272 ^^ r '^ i fn '*r^ ■•J GKOL SUFnt^Y (iF THE 'rEH-H'TORlKK TEnTlAHY ^1 ATf. i,:x T.Slrcia-.riSo). V<\\ "' i k " % ! 18 \ h ^ i|IIHiuilU.ip,.y,,,j,J PLATE LX. 373 MON XXXV -18 p L A T !•: r. X Patce. Fi((. 1. Protoficus inuHiualis Newb SO :.'. C^nercus SuUyi Newli ■ ;q .1. (^ncrciis laurifolia Newb 70 4. Aristolochia cordifolia Newb Oq 274 ' ,, ■iilOu .^UHVFx-or THfc-, •l'EI?Rri"-)FIt:.S TKHTIAHY ■ ■ y ■ ■ — — «ri 1 PLATE LXT. 975 ■^ ■ --■ < % . : ': PLATE T. X T Flos. 1. la. Pteris RnsHellii Newb 2-5, Acrosticham heaiieriuin Newb . 378 Pago. I U.S. GEOLOGICAL GUR^/FY CRET.&: TERT. FLORA PLATE LXI it I T.SmoUlrkSon. Lilk FhlW. TERTIARY Ij PLATE LXII. P L A T E L X 1 I , Pigs. 1-4. Lygodiiim Kaulfussi Heer 5-6. Pecopteris (Cheilanthes) sepulta Newb. 378 Page. 1 13 1 1 1 • ,t fe' m i U.S. GEOLOGICAL PURVEY CRE'r.&TER'r.T-'IjOPA PLATE WXU W TERTIARY J' * '<■ !• PLATE LXIII. 279 i 1 2 1 ^ ' i' t' f " >l P L A 'I' K L X T I T . Figs. 1-4. Anemia perplexa HoUick ''"*^'"; 0. Sabal jjniiidifolia Newb. . 0. Sabnl Powellii Newb '^^ 380 •"• .S. GEOLOGICAL SURVEY CRET k TEF-^T, FLORA PLATE LXIII 'M'. T SmcUir Sk 3on, Lith . PKili TERTIARV i ill: PLATE LXIV. 381 ! iliii P L A T K r. X 1 V . _, Page. Fids. 1, In. Sabftl Powellii Newb ;. .,„ 2, ia. Sabul grandifolia Newb 2^ 3. Miiiiicaria Haydenii Newb H a83 II .'3 GEOLOGICAL SURVEY CREIT.&TERT.FLORA PLATE L.XIV 4 !i mm I T SinoUir It. Son, LitK PhlU. TERTIARV \ PLATE LXV. 283 I P ^" PLATE I. XV Pio, 1. Juglans occidentalis Newb ''**!", 3. Salixangusta AI. Br.?. "" ' 3-5. Zizyphus longifolia Newb j'^ 6. Quercus castanoides Newb " 7. Eciiiisetnm Oregoiiense Newb 8. Equisetmn Wyomingense Lesq .. 384 ^" T-' '^dtt ^?l ' "U U.S. GEOLOGICAL SURVEY cret.&tert.fIjOra .plate LXV 'I'. Sinclair 9v5or\, Lith.Philk TERTIARY 'i i PLATE LXVI. W' 385 PLATE LXVT. Pag.-. Fi<*s. 1-4. Jnglnns occidentalis Newb 34 4a-4c. Fruit of Juglans occiileiitalis Newb , ;t4 5-T. Planera variabilis Newb 88 380 li ■ i - ' ■■ ■ ■ US GEOLOGICAL SURVEY CRB^T.icTERT.FLORA PLATE LXVI ^•J„..ni5 ■pia.vie> *. U-^ar^l'i T. amoUit St Son, Lith PKi\», TERTIARY IJ) I i 1 1 I ^flP!IF!fP»fl«'.Hl-,!„,,IJ WUIWIR.JI "UW* 4 ,1 PLATE LXVII. 387 lt\ ir; "I :r.:--^^s4m -,.:y' "/', r LATE LX VII. Flu. 1. AraliaiiiacrophyllaNewb **oi 3,8. Plaueni nervosa Ne\vb..21ci/iS.".Ai, Li.'-'i.'.^.'SJii^. a" 4. Querciis gracilis Newb „. 5, 0. Ficus asarifolia minor Lesn q. m ■ ^'^ US GEOLOGICAL SURVK'i' CRE'",,VI'RPT FLORA VLMli UXVII '. Sinclsit i Son, Lith . Phils ^TERTIARY PLATE LXVIII. MON XXXV 1!» i'! PLATE L XVI II. Page. Fio. 1. Aralia macrophylla xifewb 13^ 2,3. Carpolithes pinosus Newb 13g 4-6. Nordenskioldia borealis He«r j37 7. Brasenia CO antiqua Newb 93 '290 >^>^> S, GEOLOGICAL SURVEY CRET.A: TERT.FIjOPA PI.aTR LXVIII T. bindiiir ft iion, LilK P\\Ua TERTIARY ^ INDEX ii s'i| [Genera and all divisions of higher rank are printed in sM\t.i. capitals; synonyms and names of species to wW<* incidental reference is made, in i(o(ic«. HeBrr-raced figures refer to pages on which descriptions are given. J Adjetites creiaceaNewb., PL XIV, flg. 5 Acer — macropKyllumPvTsh pgeudo-Platanut Ij sp.? Nowb., PI. XLVI, flg. 8 lis Page. 18 18 115 106 38 ACEHACE..G Aceriteapristinusifevfb ACROSTICHUM aureuniL uesperinm Newb., PI. LXI, flg8.2-6. Adenanthos mneata Labill M»culua Hippocasfanum L- llfl 101 U « 52 30 AliDmaPlantagol, 137,138 Alnites. 