ILLINOIS UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN PRODUCTION NOTE University of Illinois at Urbana-Champaign Library Brittle Books Project, 2015.COPYRIGHT NOTIFICATION In Public Domain. Published prior to 1923. This digital copy was made from the printed version held by the University of Illinois at Urbana-Champaign. It was made in compliance with copyright law. Prepared for the Brittle Books Project, Main Library, University of Illinois at Urbana-Champaign by Northern Micrographics Brookhaven Bindery La Crosse, Wisconsin 2015Contributions from the Botanical Department of the University of Nebraska. NEW SERIES, XVIII. Sixteenth Annual Report of the Botanist OF THE NEBRASKA STATE BOARD OF AGRICULTURE (A Preliminary Account of the Plants of Nebraska which are Reput d to be Poisonous, or Suspected of Being So.) By Charles E. Bessey, Ph.D. Extracted from the Annual Report of the Nebraska State Board of Agriculture, 1901. Distributed September 1, 1902. LINCOLN, NEBRASKA, U. S. A. BftmaREPORT OF THE BOTANIST.* PRELIMINARY ACCOUNT OF THE PLANTS OF NEBRASKA WHICH ARE REPUTED TO BE POISONOUS, OR ARE SUSPECTED OF BEING SO. BY CHARLES E. BESSEY, PH. D., BOTANIST TO THE BOAJtD. I. IMPORTANCE OF A KNOWLEDGE OF POISONOUS PLANTS. 1. When we remember that from one hundred to one hundred and fifty of the plants of Nebraska are known to be more or less poisonous, or are suspected of being1 so, it at once becomes evident that a fair knowledge of these plants is of considerable importance to the people of the state. This is especially true of those persons who are much in the fields and forests where they are likely to come in contact with harmful plants. Scarcely a year passes in which there are not ac- counts of the death of children and even of older persons from eating the roots, berries or other parts of some poisonous plants. To these cases we may add those, much less serious but still very annoying, to say the least, in which the poison affects the skin only, producing inflammation, vesication and eventually desquamation, as is so well shown in case of Poison Ivy poisoning. Strange as it may seem there are many persons who are very sensitive to the poison of Poison Ivy and other similar plants and yet who are not able to distinguish the harmful from the harmless species. Many specimens have been re- ferred to me for identification as poisonous to the touch which turned out to be quite harmless. On the other hand I have known of cases where the Poison Ivy was planted for ornament about the house with no suspicion of its true nature. 2. Again there is a widespread opinion that annually the stockmen lose many animals on account of the eating' of poisonous plants. Scarcely a season passes without reports of such losses, especially in the western parts of the state. It is not possible to estimate the aggregate amount of such losses, but it certainly is large enough to warrant more attention than has hitherto been given to the subject. Anything* which brings losses to so important an industry as that of the growing of stock is worthy of the most serious consideration, and * This is the Sixteenth Annual Report. (95) p4583096 NEBRASKA STATE BOARD OF AGRICULTURE. no pains should be spared to give aid to those who are suffering in this way. The importance of the stock interests is so great that whatever affects them, at once affects the state. When the animals on the farms and ranges are suffering the loss falls upon the state as well as upon the immediate owners. 3. It is on these accounts that this report has been prepared, and it is hoped that it may contribute to a better understanding of the plants of the state, and that through its suggestions may come a more careful study of the plants of the state, so that eventually it may be possible for any one to distinguish the harmful from the harm- less species. II. SOME LOWER PLANTS REPUTED TO BE HARMFUL. 4. I will not take time here to discuss the lower plants with any fulness, since to do so would require far more space than can be allotted to this report. I may merely refer briefly to a few, and to indicate their nature in the most general terms. 5. Bacteria are, as everybody now knows, very minute plants. These are so small that in many cases as many as three millions could lie side by side in a single layer on the top of an ordinary pin head. Yet in spite of their extreme smallness they are among the most harmful of plants, and it is now known that in many cases the harmful effect is due to a poison which they contain, apd which passes out into the tissues in which they are living. Thus in the case of those which produce diseases of animals it is rarely the direct action of the bac- teria which is particularly harmful, but on the contrary it is the poison which is secreted by them which kills or otherwise injures the tissues. In this way bacteria are to be regarded as truly poisonous plants, and it is proper that they should be included in this list. As a full discussion would be impossible at this time I will content myself with this reference, and the statement that bacteria gain access to the bodies of men and domestic animals by direct contact, and that if proper care be taken they may be kept out of the system. Some are taken in through filthy water, some gain access through the air which often carries them for some distance, while still more enter through a slight wound, as a scratch or prick in the skin. It is known that in some cases insects carry the bacteria, and that when these puncture the skin (as in the case of mosquitoes) some of the bacteria are ad- mitted to the wound. 6. Algae, which include the familiar 'pond scums' and so-called 'frog- spittles,' and many other water plants, are generally regarded with suspicion. It is a common remark that a pond is in a very bad condi- tion when it is 'all covered with a green scum.' Now it should be known that most of the green scum on ponds is quite harmless, and that a pond is none the worse on account of the fact that plants of this kind are growing in it. In fact it is pretty certain that in mostREPORT OF THE BOTANIST. 97 cases the green plants are good evidence'that the water is not foul, for it is well known to botanists that where the water is foul 'pond scums' will not thrive. Ponds are not the most desirable things to have near one's house, but if we must have ponds they are no worse for being green. There are, however, a few green water plants of the 'pond scum' kind that are thought to be harmful. I now refer to certain very small spherical plants known as 'Bur-balls' (Rivularia fluitans) which sometimes have been found in ponds in such numbers as to become a menace to the health of domestic animals. Some years ago in Minnesota many cattle suddenly died under circumstances which appeared to indicate that the cause was to be found in plants of this kind.* Shortly after drinking of the water containing these organisms the cattle suddenly died. Care was taken to eliminate other sources of injury, and the conclusion was reached that the algae were the cause of the trouble. 7. Fungi include so many plants which are poisonous that it is quite impossible to give them as much space here as they deserve. At an- other time it may be well to discuss them at length, but now I must be content to notice a few only. 8. One of the most common of the poisonous fungi is the Ergot, which occurs as a parasite on the heads of rye, wild rye, wild wheat grass, and many other species of grasses. It is a parasite which attacks the young kernels of the plant on which it is found, and at the last it develops into a blackish grain from half an inch to an inch long and an eighth of an inch thick. In some grasses it is smaller, but in the heads of rye it has the dimensions given. Many years ago I saw much ergot on Kentucky Blue Grass, and in this case the effect was disastrous, many animals being greatly injured by the poison. About twenty years ago a severe outbreak of ergotism occurred in Kansas, and on examination it was shown that the ergot was present in the heads of Wild Rye which had been made into hay, and on which the animals fed. The Wild Wheat Grass in eastern Nebraska is quite commonly affected with this fungus, but I have no records of any outbreak of ergotism on account of its occurrence on this grass. I find that the ergot drops out of the chaff very easily, and suspect that before the hay is fed, most of the ergot has fallen off, and. perhaps in this way the cattle are spared. The effect of the ergot poison on young cattle is to produce gangrenous sores, often of such virulence as to result in the loss of the hoofs or even the lower leg. The effect on pregnant females is well known, and doubt- less many of the cases of abortion where the cause has appeared to be mysterious could have been traced to the presence of ergot in the pasturage or hay. 9. A word should perhaps be said here in regard to Corn Smut, a * Sonic Algae of Minnesota Supposed to be Poisonous, by J. C. Arthur, in Bulletin of the Minnesota Academy of Natural Sciences, Volume XI. (1883.) 798 NEBRASKA STATE BOARD OF AGRICULTURE. fungus which is very common in most fields of corn, and which has been supposed by many veterinarians to be of the nature of ergot. In fact it is not at all uncommon to find that the Smut is spoken of as closely related to the ergot, and as having the same properties. Some years ago Professor Henry of the University of Wisconsin made a careful experiment with this smut, feeding it to a couple of cows for a considerable period of time with no toxic results. He came to the conclusion that if there was any poison in the smut of the general nature ©f that in the ergot, or any other poison in fact, it must be present in very small quantity, so small as to be of no account. 10. I can not take up the poisonous toadstools which are common everywhere. I refer to the umbrella-shaped plants of various colors, from white to yellow, brown and black, which grow on manure heaps, in the woods, or on the open ground. They vary in size from an inch or less to six or more inches in height and width. Some of these plants are not poisonous, and yield wholesome food for our tables, but others which are scarcely to be distinguished from these are virulently poisonous. The common Mushroom sold by the grocers is an ex- ample of a useful food plant in the midst of this group of poisonous plants. I can not too forcibly insist upon the danger of collecting and eating the wild toadstools to be found in every locality. Too many of them are poisonous for any one to risk eating them. Better omit eating some which are not poisonous than to incur the risk of illness and perhaps death by trying to distinguish the good from the bad. III. SOME HIGHER PLANTS REPUTED TO BE HARMFUL. 11. Joint-rushes (Equisetum of several species) have been suspected of possessing poisonous properties. One of the most common species (Equisetum arvense) is a leafless, much branched plant, from eight to twelve inches high, and of a bright green color, often found growing along roadsides and railroad tracks. It may be recognized at once by the fact that the stems are so loosely jointed that they may be pulled apart very easily, whence one of the common names. They have been called 'Horsetails' also, probably on account of the bushy ap- pearance of some of the species. All of the species have a great amount of silica in their stems, and this is so pronounced that some were, and probably are yet used for the purpose of scouring cutlery and other metal utensils. On this account these species are still known in some places as 'scouring rushes,' although they are now rarely if ever used for this purpose. In Europe a related species (Equisetum palustre) is said to be fatal to horses 'when hay contam- inated with it is fed to them in considerable quantity.'* We learn also that 'a case of the poisoning of horses by eating the field horse- * Stock-poisoning Plants of Montana, by V. K. Chesnut and E. V. Wilcox, in Bulletin 26 of the Division of Botany of th« United States Department of Agriculture. (1901.)report of the botanist. 99 tail (Equisetum arvense) was reported to the United States Department of Agriculture from Connecticut in 1871, and one of horses and sheep from Vermont in 1899, and also in 1900.'* It is evident from the fore- going- that we must include these plants in our list, although it may be regarded as probable that the harmful action is due not td its containing poison, but to 'its harsh, scouring action in the month and intestinal tract.' Jonesf confirms the poisonousness of the Joint-rushes for horses in Vermont, The species which he experimented with is Equisetum arvense, which is very common throughout Nebraska. Stock- men should therefore be on their guard in feeding 'wild hay' in which these plants are often found. 12. Brakes (Pteridium aquilinum) have been reported as poisonous to horses and cattle in this country and England.! These are large coarse ferns growing in woodlands and the land recently cleared of trees. It has not been recorded as occurring in Nebraska, but as it is found in Iowa, and also in the Black Hills, it is quite likely that it may yet be found to be a native of this state also. 13. Red Cedar (Juniperus virginiana) is described as 'poisonous' in works on Medical Botany, and IialstedS says it 'may poison goats which feed upon it,' and that it is 'irritating to the skin and may even produce blisters.' IV. THE FAMILIES AND SPECIES OF FLOWERING PLANTS REPUTED TO BE POISONOUS. The !Lily Family (Liliaceae). 14. While the plants of this family are remarkable for their beauty it is well known that many of the species contain a dangerous poison, as in Meadow Saffron (Colchicum autumnale), American Hellebore (Veratrum viride), Lily of the Valley (Gonvattaria majalis), the bulbs of Crown Imperial (FritiUaria imperials), and Tulip (Tulipa gesneHana), etc. A few species have been noted for their poisonousness to stock. 15. Death Camas (Zygadenus venenosus) is a native of the northwest, and probably enters our territory at its extreme northwestern limit. Other species of this genus (Z. elegans and Z. nuttallii) also, are found in considerable quantities, but we know little as to their physiological effect when taken into the alimentary canal. The plants are from a few inches to a couple of feet high, and have a single unbranched stem, which bears five or six long, narrow leaves. At the top of the stem is an elongated cluster of small greenish flowers. The plant ♦Stock-poisoning Plants of Montana, by V. K, Chestnut and E. V. Wilcox, in Bulletin 28 of the Division of Botany of the United States Department of Agriculture. (1901.) t Are our native Horsetails or Ferns Poisonous? by L. R. Jones, in Proceedings of the twenty-second Annual Meeting of the Society for the Promotion of Agricultural Science, h.eld at Denver, Colorado, 1901. t Stock-poisoning Hants of Montana, by V. K. Chesnut and E. V. Wilcox, hi Bulletin 26 of the Division of Botany of the United States Department of Agriculture. (1901.) §The Poisonous Plants of New Jersey, in Bulletin 185 of the N. J. Agricultural Ex- periment Station. (1899.)100 NEBRASKA STATE BOARD OP AGRICULTURE. grows from a small bulb, and this is the part which is the most actively poisonous. The first species named above has been very thoroughly studied by Chesnut and Wilcox* who proved by experi- ments that both leaves and bulbs are poisonous to stock. There is need of similar work on the other species which occur in this state. 16. According to Halstedt certain species of Birthwort (of the genus Trillium) are poisonous, but I have no evidence as to the extent of the injury which follows the eating of their roots and other under- ground parte. As we have but one species (Trillium nivale), sometimes called the Early Wake-Robin, and this quite restricted as to its occur- rence in the state, we need have little fear in regard to it. This species is very abundant in the valley of the Weeping Water Creek, and in a few other ptkces in the extreme eastern counties. 17. The Sand JAly (beueocrinum mortianum) has been accused of con- taining a poisonous principle, but Chesnut and Wilcox doubt the just- ness of this accusation. It does not appear probable to me that this low plant with its very deep-lying bulb, pure white, fragrant flowers, and scanty leaves is a poison-bearer. The Calla-Lily Family (Araceae). 18. This family, which contains some useful plants, as the Calamus (Aoorus calamus), is in general characterized by the presence of an acrid poison. Fortunately the acridity is so marked that few persons or animals are ever tempted to eat of the plants in sufficient quantity to do much harm. Among the native species of this family is the so- called Indian Turnip (Arisaema triphyllum), called also the 'Jack-in-the- Pulpit.' The latter name is given on account of the peculiar flower cluster which consists of a thick spike surrounded below, and covered above, with a hood-shaped cover. The plant grows sparingly in moist places in the eastern part of the state, and attains a height of about a foot. It grows from a fleshy corm about an inch in diameter, and of an intensely acrid nature. The Grass Family (Qramineae). 19. In all the very large family of the Qrasses, numbering 3,500 or more species, there are but two that I know to be poisonous, namely the Bearded Darnel (Lolium temulentum), and another related species (L. linicola). It is true that some studies recently made by Dr. Peters seem to show that under certain conditions the common Sorghum may develop a poison, but this is quite certainly a pathological product in a plant which is ordinarily wholesome. This family includes not only the species used for hay and pasturage, but also the grains of various kinds, as wheat, rye, oats, barley, maize, sorghum, broom-corn, etc. * Stock-poisoning Plants of Montana, by V. K. Chesnut and E. V. Wilcox, in Bulletin 26 of the Division of Botany of the United States Department of Agriculture. (1901.) f The Poisonous Plants of New Jersey, in Bulletin 136 of the N. J. Agricultural Ex- periment Station. (1899.)REPOBT OF THE BOTANIST. 101 It must be remembered also that clovers, alfalfa, etc. are not here included, although they are often spoken of as grasses. The true grasses are plants with narrow leaves, which are sheathing below, and which grow on stems which have enlarged 'joints,' and very commonly are hollow. Maize and sorghum are notable exceptions to the general rule that the stems are hollow. 20. There are from 140 to 160 species of grasses in Nebraska, and unless the Bearded Darnel, referred to above, has reached the state in its spreading westward, none of these are poisonous in their normal condition. The Darnel is an Old World plant which has come to America as a weed, and it has been moving westward for many years, until it is now reported from Kansas; so that we are quite certain to have it among our weedy grasses in the near future. Its seeds are the poisonous part of the plant, the foliage being harmless. The grass looks much like another weedy species, also from the Old World, viz., the Quack Grass (Agropyrum repens), but may be distinguished by the fact that the spikelets (flower clusters) in the heads are placed edgewise in Darnel instead of flatwise on the stem as in Quack Grass. It will be well for farmers and others to be on the lookout for this foreign intruder. The Ibis Family (Iridaeeae). 