67 grandifoliaNewb., PI. IV, &g. 2 •T .Mac ^larrii Forbes 81 Alnus. H5 AlaaWana Newb., PI. XLVIU, flg. 8 65 cellulnfa ^S Kiefferateinii Vng ^ noatratumXJng 8* serrata Newb., PI. XXXIII, flg. 11 6« scmi/ntaWilld *> serrulatatossilis Newb,, Pl.XLVI, flg.0 66 sp. ?Newb., P1.XLVI, flg.7 6» Amelanchieb Ill C(mnrf«i«i« Medic HI similis Newb., Pl.XL.flg.a HI AnacardiaoevB 11* Anemia ^ perplexa HoUick, PI. XV, figs. 1 : XVI, flg. 3; LXin.flg8.l-4 3 «tt6crf""a(8ap.)Oard. &Ett 3,4,5,8 Anoiobpekm i: ^ m ,.sq 181,133 ....; i«3 Aralia ang\tatilol}^ concreta Lt - — cuneata Lost ijrandifoUa ^ - Kercutea (Van: -&p jatropbfvfolia it. B. & K inaerophyllaNewb.,Pl.l,XVn, flg. 1; LXVIII, flg 1 notnta Losq nndirauUa L - quinqueiiartitftLesq., Pl.IX,flK.l IKJ, liia racemoaa L 1*** ro JundA(^E.V 83 IniR 3;l sp.f Newb.Pl. X.XII, flg 6 33 JlKll.ANIIAC^E^ 83 JUULAMS JJt ciirriigatn Lndw 36 liebeyana Heer 42 INDEX. 29S 1; LXVI, Jooi^NB-Contlnued. ^m tewi»a(o Brong * lafi/olid Hoer ■ nigellaHeor, PI. LI, &S»- 21n part, 4 3a. » . T nigra L occidentaliB Newb., PI. LXV, flg. flga 1-4 c - rhamnoides Lesq ScfcimpcriLeaq LA8TIIKA (OONIOPTEIUS) Fischer! Heer, PI. XLVIII, flg. « *»•" Qoldiancl Lesq - jufprnipid'o L™q KniaMiana Newb LAUHACEiK Laurophylhuii reticulatum Legq.. Launwpri'Hif/cniaUng LE0UMIN09/K Jjj^ I.E0UM1NO91TE8 - ••" _ ,.1 Marcouanus Heer, PI. V, flg. 3 1 1 3, 137, l* Page. 187 34 125 35 10 11 10 98 88 68 113 LiQUIDAMIlAll ---•■ Europipum Al. Br., PI. XLVII, figs. 1-3- iii(<'(/'i/«'"'»Le8q , „,, obtusilobatus (Heer) Hollick,Pl. V, flg. *; XII flg * 10(1 lOO.llU.lOi 101 OLEACig.« Onoci-ea »«ii.i6il.« L., PI. XXIII, flg.* sensibiUs fos»ill8 Newb., PI. XXIII, flg. 3; XXIV, figH. If) aensibilia obtmllobatua Torr., PI. XXIII, flgs. 5,(1 PA2.H^' Pecoptekis (CIUEI,ANTHE8) aepulta Newb., PI. LXII, figs. 5, 5», « Tori-Uii Heer Phaseikxjamia Phbaomites ^ (Eningensia Heer "' sp. ?Newb.,Pl. XXII, flgs. 5,6a '-»» PHYLLITE8 cameoBua Newb., PI. XLI, flgs. 1, 2 134,135,137 cupanioides Newb., PI. XLI, flga. .1, 4 73, 13S,137 obcordatUB Heer, PI. V, flg. 3 11S,1U,127, ».16 ofcdwi/Dhodl.t Heer '"J rAoni6i)iVJfU« Lesq ■*•'' VanoniB Heer, PI. in, flg. H »»• veuosus Newb. PI. XXX, flg. 4 i;K,I3« 8 37 13 I'J 13 IB lOI 101, lOB Planeka. 81 atyracifiuali V" ' 95 99, (Ht 95,96 96 96 1 LIHIOUENDBON Meekli Heer, PI. VI, flgs. 5, 6 .. . primiBVum Newb., PI. VI, flg. 7 Procaccinii Ung-.- Tulipifirali Lyoodium acutanguluvi Heer " Kaulfussli Heer, PI. LXII, flgs. 1-t »»* ncuropieroirlea Ijeeq MAONOI.IA ^ acuminata L . alternan8Heer,Pl.V,flg.6 »« elliptioaNewb.,Pl. XII,flg.l "» Hiij/mdiaim Loaq ^ yordenskioldii Heer ; "^ , vr„„,i, 04.95,125 oboDutaNewb rotundifolia Newb., PI. LIX, flg. 1 »» Manicabia /orHtosa Heer ■ Haydenil Newb., PI. LXIV.flg.S MONOCOTYLEDONiB ■- MONOCOTVLEDON OF UNCERTAIN AEFtNITIES gen. ot sp.? HolUck,Pl. XLVI, flg. 9 MOBAOEAi Moru8 rubralt Myhica __ trlfoliataNewb.,Pl. XIV,flg.2 " MYBIOACE* jjjj Neoundo nccroidJ-s MOnch IIR Europieum Heer triloba Newb., PI. XXXI, flg. 5 »»» NlLSONIA - '„"^"" Gibbsii (Newb.) HoUick, PI. XV, flgs. 2, »» Joliiiatnipi Heer NoB1)ENRKIOI,I>IA borealis Heer, PI. LXVIII, flgs. 4-8 »3T w* 91 125 t9S 18B 1«S 31 32 31 27 33 33 84 129 37 crenataNewb.,Pl. LVII, flg.3 - HI emari/iiiaffi Heer ^ longlfollaLes(i.,Pl. LVIILflg. 3 81,82,83 microphylla Newb., PI. XXXIII, flgs. 3,4 SI nervosa Newb., PI. LXVII, flgs. 2,3 "Ij-?*. . Unyeri Ett - 81,82,S3 variabilisNewb., PI. LXVI, flgs. 5-7 81,83 Zelkiivae/otia Ung ^ PLATANACEyH ^^ Platanus "** aceroidf a Gtipv 1(M,105,10» aspera Newb.,Pl.XLlI, flgs. 1-8; XLIV, flg. 6; LIX,ftg.3 ••» (KMilii/idfoWard '- "' graudifolia Ung 105,108 HayaenilNewb., PI. XXXVI; XXXVIII; LVI, flg 3 ... 103,104,100,109,125 Hercules Ung 107,121,132 Jatroplm/dl ia Ung 1'"' iatilolM Now!)., Pi. I, flg. 4 »»* nobillsNewb., PI. XXXIV; XXXVIL flg. 1; L, flg 1 87,106,108,108,122 obtuailnba Lesq - ^^ occidenU,liah 87,104,105,107,108,109,110 orie.itnliaL. »'«'«'! raceinaaa Nutt- 107 KaynoldaiiNewb.,Pl. XXXV 10» recurvata Lesq P0PULITE8 cycliiphyllaHeer elegansLesq.,Pl, VIII, flg. 3 »a(ishuricB/o(ia Lesq 16 16 137 Nymphma arctica Heer NYMrH/KACEi« NY8BA cuneata Newb., PI. XVII, flgs. 4-0 multiflora Wang vetustaNewb., PI. I, fig. 2; IV, flg. 4... .. 