21. The plants which are most notable in this family are often called 'Blue Flags,' but I much prefer the pretty name of Iris. They have narrow leaves, and these sometimes are so narrow as to resemble the leaves of the grasses; in fact one of the common species in Nebraska bears the name of 'Blue-eyed Grass* (8isyrinchium campestre), and is often thought to be a real grass by those Nvho are not versed in plant lore. The plants of this family are acrid, and some are used in medicine. 22. Wild Iris (Iris versicolor) which is common in many parts of Ne- braska, growing in swales and draws, Is said to be poisonous by Halsted.* 23. I have had the Blue-eyed Grass (Sisyrinchium campestre) accused of being poisonous to the touch, but I am confident that this is an error. The Orchid Family (OrcfMaceae). 24. The Orchids are among the most interesting of the plants which grow anywhere. Their flowers are of wonderful complexity, and many possess great beauty in addition to their interesting structure. They are mostly tropical, and there many live attached to the trunks and branches of trees, their strange flowers hanging down from slender flowerstalks. In Nebraska there are a few species, but all of ours live on the ground. •The Poisonous Plants of New Jersey, in Bulletin 135 of the N. J. Agricultural Ex- perimental Station. (1890.)102 NEBRASKA STATE BOARD OF AGRICULTURE. 25. The Ladies' Slippers (Cypri- pedium hirsutum and 0. candi- dum), are among the best known of our orchids. They are leafy plants a foot or less in height bearing a single slipper-shaped flower at the tbp of the stem. In the first specie© the flower is yellow, while in the second it is white. Other species are found in the states eastward, and among them is one of great beauty, viz., the * Showy Ladies' Slipper* (C. regime). I am not aware that this species has been found in Nebraska, but as it oc- curs in Iowa, I may well speak of it. Some years ago it was found out that this magnificent plant is quite poisonous to the touch for many persons. Cases of severe poisoning have been reported in the scientific jour- nals, and it is now considered as well established that the plants are really poisonous. It is now held also that the yellow species (Fig. l)# mentioned above is Fig. 1.—Yellow Ladies' Slipper (Cypripedium , ^ , hirmtum), one-third natural size. (From P^sonous, and this makes it Chesnut, u. S. Department Agriculture.) likely that the other species is to be included a a well. Although I am quite susceptible to contact poisons I have never experienced any unpleasant effects from handling any of the Ladies' Slippers. The Buttercup Family (Ranunculaceae). 26. Buttercups are among the prettiest of the simple spring flowers, and many are accordingly found in cultivation in gardens. The plants are mostly herbaceous, and the flowers are characterized by having all of their organs quite separate from one another, there being none of that growing together of parts which is so noticeable in most other kinds of flowers. The species are mostly pervaded with an acrid- poisonous principle, which is so pronounced in some species as to be virulently harmful. 27. Some of the species of buttercups proper (Ranunculus) are very *Note—All o the illustrations in this report are from the bulletins prepared by V. K. Chesnut and issued by the Division of Botany of the United States Department of Agriculture.REPORT OP THE BOTANIST. 103 acrid, as for example Ranunculus sceleratus, a common weedy plant of low grounds. Its juice when applied to the skin produces blisters and angry sores. Even the larger flowered species, as R. repens, is more or less poisonous to the touch. The Anemonies (Anemone of several species) are known to be more or less poisonous to the touch, or when taken in- ternally. This applies also to the species of the closely related genus Pulsatilla, which contains the Pasque-flowers. Here too should be noticed the Baneberries (Actaea rubra), whose red berries and white underground stems contain an active emetic poison when eaten by children.* 28. The Larkspurs (Delphinium) are however the most serious pests among the poisonous plants of this family, since they are greedily eaten by stock in the early spring with fatal re- sults. The plants when they ap- pear in the spring consist of dark-green tufts of leaves which are closely packed together. At first they are quite low, but as they grow rapidly they soon attain a height of six to eight or more inches and are then very conspicuous plants on the prairies. It is at this time that they are the most dangerous to stock, since their conspicuous- ness attracts the hungry animals in their search for food. In western Nebraska there have been serious losses reported to me from stock eating the leaves of Nelson's Larkspur (Delphinium nelsoni). An outbreak of a serious nature near Kimball, came to my notice a few years ago, in which many cattle were reported to have perished. In this species the plant is from eight to sixteen inches high, the leaves are divided into narrow segments, and the flowers are blue. Of course the flowers, which appear in May and June, are not to be seen when the cattle are suffering from eating the larkspurs, as It is found that *The Poisonous Plants of the Vicinity of New York City, by Professor H. H. Rusby. (1895.) Fig 2.—Larkspur (Delphinium trieorne)y one- third natural size. (From Chesnut, U. S. Department Agriculture.)104 NEBRASKA STATE BOARD OF AGRICULTURE. animals are in the habit of eating the leaves only during the early spring when the forage is scanty. In the states farther west there are several other species which have been very harmful. Thus Chesnut and Wilcox* describes Delphinium glaucum and D. bicolor, which they find to be fatally poisofious to stock in Montana. Other species of larkspur have been found to be poisonous, as D. tricorne (Fig. 2), a common eastern species, which has been fatal to cattle in Ohio.t In eastern Nebraska the common wild larkspur is D. albescens, and it bears whitish flowers on a tall stem (often three feet high). It is very common, and yet I have had no accounts of any harm coming to cattle from eating it; in fact I do not know whether cattle ever eat it. That it is poisonous is very likely. The Barberry Family (Berberidaceae). 29. In this family we find the curious herb known by the names of May-apple, Mandrake, Yellow-berry, and Indian Apple (Podophyllum peltatum) and which consists of a stout stalk as thick as a lead pencil and about a foot high, bearing two broad horizontal leaves on its summit. In the fork of the stem close to the leaves is a creamy-white flower two inches in diameter, and when this falls it is followed by a soft, yellow berry nearly an inch in diameter. Under the ground the plant develops long, stout, running stems, which have been used in medicine. These underground stems (roots they are commonly called) are poisonous, and care should be taken that children do not eat them. The berry is harmless when ripe. The Poppy Family (Papaveraceae). 30. The type of this famity is the Poppy, which contains a milky juice in which is found more or less of opium, a well-known medicine, but at the same time a poison, also. We have a species of Wild Poppy (Argemone intermedia) which grows throughout the greater part of the state, and while it doubtless contains the poisonous principle, I have had no accounts of its harmfulness. It is likely that its numerous prickles serve the good purpose of keeping children and domestic animals from meddling with it. 31. Halstedt says that 'the juice of the Bloodroot (Sanguinaria can- adensis) will poison some who touch it.' This plant occurs only along the Missouri River, in the eastern counties. It sends up a single leaf in the spring, and within this as it unrolls is a very pretty white flower, an inch or so in diameter. The plant gets its name from the color of its juice, which is like that of blood. * Stock-poisoning Plants of Montana, by V. K. Chesnut and E. Y. Wilcox, in Bulletin 26, Division of Botany, United States Department of Agriculture. (1901.) t Principal Poisonous Plants of the United States, by Y. K. Chesnut, Bulletin 20, Division of Botany, United States Department of Agriculture. (1898.) tThe Poisonous Plants of New Jersey, by B. D. Halsted, in Bulletin 135 of N. J. Agricultural Experiment Station. (1899.)REPORT OF THE BOTANIST. 105 The Mustard Family (Cruciferae). 31a. In this family there is a pungent, irritating principle, but the plants are not usually regarded as poisonous, and yet Dr. Rusby* includes the common Horseradish (Roripa armoracia) in his list, saying of it 'while it would not gen- erally be regarded as a poisonous article, yet used in excess it may become so through its powerful irritation of the urinary organs. Johnson gives a case in which this result was extreme and seri- ous.' The Pink Family (Caryophyllaceae). 32. Here are some of the most attractive plants with which we are acquainted, as the Pinks, Carnations, Sweet Williams, etc., and yet with these are some which are poisonous and must therefore be avoided. For the most part they have pretty flowers and thus they are often tolerated when otherwise they would be at once eradicated. 33. Corn Cockle (Agrostemma githago) is an Old World plant which has come into this coun- try as a weed in wheat fields. It grows to be nearly as tall as the wheat, has narrow leaves which stand two opposite one another at each joint of the stem, and Fig. 3.—Corn Cockle (Agrostemma githago),- rnnlr one-third natural size, with seeds; at a, pretty pink flowers nearly an natural size, and at 6, four times the natural inch in diameter (Fig. 3). After size. (From Chesnut, U. S. Department blossoming the plants develop Agriculture.) many pods of black seeds. The latter are nearly an eighth of an inch in diameter, and are irregularly rounded in shape and somewhat roughened on the surface. A poisonous principle resides in the seeds which renders them harmful and even dangerous. As the seeds are often mingled with wheat there is constant danger that they may be ground with the grain, and thus enter into the flour in sufficient quantity to bring about harmful results. According to Chesnut the poisonous principle is 'saponin,' and when taken in sufficient quantity it produces 'intense irritation of the whole digestive tract, vomiting, headache, * The Poisonous Plants of the Vicinity of New York City, by H. H. Eusby. (1895.)100 NEBRASKA STATE BOARD OF AGRICULTURE. nausea, vertigo, diarrhoea, hot skin, sharp pains in the spine, difficult locomotion, and depressed breathing.' Evidently a weed which is capable of producing such disagreeable symptoms should be very care- fully eradicated from our wheat fields, especially since the bad effects are manifest also in "stock which have fed upon grain containing these baneful seeds. 34. Bouncing Bet (Saponaria officinalis), is one of the commonly grown ornamental plants in many gardens. Its pink flowers are rather pretty, and its green foliage is not unpleasant. Yet this is a poisonous plant, containing the same principle, saponin, as that which gives the Corn Cockle such a bad reputation. In some portions of the country this plant has run .wild, thus adding to the danger arising from its poison- ousness. Even in Nebraska I have seen some evidence that it is likely to escape and take to weedy habits. The Pokeweed Family (Phytolaccaceae.) 35. We have but one representative of this family of plants, namely the Pokeweed (Phytolacca decandra), a tall, branching herb, with a perennial root and annual stem. It is a smooth-leaved, strong-smelling Fig. 4.—Pokeweed (Phytolacca decandra), one-half natural size. (From Chesnut, U. S. Department Agriculture.) plant, and it bears white flowers which are followed by dark-purple fleshy berries (Fig. 4). The plant is a native of the United States, but probably not of Nebraska. It has however followed the husbandman as he has come upon the Plains, as have so many other weedy plants.REPORT OF THE BOTANIST. 107 It is now found in the southeastern part of the state, and doubtless will gradually pass westward along with other alien species. It bears the names Gajrget, Scoke and Poke in addition to Pokeweed, but the last is to be preferred. It has long been known to possess poisonous properties, but strange as it may appear the fresh shoots are used in some localities as a subtitute for asparagus as a table delicacy. Con- siderable care must be exercised in the preparation of the shoots for food, no part of the root being taken, and at the same time the water in which the shoots are first boiled must be rejected on account of the poison contained in it.* Certainly the use of Pokeweed shoots for food can not be commenced. The root is the most poisonous part, and cases are on record of fatal cases of poisoning from mistaking them for other fleshy roots. As indicated above the shoots are poisonous, and so are the berries (to a less degree), and the seeds. The Foub-o'clock Family (Nyctaginaceae). 36. In old-fashioned gardens there are still to be seen the pretty plants to which the name of 'Four-o'clock' (MiraMlis jalapa) has been given in allusion to the habit they have of opening their flowers about four o'clock in the afternoon. These cultivated plants are natives of the warmer portions of America, hence one name by which they are known,—'Marvel of Peru.' They contain a purgative and emetic prin- ciple, and doubtless this indicates a poisonous action. The leaves are said to be capable of producing severe inflammation.! 37. We have several species of related ^genera growing wild in Ne- braska. The most common of these is the Wild Four-o'clock (Allionia nyctaginea), a smooth, large-jointed plant which grows rampantly in rich soil and is regarded as a troublesome weed in some places. Its flowers are of a pretty pink color, and are about half an inch in diameter. They open in the afternoon, usually not far from four o'clock, and therefore the name by which they are known is quite proper. Some suspicion has been lodged against these plants, and I therefore include them in this list, although I am not able at the present time to determine whether they are actually poisonous or not.t The Buckwheat Family (Polygonaceae.) 38. This family is included here with considerable doubt. The plants * Thirty Poisonous Plants of the United States, by V. K. Chesnut, in Farmers' Bul- letin 86 of the U. S. Department of Agriculture. (1898.) f The Medicinal Plants of the Philippines, by T. H. P. de Tavera, translated by J. B.Thomas (1901.) J Note—Since the foregoing was written Mr. Chesnut has supplied me with further information in regard to the plants of this family. Pisonia erecta of Brazil is 'an ener- getic irritant, the slightest contact with which causes serious inflammation.' The stems of a Mexican Four-o'clock (Mirabilis dichotoma) are drastic, and the roots of species of Boerhavia are emetic and laxative. Allionia incarnata is used in Mexico as a remedy for diarrhoea, and it is said that the Arizona Indians make a decoction of A. nyctaginea with which they wash their babies in order to make them sleep in the daytime. The foregoing may suggest the necessity of a careful investigation of the properties of these plants.108 NEBRASKA STATE BOARD OF AGRICULTURE. contain for the most part an astringent principle, which has been made use of in medicine. The Docks (Rumex, of several species) are well known examples of this family, and these are freely used for food (in 'greens') and medicines (from their roots). The Water-peppers and Heartseases (Polygonum, of many species) contain tannin in such quantities that one of the species (P. emersum) has been used in the process of tanning. 39. The Eriogonums (Eriogonum, of several species) are often more or less woolly plants with some general resemblance to the Heartseases, although some of the species are low with a few flowering stems spring- ing from a woody root and a cluster of root-leaves. Our species grow in the central and far western portions of' the state. In Montana they have been suspected of being poisonous to stock, but I am not aware that this has been confirmed by trial. Specimens have been sent to the Department of Botany from the northwestern part of the state with the suggestion that they were poisonous. Clearly they need investiga- tion. According to Halsted seeds of Sorrel (Rumex acetosella) are said to poison horses and sheep.* The Quassia Family (Simarubaceae). 40. The members of this tropical family of trees and shrubs are pervaded with a bitter principle which is so marvellously intensified in the Quassia tree (Picraena excelsa) of Jarnica, that its wood is used in medicine. However it is said to be poisonous to insects. We have no native representatives of this family in Nebraska, but one member, the Ailanthus tree (Ailanthus glandulosa) of China, is commonly grown for its ornamental foliage. Dr. Rusby points outt that the roots, bark and leaves are very poisonous, and cites cases of persons who have suffered from drinking water in which the roots penetrated. The Nettle Family (Urticaceae). 41. The plants of this family are well known on account of their stinging hairs which are found abundantly scattered over the surfaces of leaves and stems. Each hair is hollow, and the cavity is filled with an acrid fluid which produces a burning sensation with severe local inflammation, when applied to the skin. Our plants are species of two genera (Urtica and Urticastrum). To the first belong the Great Nettle (Urtica dioica), an Old World weed which has entered the eastern edge of the state, and the Slender Nettle (TJrtica gracilis), a native plant which is widely distributed in the state. The first is very virulent, while the second is considerably less so. To the second genus belongs the Wood Nettle (Urticastrum divaricatum) another virulent plant, second only to the Great Nettle. These plants deserve to be included in the list of external poisons. *The Poisonous Plants of New Jersey, by B. D. Halsted, in Bulletin 135, N. J. Agri- cultural Experiment Station. (1899.) tThe Poisonous Plants of the Vicinity of New York City, by H. H. Rusby. (1895.)REPORT OF THE BOTANIST. 109 The Mulberry Family (Moraceae). 42. According* to Halsted some persons are poisoned by the Osage Orange (Toxylon pomiferum), the well-known shrub used so much in Nebraska for hedges. He says* "a friend informs me that in working* in Osage Orange hedges he has suffered considerably, and when the thorn pierces the skin it leaves a poisoned wound." 43. The other native species in this family, namely the Mulberry (Moms rubra) and the Hop (Hamulus lupulus) in an allied family are as far as I know entirely free from any poisonous properties. The Spurge Family (Euphorbiaceae). 