04, 54 41 54 98 07 Populous - „ ' acerifolia Newb., PI. XXVni. flgs. 5-8 J» «»,aL «'*^'«' tittemiata Al. Br balaamifera L balaowoideaQOpp caiirfiinH* Ait cordataNewb.,Pl XXIX, flg. 38,88 corditolia Newb., PI. Ill, flg. 7; V, flg.6 creliata Ung '''.SS cuneata Newb., PI. XXVUI, flgf. 2-4; XXIX, flg. 7 41,51,53 41 44,46 46 44 40 48 294 INDEX. PoPDLUS— Continued. Pi*e. oyclophylla Heer, PI. Ill, flgs. 3, 4; iV, flg. 1 .. 41,46 Debeyana Heer, PI. IV, flg. a; V, flg. 7 4!» elliptlca Newb.,Pl. Ill.flgs. 1,2 43,4U,(>2 flabellum Newb., PI. XX, fld. 4 44,Sa - genetnxNewh,Pl. XXVII, flg. 1 44,46 heteriiphylla L "S leuco/jhi/lla Ung 88,61 Iltigiiwo Heer, PI. III,flg. 6 41,4» microphyllaNewb.,Pl. Ill, flg. 6 4« mtmolifera Ait 44 mutiihiUa Heer 41,61 mutabiliK crenatn Heer 3» Nebraacencls Newb.Pl. XXVII, flgs. 4,6. . 41, 4r ,48, ia-> nervoflaNowb.,Pl. XXVII, flgs.2, 3 41,4S nervosa elongatn Newb., PI. XXVIII, flg. 1 . .- 49 pclymorpha Newb., PI. XLVI, flgs. 3, 4; XLVII, flg. 4; XLIX, flgs. 4, 7, 8, B [misprinted 1]; LVIIl,flg.4 ao jji-udKwa Schrenk 62 rliomboidea Lesq, PI. XX, flgs. 1,2 »t rotnnditolia Newb.,Pl. XXIX, flgs. 1-4 43, 91 smilacitolia Newb., PI. XXIX, flg. 6 47,53 treniula h 48 (rem iifoWpd Mich 43,47,62,54 Zaddachi Ueer 39,48 Photokicus S9 (TcpiuldfaSap 88 iniuqualiB Newb., Pl. LVUI, flg. 2; LX, flg. 1.- 89 Pkotophyllum 132 TA!contianutti Lesq 133 minu8Le8(|.,Pl. IX,flg.3 139 multinervo Lesq., PI. VII, flg. 4 139 Sternbergii Lfsq., Pis. X, XI 133 Pbunub '12 Scottii Heer US variabilis Newb., Pl. LII, flgs. 8 and 4 in part, 5 86,lia f^irgiuiantt'Lt.. ., -- 113 PaUotnni inerme yevfh 82 Ptbhidophyta 1 PTEHIS 7 croau Lesq - 8 lienna^formis Heer, Pl. XLVIII, flg. .'i »',8 pseudo-penno'/onnia hoivi 7,8 RnssoUil Newb., Pl. LXI, flgs. 1, la 7 Ptehosi'ekmites 133 o/feniniKi Heer 132, lik dentatus Heer, Pl. LIII, flgs. 1,2; LIV, flg. 4. 132, 133 inteyrifolius Ueer 132 .ipectahilisHeer 18B,134 .s'tcni/x 1(7(1 Lesq 133 Pyhus 110 oretacea Newb., Pl. I, fig. 7 IIO QUERCUB *B ayri/olia'Sde 70 anti.iuaNewb.,Pl. XIIX,flK. 2 «9 (ispf ra Ung "•* bannsiief olla Newb. , PI. X VIII, flgs. 2-5 69 B.i.:/iii,Web n caHtanea Mubl 74 ciistanoidesNewb.,Pl. LXV, flg.6 TO i-aatunopsis Newb., Pl. LVI, flg. 4 Tl chliiroiihylln Vng 73 con,iimilisNcwb.,Pl.XLIII, flgs. 2-5, 7-10 *1,78 coriacea Newb., Pl. XIX, flga 1-3; XX, flg. 5. . *3 Dnjmeja Ung 70,72,75 dubia Newb., Pl. XXXVII, flg. 8 *3 QuERCus— Continued. F*6S, ctena Ung 73,74 elliptica Newb., Pl. XVIII, flg. 1 ; XX, flg. 3. . . »4 flezuoea Newb., Pl. XIX. flgs. 4-fl T4 Oaudini Lesq 74 Wmc/('ii»Ung 74 gracilis Newb., Pl. LXVII, flg. 4 r« QrOnlandica Heer, Pl. LI, flg. 3 in part: LIV, flgs. 1,2 T«,K) Haidingera Ett UU HeeiiAl. Br 74 ilicoideii Heer 73 imiiricaria Michx 73,78 laurifolia Newb., Pl. LIX, flg. 4; LX, flg. 3.... »6 /oncAiHdUng 70,72 Mediterranea Ung fl» J/ffiniii Heer 77 i.c'vifolia Al. Br 74 Nimrodis Ung 77 ohtutilvhii Michx 79 OZa/MjMi Heer 71 paucidentata Newb., Pl. XLIII, flg. 1 »6 Phellnah 70 salicKolia Newb., Pl. I, flg. 1 TT Safforditieaq 70 Sartorii liiebm "0 simplex Newb, Pl. XLIII, flg. 6 »« j sinuatH Newb., Pl. XIU, flg. 1 »8 I 8ullyiNewb.,Pl.LX, flg. 2 »9 i nruphylla Vng 74 i Xalapensia 70 Rham.nacg^ .. 117 I Rhamniteb 118 concinnus Newb., Pl. XXXIII, flgs. 7 (8?) 118 Rhamnus 117 celtifolin Thuuh 119 /Vc/ifiit Web 118 elegans Newb., Pl. L, flg. 2 IIT Eridani Ung., Pl. XLVIII, flg. 7 118 Fianguta L (18 Gaudini Heer (10 Rhus 114 copallina L U4 ^ferian i Henr 114 nervosa Newb., PI. XXXIII, flgs. 5,(1 114 typhina L 114 ROSACB/K 110 Sabal 27 Campbi'lli Newb., Pl. XXI, Hits. 1,2 a». 