44. In this family the plants possess a white, milky juice in which there is generally more or less of poison. In some of the tropical species this poison is so pronounced as to be fatal even in small doses. Our species are mostly low annuals with opposite leaves, and incon- spicuous flowers, followed by small three-seeded pods, which burst open at maturity and ex- pel the seeds. They must not be confused with the genuine Milk- weeds which will be taken up later. 45. The largest native species is the Snow-on-the-Mountain (Eu- phorMa marginata) a pretty weed of the Plains, which has been brought extensively into cultiva- tion in flower gardens in this country and Europe. It attains a height of three to four feet, and has bright-green, opposite leaves on its erect stem. The upper leaves are beautifully margined with white, and these give to the plant its ornamental value, since the flowers them- selves are inconspicuous (Fig. 5). The honey of the flowers is said to be poisonous, producing vomiting and purging. Honey so contaminated 'is hot and dis- Fig. 5.—Snow-on-the-Mountain{Euphorbia , , , marginata), one-third natural size, with agreeable to„ the taste. The seed pod at side natural size. (From milky juice, which is very abun- Chesnut, U. S. Department Agriculture.) *The Poisonous Plants of New Jersey, by B. D. Halsted, in Bulletin 135, N. J. Agri- cultural Experiment Station. (1899.)110 NEBRASKA STATE BOARD OP AGRICULTURE. dant, is irritating* to the skin, often causing blistering*, and it is said that the stockmen in Texas make use of the juice in branding* their cattle, regarding it as 'superior to a red-hot iron for this purpose, because the scar heals more 'satisfactorily.'* Other species are de- scribed by Halstedt as poisonous to the touch for many persons. Among those which are natives of Nebraska are the Flowering Spurge (Euphorbia eorollata), two to three feet high, and a number of prostrate species (E. serpyllifolia, E. maculata, E. glyptosperma, etc.), all of which should be avoided by persons who are susceptible to this poison. 46. The Crotons are hairy plants of this family, represented in our liora by the Texan Croton (Croton texensis), a white-hairy, slender- stemmed plant with narrow leaves and a spreading head of flowers at the summit. As the genus is known to include virulently poisonous species it is probable that this one also possesses a toxic principle. It should be avoided. 47. The Castor-oil Plant (Ricinus communis), a native of the Old World, now much grown in this country for its oily seeds as well as for orna- ment, is actively poisonous. The seeds are prettily marked and are attractive to children, and many cases are on record of the death of children who have eaten them. Some years ago my attention was called to the fact that a number of horses were killed by eating the seeds which were mixed with corn which had been brought to Lincoln from some place in Missouri where the Castor-oil Plant is grown for its oil. The Morning Glory Family (Convolvulaceae). 48. This family of pretty plants, mostly climbers, seems not to merit the suspicion of being poisonous which it is necessary to cast upon it. The common Morning Glory of the gardens (Ipomoea purpurea) is a good example of the family. I do not know of any complaint as to its being poisonous, but a near relative, the Man-of-the-Earth (Ipomoea pandurata) is included in Halsted's list of plants 'with somewhat poison- ous underground parts.'? I have some reasons for suspecting that the Big-rooted Morning Glory of~the Plains (Ipomoea leptophylla) is some- what poisonous, but have not yet demonstrated it. 49. One of the troublesome weeds of the cornfields in eastern Ne- braska is the Wild Morning Glory (Convolvulus septum) which bears large white or slightly pinkish flowers, of the shape of those of the common Morning Glory. Every farmer knows about the long, white, underground stems which are so abundant in a patch of these weeds. Halsted has shown§ that these troublesome stems have an additional bad quality, since they are 'quite poisonous to swine.' * Principal Poisonous Plants of the United States, by V. K. Chesnut, in Bulletin 20 of the Division of Botany of the U. S. Department of Agriculture. (1898.) fThe Poisonous Plants of New Jersey, by B. D. Halsted. in Bulletin 135 of the N. J. Agricultural Experiment Station. (1899.) J Ibid. >1 Ibid.REPORT OF THE BOTANIST. Ill The Nightshade Family (Solamceae). 50. Here we find some of the most useful food-plants, as the Potato (Solatium esculentum), Tomato (Lycopersicum lycopersicum), and Egg-plant {Solarium melongena), along with dangerous poisons, as the Deadly Night- shade (Solarium dulcamara), Belladonna (Atropa belladonna) and Henbane (Hyoscyamus niger). Certainly a family with such contrasts is a most interesting one. It is neces- sary in dealing with the species of these plants that we know quite certainly what ones we have in h' nd, or disastrous results may follow. 51. The Black Nightshade (Solanum nigrum) is one of the most common of our native weedy plants. It grows in yards and waste places, attaining a height of a foot or more, and branches so profusely that it spreads over a good deal of ground by the end of the year. It is an annual and so dies down at the end of the summer. Its flowers are white or bluish, and about one third of an inch in diameter (Fig. 6). The berries are black and about one third of an inch in diam- eter. According to Chesnut* the plants are poisonous in all their parts, and the poison is an alkaloid- like substance named 'solanine.' It is not destroyed by boiling, and is not constant in amount in the plant. On account of this incon- „ , XT. i ^ i i /« t . . Fig. 6.—Black Nightshade {Solatium ni- stancy m the amount of solanine grum), one-third natural size. (From in different parts of the plant we Chesnut, U.S. Department Agriculture.) have conflicting reports in regard to the proper place of the plant. By some the Black Nightshade is considered to be harmless, and the berries are eaten in pies and other pastry, while by others the plant is looked upon as one to be shunned at all times, as poisonous. The fact is that poisoning does occur from eating the berries, and while cattle seldom eat the foliage, 'cases of poisoning are recorded for calves, sheep, goats, and swine.' In Nebraska while the people in some places eat the berries, in other places the whole plant is looked upon as poisonous. * Principal Poisonous Plants of the United States, by V. K. Chesnut, in Bulletin 20, Division of Botany, U. S. Department of Agriculture. (1898.)112 NEBRASKA STATE BOARD OF AGRICULTURE. 52. The Spreading Nightshade {Solanum triflorum) is consider- ably like the preceding*, but it is much more spreading, with little ability to stand upright. It differs also in its leaves which are much lobed, instead of being* nearly or quite entire as in the Black Nightshade. The flowers are much like those of the Black Nightshade, but the berries are somewhat larger, and are some- what flattened (Fig. 7). In some parts of the state the people use the berries for food, as in pies, pastry, etc., apparently with no bad effects. Whether the im- munity enjoyed by the eaters of these berries is due to mere 'good luck' can not be decided at the present time, but 1 greatly fear that fatal cases may appear if such eating becomes common. Chesnut reports that 'complaints of the poisoning of cattle have been sent in to the Department from Nebraska, and experiments on guinea pigs show that berries sent in from that state are poisonous.'* 53. It should not be forgotten that the foliage and green fruits ('potato balls') of the potato (Solatium tuberosum) are poisonous, and that this is especially true of the tubers which turn green by exposure to the sun. In Montana pigs died from eating uncooked sprouted potato tubers, but when cooked the same lot of tubers were fed with no harmful results.! 54. Doubtless the other species of Solanum in the state are more or less poisonous, but both the Buffalo-bur {Solanum rostratum) and the Horse Nettle {Solanum earolinense) are so fully armed with sharp prickles that animals are kept from eating them. 55. The Jimson Weed {Datura stramonium) is a well-known, large, coarse, strong-smelling plant which grows abundantly in hog lots, and waste places. Its flowers are large, white, and funnel-shaped, and * Principal Poisonous Plants of the United States, by V. K. Chesnut. in Bulletin 20, Division of Botany, U. S. Department of Agriculture. (1898.) | The Stock-poisoning Plants of Montana, by V. K. Chesnut and E. V. Wilcox, in Bul- letin 26, Division of Botany, U. S. Department of Agriculture. (1901.) Fig. 7.—Spreading Nightshade (Solanum triflorum), one-third natural size. (From Chesnut, U. S. Department Agriculture.)REPORT OF THE BOTANIST. ll3 these are followed by large prickly fruits, an inch or more in diameter (Fig. 8). The seeds, which are numerous, are black, and about an eighth of an inch in diameter, with a rough sur- face. The plant, which is a native of the Old World, is quite poisonous, the active principles 'atropine' and 'hyos- cyamine' being present in all parts,—stem, leaves and seeds. Many cases are on record of human beings having been poisoned by some parts of these plants, and children especially have suffered, as they often eat the seeds. Domestic animals' generally avoid eating the leaves or other parts, yet a few cases of poisoning are on record. The Dogbane Family {Apocynaceaei. 56. The common name of this family indicates the belief in the poisonousness of the species. We have two species, Fig.8.— Jimson Wee&{ Datura stramonium), with i 0 r\ -U seed-pod at side, one-third natural size. (From namely, bpreadmg Dogbane chesnut, U. S. Department Agriculture.) {Apoeynum androsaemifolium) and Indian Hemp (Apoeynum cannabinum), both perennial herbs 2 to 4 feet high, with spreading branches, opposite leaves, and small whitish or pink flowers in terminal, flattish clusters. The first has ovate or oval leaves, while in the second they are oblong or lanceolate- oblong. In the first the flower petals are spread out or even recurved, while in the other they are nearly or quite erect. Both species are rather common throughout the state on the prairies and in old fields. They are supplied with a milky juice, and are known to be poisonous.* On account of the toughness of their stems they are not inviting to cattle, and this may be the reason why we have no cases of poisoning reported. Halsted includes the second species in his list of plants 'with somewhat poisonous underground parts.'t *The Stock-poisoning Plants of Montana, by V. K. Chesnut and E. V. Wilcox, in Bulletin 26, Division of Botany, U. S. Department of Agriculture. (1901.) fThe Poisonous Plants of New Jersey, by D. B. Halsted, in Bulletin 135, N. J. Agri- cultural Experiment Station. (1899.) 8114 NEBRASKA- STATE BOARD OF AGRICULTURE. The Milkweed Family (Asclepiadaceae). 57. Here are the plants to which the name 'Milkweed' is properly ap- plied, although as already seen there are many other plants which have a milky juice. These plants have opposite leaves, and showy flowers of curious structure which produce large pods filled with silk- plumed seeds. Many of them have long succulent underground stems by which they are able to pass the winter in safety, and on this account they are often weeds most difficult to eradicate. The milky juice, which is generally very abundant, has been reported to me as an irritant poison to some people. We have more than a dozen species, most of them members of the genus Asclepias. One of the most common is the Showy Milkweed (Asclepias speciosa), a large hairy plant with showy, pinkish flowers in a dense terminal cluster. In Montana it has been under suspicion, and some experiments made in that state show that there is some ground for the ill repute in which it is held. In California a related species (A. eriocarpa) 'is especially dreaded by sheep men.'* Our Nebraska species need careful investigation. The Figwort Family (Scrophulariaceae). 58. The plants of this family are distinguished by their flowers which have a gamopetalous two-lipped corolla, and a seed-pod containing many seeds. A poisonous principle is present in the family, and it is sufficiently strong in some cases to prove harmful, or even fatal. In the wrestern part of the state there grows a low plant, the Red Syn- thyris (SyntJiyris rubra), with a purplish spike of flowers, which is fol- lowed by a much taller spike of seed-pods. In Montana this has been accused of being poisonous to stock,f but it must be confessed that the experiments do not prove the accusation. Some of the tests seem to, indicate that some harm may follow the eating of the leaves. No reports of poisoning by this plant have been received from Nebraska. 59. Halstedt includes the Culver's-Root (Leptandra virgimca) among the plants 'with somewhat poisonous underground parts.' As this plant grows rather commonly in Nebraska it will be well to be on our guard in dealing with it. The Plum Family (Drupaceae). 60. It has been known for a long time that a, deadly poison is de- veloped in the foliage of certain species of the Plum Family, and it is now definitely known that death has resulted from the eating of the foliage. In a recent bulletin Chesnut§ discusses this matter so fully that I can do no better than to quote directly from him. The most *The Stock-poisoning Plants of Montana, by Y. K. Chesnut and E. V. Wilcox, in Bulletin 26, Division of Botany, U. S. Department of Agriculture. (1901.) t Ibid. J The Poisonous Plants of New Jersey, by D. B. Halsted, in Bulletin 135, of the N. J. Agricultural Experiment Station. (1899.) \ Principal Poisonous Plants of the United States, by V. K. Chesnut, in Bulletin 20, Division of Botany, U. S. Department of Agriculture. (1898.)REPORT OF THE BOTANIST. 115 poisonous species is the Wild Black Cherry (Prunus serotina (Fig*. 9), which is common in eastern Nebraska, and from thence eastward. Of it he says, 'Poisoning' is frequently caused in cattle by eating' the wilted leaves from branches thrown carelessly within their reach, or ignorantly offered as food. Children occasionally die from eating the kernels of the seed or by swallowing the fruit whole. The poison is formed in the leaves of detached branches by the chemical ac- tion of two non-poisonous sub- stances which are present In the plant. Under certain con- ditions these compounds liber- ate prussic acid, one of the most deadly poisons. The fresh leaves are generally considered harmless. As they begin to wither, however, the acid is formed, but as this is volatile it disappears from the foliage in a short time. These facts thus serve to explain how it is that only the partially wilted Fig. 9.- Wild Black Cherry (Prunus serotina), one-tliird natural size. (From Chesnut, U. S. Department Agriculture.) leaves are considered poisonous.' We have several other species in the state, namely, the Dwarf Wild Cherry (Prunus demissa) in central and western Nebraska, and the Choke Cherry (Prunus virginiana) in the ex- treme eastern part. The first is a shrub of not more than a few feet in height bearing large black cherries much like those of the Wild Black Cherry. It is so nearly related to the black cherry that there can be no doubt as to the probability of its having the same poisonous properties. In regard to all of the species of the genus Prunus, Chesnut says 'the seeds of all varieties of cherries and plums, both native and introduced, are subject to suspicion; the flesh of none of the species is in any way poisonous.' The Rose Family (Rosaceae). 61. Perhaps it may be allowable for me to call attention in this list to the fact that one of the favorite fruits of the summer is disagree-116 NEBRASKA STATE BOARD OF AGRICULTURE. ably poisonous to a few people. I refer to the Strawberry, which pro- duces a most unpleasant inflammation in those who are so unfortunate as to be affected. I have seen but few cases, and yet on inquiry I find that this peculiarity is not as rare as one might suppose. It seems quite odd to think of this luscious fruit as a poisonous one, and no doubt all of my readers who are 'immune,' so to speak, and who may eat all the strawberries they wish, will join me in thankfulness that no such calamity has befallen us. I can not think of a more disagree- able infirmity than one which would inhibit the eating of strawberries. The Senna Family (Caesalpiniaceae). 62. Until recently the plants of this family were placed in the Bean Family to be noticed next, but their flowers are not at all bean-flower like, al- though the pods resemble bean pods. The one plant which must be noticed here is the Kentucky Coffee Tree (Gymno- cladus dioica), a large, unarmed tree which grows quite com- monly in eastern and southern Nebraska. It may be distin- guished by the fact that it pro- duces large, even pods which hang from the tree long after the leaves have fallen (Fig. 10). The only other tree producing bean-like pods is the Honey Locust (Gleditsia triacanthos), a related, thorny tree which grows in nearly the same portions, of the state. The two trees may be distinguished by the fact that the Coffee Tree has thick, straight, even pods, while the Honey Locust pods are thin, and very crooked. The Coffee Tree contains a narcotic poison in its leaves, and the pulp in the pods. The pulp is quite dangerous to children, as it has a sweet taste. As these trees are quite commonly planted for ornamental purposes this poison- ous property should be known to the public. Fig. 10.—Kentucky Coffee Tree (Gymno cladus dioica), with pod at the side, both one-third natural size. (From Chesnut, U. S. Depart- ment Agriculture.)REPORT OF Tim BOTANIST. 117 The Bean Family (Papilionaceae). 63. This immense family contains a large number of plants which are of the greatest use to man, as beans, peas, lentils, peanuts, clovers, lupines, alfalfa, sanfoin, vetches, besides many gums and medicines. When we think of the clovers, alfalfas and other related forage plants it seems improbable that a dangerous poison may lurk in some of the wild species. And yet this improbable thing is a well-established fact, and there are more poisonous plants, and those suspected of being so, in this family than in any other with which I am acquainted. Dr. Rusby has recently shown* that the common Locust-tree (Robinia pseudacacia) is poisonous as to its roots and bark, and perhaps also as to its flowers. He cites cases of fatal results to children who ate of the roots. 64. The Loco-weeds, proper, be- long to the genus Astragalus and are common in the central and western states. They are mostly low plants, often woolly, and bear spikes of pretty flowers, resembling those of the peas and beans. The species to which attention has been mostly given , . . . . . , 7 ,7. . Fig. 11.