28,29,30 } S.randifolia Newb., Pl. XXV; LXllI, flg. 5; i LXIV, flgs. 2, 2a 38,29,31 j imporialis Dn., Pl. XVI, flgs. 0, Ba 30 I IxiRiaiiimixCBrong. ) Heer 28 ; maJdrUog 27,28 I Powellli Newb., Pl. LXIII, fig. 6; LXIV, flgs. 1,1a 30,31 s/j. Newb 30 SalHtliteaOrayatiualtesq 29,31 . Salicaoe^ ■. 1 37 j Salicitea Hartigii Dantt , 58 I Salix 54 i angu8taAl.Br.,Pl. LXV, fig. 2 84 I anyuati/oUa A\. Br 54,57 i cuneata Newb., Pl. II, figs. 1,3 35,66 i elongataWoh 58 j fiexuosa Newb., Pl. II, flg. 4; XIll, flgs. 3, 4; I XlV.flg.l 36 I follo«aNewb,Pl. Xin,flge. 6,6 37 INDEX. 295 BALix-Continned. P»8b. Meekii Newb,, PI. II, flg. 3 86,56.57,58 membranacea Newb., PI. 11, flgs. IWia 66,57,49 Hapini>aceai H* 8AP1NI1U8 1^* Bfflnl8Newb.,PLXXX,flg. 1; XL, flg. 2.... 116,117 denaifoliua Heer 118 liubius Heer H* fulrifoliut Heer H* membranacens Newb., PL XXX, flgs. 2, 8 117 Sai'otace^ 128 BAl'OTACITES 126 Haydenli Heer, PI. V, flg. 1 »«• m(niU8op« Heer 126 Sashafbas 98 (icuW/obum Leaq 98,09 cretaceum Newb., PI. VI, flgs. 1-4; VII, flgs. 1-3; Vni, flgs. 1,2 98,99,122 ttetacenm ilvniatum Lesq 98 cretaceum ohtu»um Lesq 98 cretaceum reeurvatum (Lesq.) Newb., PI. IX, flg. 2 »» Harkerianum Leaq 98,99 mirabile Lesq 105,106 J/udffiiLesq 98,99 nbtusitut Lesq 98,99 recurvatwi Lesq 99 tnibintegrifoHum Lesq 98,99 Sequoia 1^ cone, sp. ?,P1. XXVI, flg. 9 1» CoufJste Heer 19,22 ouneataNewb.,Pl. XIV, flgs. 3-4a 18 giyantea (Lindl.) Qord 19 gracUliama (Lesq.) Newb., PI. XIV, flg. 6; XXVI, flg. 9? •9 HeerULesq.,Pl. XLVII,flg. 7 90 lAingadorfiit (Brong.) Heer 20,21 Nordonskioiaii Heer, PI. XXVI, flg. 4 ao, 21 8I)inosaNewb.,Pl.LIII, flgs. 4,5 »! S.MII,AOE^ 82 Smii.ax 32 cyclophylla Newb., PI. LIV., flg. 3 in part aa,60 orbicularis THeeiV 33 rotundifolia L 33 Spiienoptebis 14 oorrugata Newb., PI. I, flg. 6 14 f/o»ififa rotundifolia Newb., PI. LI, flg. 2 in part; LIU, flg. 3 «ao ZizypHus 119 cinnamomoidea liQaq 120 longifolia Newb., PI. 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A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal Year 1888-'89. F. W. Clarke, Chief Chemist. 1890. 8". 60 pp. Price 10 ceuf«. If t AnVFRTlHEMENT. flS. Htrntlitrnpliy (if tlin TUtiiminniiH Coul Kiolil of I'nniiMyWnnin, Otiin, nnil Wiwt VirKinIn, l>V UriMil ('. Wliitii. IHin. K. 212 pii. II i>l. I'l'lin 20 rttiitn, TritpN of tliK Nnwiu'k HyHtnui lu tint N«w .lerany Ueglou, by NuIkoii Ilorutio Diii'toii. IH'N). M. K2 pp. i'rico 10 ii'iitH. H ill Ciilifonilii In IKMIi, by JitiiioH ImIwiiiiI Koobir. IHIH), H\ 25 pp. I'rli'c n oentx. 1)9. A (!liiHN tliti Known l-'oHHii liiHoi^tH of tho World, Including MyrlitpiHlH und Aruolinidii, by Huinmd Hiibbiird Hcnddur. IWU. S '. 744 pp. l>rir« 50 n-nlx. 72. Altitndi'H b«twu«n i.iiko Hiipcrior and Mik Kovky Moiiutaiiiii, by Warron llpliiim. 1M)1. K^'. 229 pp. I'l ii e 20 uuntH. 73. The ViMcoHity of SolidH, by Citrl liariiH. IHiM. H'-'. xii, i:ii) pp. pi. I'ricn 15 lontN. 74. Tliu Minuralit of North Curoliiiii, by l''r«diiri('k AiiKiiHtiiH (Jcntli. WH. H'. 119 pp. I'rico in cunta. 75. K'ncord of North Anii'riciiii Meology for 1MM7 to 18KII, incliisire, by NolHon Horatio Dsrton. 1801. H". IT.) ]>]>. I'riiti 15 .1'litM. 76. A Dictionary of A I titiidoH in thu United Htut«i«(Mecond Kditbm), ooinpilitd by Henry Gannett, Cllief Topouraiiher. 1801. X . :)!« (in. Price 25 coiitB. 77. The Toxaii Permian and ItH M«Hui!oio TypcH of KoknIIh, by Charles A. White. 1891. H^. 61 pp. 4 pi. Price 10 centH. 78. A Kcportof Work done in the DiviHion of (.'liemiHtrv and PIivnIch, mainly tluriiiK the KlHoal YoBf 18>«»-'90. K. \V. Clarke, Chief ChemiHt. IMUl. H". ini pp. Price 15 cciiIh. 79. A l.ate \'olcanic Krnption in Northern California and iIh Peculiar l.ava, by ,1. H. Uiller. 