—Loco-weed (Astragalus mohssimus), is the Astragalus molhsstmus (Fig. one-third natural size. (From Chesnut, U. 11), a plant about eight inches or S. Department Agriculture.) a foot in height, with compound leaves composed of from nine- teen to twenty-seven oval, obtuse, silky-hairy leaflets, and a spike of purple flowers. This, which may well be called the Common Loco-weed, is found throughout all but the extreme eastern part of Nebraska. It occurs in isolated cluiJips on the prairies, and is quite conspicuous, so that cattle and horses are no doubt attracted to it on this account. There has been much discussion in regard to the poisonousness of this plant, some experimenters asserting" that it contains nothing harmful, and some that they have fed large quantities to animals without bad results, and yet the fact remains that the plant is poisonous. Chesnutf *The Poisonous Plants of the Vicinity of New York City, by H. H. Rusby. (1895.) t Principal Poisonous Plants of the United States, by V. K. Chesnut in Bulletin 20 Division of Botany, U. S. Deprrtment of Agriculture. (1898.)118 NEBRASKA STATE BOARD OF AGRICULTURE. 0 C says of it: 'The damage done to the live-stock business by this weed is immense.' There are sixteen other species of this genus growing wild in Nebraska, and while little is known as to their poisonousness, it is pretty certain that they will ultimately be found to possess the same qualities. 65. The Crazy-weeds are related to the Loco-weeds, and in fact they are not gen- erally distinguished from them. They be- long, however, to another genus, namely, Aragallus, which differs from the Loco-weeds, proper, in having the front petals (keel) of the flower sharp-pointed, instead of blunt as they are iri the Loco-weeds. Otherwise the plants look much alike. There are many species of Crazy-weeds, but one of them has attained notoriety in Nebraska as a poison- ous plant, namely, Aragallus lambertii (Fig. 12). This is common from western Iowa to the Rocky Mountains, and resembles the Loco-weed described above, except that it is usually smaller, not so leafy, the leaflets are narrower, sharp pointed and less hairy, and the flowers are not as numerous on the spike, and are frequently much lighter colored, often being nearly white. Its poisonous action is quite similar to that of the Loco-weed. Our two other species probably possess the same properties. Other species in Montana are known to be poison- ous to sheep and horses. 66. The Rattle-boa) (Crotatoria sagittalis) is a spreading-hairy plant about a foot high, FSnral bearing simple leaves, solitary yellow flow- size. (From Chesnut, U. S. ers, and large brown pods which when ripe Department Agriculture.) contain a number of loose rattling seeds (Fig. 13). The plant is common in the rich lowlands of the eastern part of the state, where it sometimes covers considerable areas. Nearly twenty years ago my attention was first called to this plant as one which contained a harmful principle, and at that time I witnessed an experiment which indicated that jjoison is actually present in the green plant, although the plants which were used were somewhat wilted. A young horse was killed by being compelled to drink a quantity of water in which the green plants had been crushed. 67. Among the prettiest species of this family are the Lupines (of theREPORT OF THE BOTANIST. 119 genus Lupinus), and yet it has been shown beyond question that some of the species are poisonous. In Montana, where they have been studied most carefully, several species have been proved to be harmful to stock.* While none of the Montana species referred to are found in Nebraska I have no rea- son for thinking that ours will prove to be otherwise than poisonous. Our species are con- fined to the western portions of the state, where they should be watched carefully. 68. The White Tumbleweeds (spe- cies of Psoralea) are spreading- branched, white-hairy plants growing on the prairies, and bearing scattered (less commonly spicate) flowers. The plants often break off in the fall and become 'tumbleweeds,' rolling over the prairies and thus scat- tering their seeds. One of our most widely distributed species is the Common White Tumbleweed (Psoralea tenuiftora), and this has been studied in Montanat where it was shown to contain a poisonous principle. It is probable that of our nine other species some at least contain similar deleterious prop- erties, and the plants should be carefully watched. t Fig. 13.— Rattle-box (Crotalaria sagittalis), one-third natural size. (From Chesnut, U. S. Department Agriculture.) The Stah-flower Family (Loasaceae). 69. The Star-flowers are erect, herbaceous plants with rough-pubescent leaves, and terminal clusters of white or creamy, often large, star- shaped flowers. We have several species, one of which (Mentzelia oligospermia) is said by Halstedt to be poisonous to the touch. * The Buckeye Family (Hippocastanaeeae). 70. The Buckeyes are all trees, and of these we have but one native * Stock-poisoning Plants of Montana, by V. K. Chesnut and E. V. Wilcox, in Bulletin 26, Division of Botany, U. S. Department of Agriculture. (1901.) flbid. J The Poisonous Plants of New Jersey, by B. D. Halsted, in Bulletin 135, N". J. Agri- cultural Experiment Station. (1899.)120 NEBRASKA STATE BOARD OF AGRICULTURE. species, namely, the Ohio Buckeye (Aesculus glabra) which occurs in Pawnee, Richardson and Nemaha counties. The young shoots and the large brown seeds are quite poisonous to stock. The Sumac Family (Anacardiaceae). 71. These are woody plants ranging from weak climbers to small trees. The Smooth Sumach (Rhus glabra) is our largest representative, and as far as I am aware it possesses no harmful principle. So, too, the Skunk Bush (Rhus trilobata) of central and western Nebraska, which has a bad odor and nothing more; in fact I have often eaten the pleasantly acid berries when on my botanizing trips. 72. The Poison Ivy (Rhus radi- cans), a well-known climbing vine, is one of the most trouble- some of plants poisonous to the touch. It grows through- out the state, and although so painful to so many people, it is not commonly distinguished from the harmless Virginia Creeper (Parthenocissus quinque- folia). Let it be remembered that the Poison Ivy has three leaflets in each leaf (Fig. 14), and that the Virginia Creeper has five. This fact will enable anyone to tell the harmless from the harmful plant. Much has been written in regard to the nature of the poison con- tained in these plants. At one time an investigator announced that the poisonous material consisted of certain virulent bacteria which entered the pores of the skin and set up a violent inflammation. Dr. Piaff, of Boston, announced a few years ago that the active prin- Fig. 14.—Poison Ivy (Rhus radicans), one-third ciple was a non-volatile oil rent^gricultureT ^6SnUt' U'S'DePart" Which h® W succeeded in separating from the foliage. This is now the generally accepted view, but it must be remembered that there are well-authenticated cases of poisoning without contact, which could scarcely occur if the sole agent of infection is non-volatile. I myself was once a victim of such poisoning without contact. An assist-REPORT OF THE BOTANIST. 121 ant brought into my laboratory a tin box full of plants, among which were many flowering specimens of the Poison Ivy. The day was hot, and the assistant had walked in the sun for a mile or more, in bringing in the plants. Knowing my susceptibility to Poison Ivy poisoning he warned me not to touch the tin box or its contents. I therefore told him to open the box while I looked on and selected the plants which I wished him to preserve for pressing. As the box was opened I leaned over and looked in, being very careful not to come into contact with the box or the plants. As the assistant took up plant after plant I pointed to others and asked him in regard to the stations where he secured them. I was very careful, as I had been very severely poisoned many times before, and did not wish to have another experience of the discomfort. Yet in a day or two I found myself suffering with the usual inflammation, only the surfaces affected were those only which had been directly exposed when I leaned over the box of plants. My face was inflamed all over, except where my beard, mustache, eye- brows, and nose made projecting protections. Above these there were small areas entirely free from inflammation. The under side of my eyebrows (the 'overhang') was thoroughly poisoned, and so was the inside of my nose (the nostrils). My right hand was severely poisoned, but here again the distribution of the inflammation was peculiar, being confined to the parts which were directed downward as I pointed at the various specimens in the box. Thus the proximal and middle joints of the second, third and fourth fingers, and the under side of the wrist of that hand were badly affected, while the upper side of the hand was not poisoned at all. My left hand was not poisoned, and I account for this by the fact that it was kept back and not used in indicating plants to be examined by the assistant. 73. As this matter of poisoning without direct contact has been and is still disputed by some people, I shall be greatly obliged for informa- tion in regard to cases of supposed poisoning in this way. The Paksley Family (TJrribelliferae). 