80. Correlation Pa|ierii — Uevoniun and (-'arboniformm, by Henry Shaler WillianiH. 1891. 8". 279 pp. Price 20 cents, 81. Correlation Papern— I'ambriaii, by CharloM Doolittle Walcott. 18itl. 8"^. 647 pp. !l pi. Price 26 centa, 82. Correlation Papem— CretacoouH, by Charlea A. White, 1891. 8". 273 pp. 3 pi. Price 20 oent '. 83. Correlation Papers— Kocene, by William Ilullock Clark. 1891. 8'>. 173 pp. 2 pi. Price 15 cents. 84. Correlation Papers— Neocene, by W. H. Dall ard (). 1). llarriN, 1892. S^. ;<49 p|i, 3 pi. Price 25 ceiita. 85. Correlation Papers — The Newark System, by Israel Cook liiissell. 1892. 8^. [{44 pp. 13 pi. Price 25 cents. 80. Correlation Papers — Archean and Algonkian, by C. R. Van Hise. 1892. 8^. 549 pp. 12 pi. Price 25 cents. 87. A SynopsiH of American Fossil, llrui'hiopodu, including Hibliographv and Synonymv, by Chorles Schuc'liert, 1897. 8", 161 pp, I'rioe ;H0 cents, 88. The CretaoeuuH i''oi'uminifora of New Jersey, by Itiifus Mather lliigg, Jr. 1898. 8 , 80 pp. 6 pi, I'rico 10 cents. 89. Somtt Lava Flows of the Western Slope of the Sierra Nevada, ('aliforuia, by V. Leslie Kansome. 1898, 8", 74 pp. 11 pi. I'rico 15 cents. 90. A Report of Worii done in the DiviHion ot ChemiHtrT and Physics, mainly . !l pi. I'rI.c 10 > cuts. lO-l. (ilariiitiiin of tlic YcllowHtono Vallf.v iiorMi of the Tark, liy Walter llarvdy Weed. 18i»3. 8". 41 pp. 4 |il. I'ricu 5 ci'iitN. 105. T lie l.araiiii<' and iho Ovorlyinf; I.ivinnNtonc Kornialion in .Montai'a, liy Walter Harvey Weed, with l{ei)ort on Flor", I>y Frank Hall Knowlton. 1893. 8. (W pp. (i pi. Price 10 centn. 106. The t'olocado Fornnitiou and its Invertebrate Fauna, by T. W. . pi. Prii e 15 cents. 110. The Paleozoic .Section in the Vicinity of Three lOiks, Montana, bv Albert Charles Peale. 893. 8-^^'. 5fipp. dpi. Price 10 cents. 111. (leidogv of the Hi;; .Stone (iap (joal Fields of Viisjinia and Kentucky, by Marins R. (Jamp- bcll. 1893. 8 >. 10hie Diotionary otf Ne« .Jersey, by Henry (iannett. 1894. 8*^. 131pp. Price 15 cents. 119. A Geological Reconnoissarice in Northwest Wyoming, by George Homans Eldridge. 1894. 8°. 72 pp. Price 10 cents. 120. The Devonian .System of E. tern Penuyslvania and New York, '.ly Charles S. Prosser. 1894. 8"-'. 8T pp. 2 pi. Price 10 cents. (21. A HiblioKraphy of North American Piiieontology, by Charles RoUin ICeyes. 1894. 8-^, 251 pp. Price 20 cents. 122. Results of Primary Triaugulation, by Henry Gannett. 1894. 8". 412 pj). 17 pi. Price 25 cents. 123. A Dictionary of Geographic Positions, by Henry Gannett. 1895. 8". 183 pp. 1 pi. Price 15 cents. 124. Revisior. of North American i-'ossil Cockroache*), by Samuel Hubbard Scudder. 1895. 8°. 176 pp. 12 pi. Price 15 cents. 125. The C.mstl'utiou of the Silicates, by Frank WiggleswortU Clarke. 1895. 8'^. 109 pp. I*rice 15 cents. 126. A Mincralogical Lexicor. of l-'ranklin, Hainpshi''e, and Hampden counties, Massachusetts, by neu.jamin Kendall EiUirson. 1895. fP. 180 pp. I pi. Price 15 cents. 127. Catahigue and Index of Contribntions to Mjrth American Geology, 1732-1891, by Nelson Koratio Darton. 1896. 8^\ Wo pp. Price 60 cents. 128. The Hear River Formation and its Characteristic Fauna, by (;harlo8 A. White. 1895. 8°. 108 pp. 11 pi. Price 15 cents. 12il. Eartlirjuakes ii' '''ilifornia in 1894, by I harles D. Perrine. 1895. 8". 25 pp. Price's cents. 130. Itiblio^rapliv and Ji.dox ol North Amorican Geology, Paleontology, i'ctrologv, and Miner- alogy for 1892 and 1893", by F -jd Houghton Wee'.s. 18!)6. 8\ 210 pp. Pric'.' 20 cents.' 131. Report of i'rogrcs or the Division of Hydrography for the Caleiular Years 1893 and 1894, by Frederick Haynos Newel'., ' opographer in ''harge. 1895. 8-. <26 pp. Price 15 cents. 132. The Disseminatc'I 'joad Ores <>i' Southeastern Missouri, by \rthur Winslow. 1896. 8°. 31 • p. I'rice 5 cents. 133. Contributions to the (.'retaccons Paleon^ologv of the Pacific Ooast; The Fanna of the Knoxville Beds, bv T. W Stanton. 189.5. 8^^. 132 pp. 20 pi. Priie 15 cents. 134. The Can'bria.. Rocks of Pennsylvania, by Charles Doolittle Walcott. 1896. 8*^. 43 pp. 15 i'. Price 5 cerui. 13.5. liib'iography imd Index of North American Geology, Paleontologv, Petrology, and Miner- ale ;y for the Year 1894, by F. IJ. Weeks. i896. 8-\ 141 np. ' Price 15 cents. 13,. Volcanic Rocks of .South Mountain, Pennsylvania, by Florence liascom. 1896. 8". 1?I pp. 28 pi. Price 15 cents. 137. The Gee.iogy of tin Fort Hilc .Military Reservation and Vicinity, Kansas, by Robert Hay. 1896. S'^. 35 pp. 8 pi. '>rice 5 cents. " i38. Artesian-Well Prospects in the Atlantic Coastal Plaii; Region, by N. H. Darton. 1896. 8*^. 228 pp. 19 111. Price 20 cents. 139. Gcoh)gy of the Castle Mountain Mining District, Montana, by W. H. Weed and L. V. Pirs- soc. 1896. 8°. 164 pp. 17 pi. Price 15 eenls. ADVERTISEMENT. vn 140. Report of Progress of the Division ofllyilrojjraphy for thnCalemlar Year 1895, by Frederick Haynes Newell, llyilronruplinr in Cliarfje. 1W6. H^'. 3r>(i jip. Price 25 tents. 141. The Eocene I)HpoHit,8 of tlui Middle Atlantic Slope in Delaware, Maryland, and Virginia, by William Hnllock Clark. IHiKS. f*"^. 167 pp. 40 pi. Price 1,5 cents. 142. A Hriot' Contribution to the (Jeolojiy and Paleontology of Northwestern Liouisiana, l)y T. Waylond Vanehan. I«it6. 8". 65 pp. 4 pi. Price 10 cents. 143. A Bibliography ol Clays and the Ceramic Arts, by .lohn C. Branner. 1896. 8°. 114 pp. Price 15 cents. 144. Tbe Moraines of the Missouri Cotean and their Attendant Deposits, by James Edward Todd, 1896. 8^^. 71 pp. 21 pi. Price 10 cents. 145. The Potomac Pormation in Virginia, by W. M. Fontaine. 1896. S°. 149 pp. 2 pi. Price 15 cents. 146. Eibr ^i^raphy and Index of North American Geology, Paleontolofjv, Petrology, and Miner- alogy for the Viur 1895, by F. li. Weeks. 1896. 8 '. 130 pp. Price 15 cents'. 147. Earthiinakes in California in 1895, by Charles 1). Perrine, .\Hsi8taut Astronomer in Charge of Earth(|ii:ike Observations at the Lick Olmervatory. 1896. 8^. 23 i)p. Price 5 cents. 148. Analyses of liocks, with u Chapter on Analytical Methods, Laboraturv of the I'nit<'d States Geological Survey, 1880 to 1896, by F. \V. Clarke and W. F, Hillebrand, 1897^ 8-^, ,306 pp. Price 20 cents. 149. iiibliography and Index of North American Geology, Paleontology, Petrology, any Arthur P, Davis. 1897. 8". 97 pp. 31 pi. 8, Sewage Irrigation, Iiy George W. Rafter. 1897. 8*^. 100 pp. 4 pi. 4. A Recdunoissance in Southeastern Wiiwliinglcm. by Israel Cook Russell. 1897. 8°. 96 pp. 7 pl, 5. Irrigation I'raetice on the Great Plains, by Klias Branson i;oW!;ill. 1897. 8". 39 pp. 12 i>l. 6. Underground Waters of .SoiitJiwestern Kansas, by Erasmus Ha worth. 1897. 8"-^. 65 pp. 13pl, 7. Seepage Waters of the United States theru wtiB in oxiHteiiu no Biiitabb' tu]iogi'a|ihi('. nmp to servit ana, baHu Cor the geologic map. Tho preparation of hucIi a topognipliic. map was thi-rcforc ininiediatcly tn'gini. About one-tilth of the area of the country, exohiding Alivska, has now been thus mapped. The map is nuli'.isheh in atlas sheets, ea<:h sheet re|>res,'nting a small (|uadniiigular c' U-.vt, as oxplniued iiniler the following head- ing. The separate slieifs are H)l(l at.') ei^nts each whe ver than 100 copies are purchased, but when they are ordered in lots of 100 or more copies, whet'.. if tho sauie sheet or of ditfereiit shee:s, the price is 2 cents each. I'lie mappeil areas are widely scattered, nearly every State being represented. More than 800 sheets have been engraved aiul printed; they are tabulated by States in the Survey's "List of Publications,' a pamphlet which mav be had on application. The map sheets represent a great variety of topogrr-phic features, and with the aid of descriptive text they can be used to illuNirate topographic forms. This has led to the projectioD of an educational series of topographic folios, 'or use wuerever googriiphy is taught in high schools, academies, and colleges. Of this series the Hist folio has been issued, viz: 1. I'liysiojiraphie. types, by Henry (iaunett, 1898, folio, consisting of the following sheets and 4 pages of descriptive text: Fargo (N. Dak.-Minn ), 1 region in youth; Charleston (W.Va.),a region in maturity; Caldwell (Kans. i, a region iu old age; Palmyra (Va.), a rejuvenated region; Mount Shasta, (Cal.), a young volcanic mountain ; Eccle (Wis.), moraines; Sun Prairie (Wig. ), drumlins; Donald- son ville (La.;, river Hood plains; i; »o' pay (Me.), a lionl coast; Atlantic City (N. J.), a liarrier-beach coast. GEOLOGIC ATLAS OF THE UNITED STATES. The Geologic Atlas of the United States is the final form of publication of the topographic and geologic maps. The atlas is issued iu parts, progrossively as the surveys are exteinled, anuis designed ultimately to covsi the entire country. Under the plan adopted the entire area of the country is divided into small rectangular districts (designated (/iiadranf/'e*), bounded l)y certain lueridi.i.is and parallels. The unit of survey is also the unit of publication, and the maps and descriptions of each rectauguliir district are issued as a folio of the Geologic Atlas. Each folio contains topographic, geologic, economic, and structural maps, together with textual descriptions and explanations, and is designated by tho name of a principal town or of a prominent natural feature witliin the district. Two foruis of issue have been adojit.^d, a "library idition'' and a "field edition.'' in i)oth the sheets are bound between heavy paper i overs, but t'.ie library copies are permanently bound, while the sheets and covers of the tielil copies are only temporarily wired togi'ther. Under the law a copy of each folio is sent to cert;iin public libraries and educational institu- tions. The remainder are sold at 'iH cents each, except i iich as contain an nnusnal amount of matter, which are priced accordingly. Prepayment is obligatory The folios ready for (listribntion are listed below. No. I.iiiiitUi^ me'ridians. 1 I Livingston 2 j Kliigsold 3 ' PIftiwivillo 4 Kiiignton r> Sncrnnientn 6 ChultiiiiiiiigK 7 Pikes rr»K (oat oCrtl^n'k). 8«Mvpnei'. AuthracltdCrestcd liatte 10 12 Harpern Forry. JiHiksou Montana... /(ieurgla — ITennesHC*' . (^ilifurniii . TwiinesKcc . Califor^ilH.- Ti'nn* .WW . Colnradn . . . Toun«!iHet' . Colorado. .. ■ Virginia . I ' - .iMVoHl Virginia llMarvlniid EBtUlvllle . Fri'dericksburg. Staunton T.a8Ren I*cak 13 14 IS 16 h'nriville. Cidiibrnia. I Virginia Kentucky TenntMseo (Maryland (Virginia I Virginia iWost Virginia. Ciilifornui iTeniM'Sfice . ■i \Nortli Carolina . iioo-mo 85-'-85' 30' 12fl ' 30 -121° 84° SII'-SS^" 121'J-I2I'= 30' 8,'iO-85~ 30' IDS''- 100 30' 85° 30' 80° 10«" 46'- 107- 1.") 77 ' .10'-78o 120O 30'-121° 77°-77° 30' 70°-7»° 30' 1210-122° 83'J 50'-«4o Limiting parallels. Area, in 'Price, In cents. sqnare mllea. 460-46° 34° 30'-35<' 38° 30-30° 35' 30'-36° 38' ;iO'-30° 35° -3.";° 30' 88° 30' -30° S.'iO-SS^ 30' 38° 45'-39° 300-89° 30' 3«°-38o 30' 30° .30' -37° 3(>°-38° 30' 38" 38° 30' 4o 25 25 25 25 25 mtm AUVEKTISEMKNT. IX .«fo> 24 25 'JO ;f7 2U 31 3'J »;i M »5 M 37 30 40 4! 42 4;i Xiiiiie of Hlii'fit. MarvKvillt'.. Mmurtavilk- . HteveUfluii . OiBvcIimil — l-ik.viUi- .... Mt'Miniivill^ ^^fiiiini Tlu-e<< !• I^iiUllnn PSlio«l)iiim iLake I I'yruniiil Piaii l-Vaiikliii Wvomiiin Limiting nierldUnii. Llmltiiig iiarallulN. AruK, 1)1 Price, Hqiiare | lu miles, cents. iWest Virginia . . I Teimoasue jrVirisinia {Marvlanri lV/&it Virt'iiiia.. ll2 121° (W I" 01' 20" 57' 12P ■M)'-iiaf> l21°-121o 30' «jo 30'-8«o a4« 30'-«5° 85°-«6o 30' Ha" W-m> 7fl° 30'-77<' Ul°-Ui!o U^-il" 30' 810-81° 30' 830-83° 30' -W-W 30' •25"-l21o «!' 45" 35"-121t> 05' U4" 05"-121" 00' 25" 39° 13' 50' 39° 10' '22' 39° 13' 60' Brii'ovilli- — lliirkiiannon. ;)WliievTll« . Tnu'kri' Wardnir;; . . Sonnra Nlli'Ctm liidwoll Uur . Tazewell California I fVlrginia \\ ;\ West Virginia..!/ 'I'enntmiiee .... ■West Virginia Alabama I Coloratio I Calif' I'litt I (Jali .brr.ia Te'iueaseo — California — 'fe tas Ca.il'orniu iVirgiuia IWunt Virginia. 120 '-120'J 30' 790-70° I 840-84^ :iO' 800-80° 30' 86°-H8° 30' 104° 30-106" 120° 30'-121° 1200-120° 30' 84° 30'- 85° 1200- r20° 30' ioa°-ioo° 30' 121"-121° 30' 81° 30'-82° I 390-300 30' ' 3110-390 30' ;|40 30'-35o , 3.'>o-36o 30' I 350 30'-36o ;i5o 30'-3ao I 3«0-38o 30' 45°-46o 350 30'-36° • 370-370 30' ' 380-380 30' ■ I 300-30° oO' -39° 17' IB" '-390 13' 50" ■-39'J 17' 16" 38" 30' -390 0'26 U25 97S om 3,364 969 OSl 963 ; »2fi 11.65 12.09 11.05 932 932 25 2S 2S 25 25 ■25 26 60 ■26 2r 26 26 76 25 25 360-36° 30' 963 25 38° 30'-;t9o 932 ■26 31°-340 30' 980 25 38°-380 30' o:i8 50 39° 30'-40o 919 25 390 -SO" 30' 9'25 ■26 36°-3&° 30' 96:1 ■23 37° 30'-38o 844 ■io 28° 30'-r)0° 1,035 25 390 30' -40° 918 26 370-370 :«' 050 25 8TATI8TICA1. PAPERS. Mineral UoNoiin-.-.s :,( (li« Unitixl Slates [18HL'], b.y Albert Williams, jr. 1883. S^\ xvii, 813 pp. Prion at) 71pp. Price i50 cents. .Mineral Resources of the United States, 1891, by David T. 1 .ly. 1893. 8-. vii, B30 pp. Price 50 cents. Mineral Resonrres of the United States, 1892, by David T. Day. 1893. 8. vii, 850 pp. Price 50 cents. Mineral Resources of the I'nited States, 1893, by David T.Day. 1X94. 8-. viii, 810 pi>. I'riee 50 cents. On Man h 2, ISO.'i, the foUowin.; ;>i()yi lion was included in an act of Congress; "I'roriilfd, Thiit hereafter the report of the mineral resources of the 1,'nited States shall be issued as a part of the report of the Director of the Geological Survey." In coiui)liance witli tliis legislaliim the fi)llo\i-in!; reports have lieon jmblished: Mineral Resources of the I'nlted StaN's, 1891, David T. Day, Chief of Divisioi). 189,5. 8". xv, lill) pp.. 2,1 pi.; xix, 735 j.p., (i pi. Being i arts III and I\' of the Sixteenth Auniinl Report. Mineral Resonreea of the United States, 1895, Davii'. T. Day, Cbii^f of Division. 1896. 8\ xxiii, .'42 pp., 8 pi, and maps; iii, 543-1058 pp., 9-13 pi. Heing I'art III (in 2 vols.) of the Seventeenth Annual liciiort. Mineral Resources of the United States, 1806, David T. Day. Chief of Division. 1897. 8<^. xil, 642 pp., 1 pi. ; i(13-14(K)ii,i. Heing Part V (in 2 vols.) of the Eighteenth Annual Report. MMN XXXV 20 /I jt? 1 ■I ii m ' « iiin|MwiRifj ""^IPiwpJif PPB^P^«PP!P X ADVEBTISKMENT. Mineral Rcsotircos of tlio United States, 1837, David T. Day, Cliief of DiviHiou 1898 8° Being Part VI (in 2 vols.) of the Ninot«6ntli Annual ]{ei)ort. Tlio Hionoy recoivod from tlio Halo of the Survey imblieations is deposited in the Treasury, and tlie Secretary ot that Departmiiut do<',lineH to receive bank checl^s, drafts, or postage stani]>s ; all rem it- tances, thentfore, nnist lie l>y -ionisy obdkr, mad() payable to the Director of the United States (3eologi<^al Survey, or in curhkncy— the exact amount. Correspoudeneo relating to the publications of the Survey should be addressed to Thk Dirkctoh, Unitkd States Geological Survky, Washington, D. C, Ootober, 1898. ■ Wasuimoton, D. C. mmmmimmmmmm mHHHHii