74. The plants of this family are easily distinguished from all others by the fact that the flowers (which are small) are arranged in more or less flat-topped clusters, composed* of radiating flower-stalks. In some cases these radiating stalks bear another set of still smaller stalks which are the ones which bear the flowers. Another thing which may enable one to be sure that the plant belongs to this family is the fact that the seed-pod is below the flower, and that it contains but two seeds. If these characters are taken together there need be no question as to the relationship of any plant of this family. They are all herbaceous, and mostly perennial, or at least biennial. Some of them furnish valuable food-plants, as the Parsnip, Carrot, and Celery, while others are used as condiments, as Coriander, Caraway, and Parsley. There is, however, a dangerous poison in many of the species122 NEBRASKA STATE BOARD OF AGRICULTURE. and it is probable that it is present to a less extent in all. 75. Water Hemlock (Gicuta maculata) is a tall, smooth- stemmed plant with more or less of purple streaking and spotting- on its surface. It attains a height of three to eight feet, and the stem is hollow. The leaves are much divided, and the leaflets are * sharply serrated on the mar- .gins (Fig. 15). The roots are fleshy and spindle-shaped, and each plant has several in a cluster. The small flowers are white, and are borne in flat-topped clusters at the summit of the plant. The whole plant is poisonous but the roots are the most viru- lent. This is probably the most deadly species of our flowering plants. It is likely that annually a considerable Fig. 15.—Water Hemlock (Cicuta maculata), one- proportion of the damage half natural size, with fruit at top, and section limits is of same at bottom, enlarged Ave times. (From (kme P°i»onous plants is Chesnut, U. S. Department Agriculture.) to be laid to this plant. 76. White-flowered Parsley (Lomatium nudicaule) a common low prairie plant with much-divided leaves, is known to be poisonous to stock.* The species of a related genus, Musenium, are suspected of possessing poisonous properties. The plants resemble those of the preceding species. The Honeysuckle Family (Caprifoliaceae). 76a. Here we find many pretty and interesting plants, and it is quite unexpected that any should be charged with being poisonous. The Black Haw (Viburnum prunifolium), Sheepberry (V. lentago), High-bush Cranberry (I7, opulus), are well-known edible berries, and the Snowball (V. opulus) and many kinds of Honeysuckles (species of Lonicera), equally well-known ornamental plants. Yet here we find some danger- ous poisons, as in the roots and bark of the Elder (Sambucus canadensis), and the roots of the Feverwort (Triosteum perfoliatum). Both of these * Stock-poisoning Plants of Montana, by Y. K. Ch( snut and E. Y. Wilcox, in Bulletin 26, Division of Botany, U. S. Department of Agriculture, (1901.)REPORT OF THE BOTANIST. have been shown by Dr. Rusby* to be dangerously poisonous, and he cites a case where several children died from the effects of eating the first under distressing circumstances. The Chicory Family (Cichoriaceae). 77. In this family we have the bland and healthful Lettuce, the whole- some Endive, and the nutritious Salsify, all freely used as foods, as well as the Dandelion and Chicory, which supply 'greens' for those 'who like that sort of thing.' The plants all contain a milky juice, and it is known that in some cases this includes a narcotic principle. Perhaps it is on this account that in Montana and Utah the Prairie Pink (Lygodesmia juncea) 'has been suspected by stockmen of being poisonous to stock.'! This plant is common in Nebraska, and is a low, spreading, almost leafless plant, bearing pretty pink-like flowers at the ends of the branches. I have not had any complaints from Nebraska in regard to this plant. The Ragweed Family (Ambrosiaceae). 78. Here we find some of our worst weeds, as the Ragweeds, Marsh Elders, and Cockleburs. The plants are mostly coarse, and possess an acrid and bitter principle which makes them quite disagreeable to the taste. Here too according to Halsted? we have a poisonous plant of no mean importance, since he says 'the Cocklebur (XantMum strumarium) has had many cases of death among swine attributed to it.' After admitting that a part of the injury may be mechanical from the action of the barbed spines on the burs, and the impaction of the burs in the stomach, he continues, 'there are however instances upon record which indicate that, in addition to the impaction in the stomach, the cockle- bur seed has strictly poisonous properties, reducing the action of the heart and causing death.' While I know of no case in Nebraska of any injury, it will be well for us to keep an eye on these unsightly weeds. We have here an additional reason for keeping them off from our farms. The Sunflower Family (Compositae). 79. This is the largest family of flowering plants, there being fully ten or possibly eleven thousand species in existence. In Nebraska there are between one hundred and fifty and two hundred native species growing wild upon the prairies and the High Plains. To a great extent they are not harmful as far as poisonousness is concerned, although many are quite persistent and troublesome weeds. Within recent years attention has been called to the fact that some of the species are poisonous, and as some of these are natives of Nebraska it is proper that they should be noticed here. 80. The Tall Cone-flower (Rudbeckia laciniata) is a perennial, much- *The Poisonous Plants of the Vicinity of New York City, by H. H. Rusby. (1895.) t Stock-poisoning Plants of Montana, by V. K. Chesnut and E. V. Wilcox, in Bulletin 26, Division of Botany, U. S. Department of Agriculture. (1901.) J The Poisonous Plants of New Jersey, by B. D. Halsted, in Bulletin 135, N. J. -Agri- cultural Experiment Station. (1899.)124 NEBRASKA STATE BOARD OF AGRICULTURE. branched, leafy plant three to ten feet high, growing* in thickets and in the borders of wood- lands, and bearing heads of yel- low flowers looking much like those of many wild sunflowers. In Montana it has been shown pretty certainly to be fatally poisonous to sheep, and in Mis- souri it is said to be fatal to swine.* The plant is common in nearly all parts of the state. 81. The Sneezeweed (Helenium autumnale) is a late-flowering plant very common in all parts of the state. It is a branching plant, usually about two feet high, bearing lance-shaped, sharp-pointed leaves, and many pretty, yellow, terminal flowers (Fig. 16). According to Chesnutf the poison 'exists principally in the flowers,' and there appears to be more poison in mature than in the young plants. 'Sheep, cattle, and horses that are un- familiar with the plant are often poisoned by it when driven to localities where it is abundant.' Halsted$ says that 'it frequently poisons live stock, and may prove fatal.' I have never known of a case of poisoning by this weed, but still have no doubt that poisoning does occur in the state. Fig. 16 —Sneeze weed (Helenium autumnale), one-third natural size. (From Chesnut, U. S. Department Agriculture.) V. LIST OF POISONOUS PLANTS ARRANGED ACCORDING TO THEIR EFFECTS. In order that a reference to the foregoing descriptions may be made more easily I have arranged the names of the poisonous plants here described according to their effects, whether they are harmful to man, or domestic animals, and whether they produce external or internal effects. The numbers following the names indicate the paragraphs in the preceding text. * Stock-poisoning Plants of Montana, by V. K. Chesnut and E. Y. Wilcox, in Bulletin 26, Division of Botany, U. S. Department of Agriculture. (1901.) t Principal Poisonous Plants of the United States, by V. K. Chesnut, in Bulletin 20, Division of Botany, U. S. Department of Agriculture. (1898.) X The Poisonous Plants of New Jersey, by B. D. Halsted, in Bulletin 135, N. J. Agri cultural Experiment Station. (1899.) REPORT OF THE BOTANIST. A. Plants poisonous to Man externally. . Anemonies, 27. Osage Orange, 42. Blood-root, 31. Poison Ivy, 72. Buttercups, 27. Red Cedar, 13. Ladies' Slippers, 25. Spurges, 45. Milkweeds, 57. Star-flowers, 69. Nettles, 41. B. Plants poisonous to Man internally. Anemonies, 27. Indian Turnip, 18. Ailanthus, 40. Jimson Weed, 55. Bacteria, 5. Locust-tree, 63. Baneberries, 27. Kentucky Coffee Tree, 62. Black Nightshade, 5 1. May Apple, 29. Bouncing- Bet, 34. Pasque Flower, 27. Castor-oil Plant, 47. Pokeweed, 35. Corn Cockle, 33. Potato balls, 53. Crotons, 46. Snow-on-the-Mountain, 45. Culver's Root, 59. Strawberry, 61. Elder, 76a. Toadstools, 10. Eeverwort, 76a. Water Hemlock, 75. Horseradish, 31a. Wild Black Cherry, 60. Indian ITemp, 56. Wild Poppy, 30. C. Plants more or less poisonous to Stock. Bacteria, 5. Lupines, 67. Birthwort, 16. Milkweeds, 57. Black Nightshade, 5 1. Morning Glories, 46, 47. Brakes, 12. Potato (sprouted), 53. Buckeye, 70. Prairie Pink, 77. Bur-balls, 6. Rattle-box, 66. Castor-oil Plant, 47. Red Cedar, 13. Cocklebur, 78. Red Synthyris, 58. Corn Smut, 9. Sneezeweed, 81. Crazyweeds, 65. Sorrel, 39. Darnel, 19, 20. Spreading Nightshade, 52. Death Camas, 15. Tall Coneflower, 80. Ergot, 8. Water Hemlock, 75. Eriogonums, 39. White-flowered Parsley, 76. Jimson Weed, 55. White Tumbleweeds, 68. Joint-rushes, 11. Wild Black Cherry, 60. Larkspurs, 28. Wild Iris, 22. Loco-weeds, 64. 126 NEBRASKA STATE BOARD OB" AGRICULTURE. VI. ALPHABETICAL INDEX TO ALL PLANT NAMES. Here as in the preceding- list the numbers refer to the paragraphs of this article. Acorns calamus, 18. Bloodroot, 31. Actaea rubra, 27. Blue-eyed Grass, 21, 23. Aesculus glabra, 70. Blue Flags, 21. Agropyrum repens, 20. Boerhavia, 37. Agrostemma githago, 33. Bouncing Bet, 34. Ailanthus, 40. Brakes, 12. Ailanthus glandulosa, 40. Broom-corn, 19. Alfalfa, 19. Buckeye Family, 70. Alfalfas, 63. Buckeyes, 70. Algae, 6. Buckwheat Family, 38-40. Allionia incarnata, 37. Buffalo-burs 54. Allionia nyctaginea, 37. Bur-balls, 6. Ambrosiaceae, 78. Buttercup Family, 26-28. American Hellebore, 14. Buttercups, 26, 27. Anacardiaeeae, 71-73. Caesalpiniaceae, 62. Anemone, 27. Calamus, 18. Anemonies, 27. Calla-Lily Family, 18. Apocynaceae, 56. Caprifoliaceae, 76a. Apocvnum androsaemifolium, 56. Caraway, 74. Apocynum cannabinum, 56. Carnations, 32. Araceae, 18. Carrot, 74. Aragallvis lambertii, 65. Caryophyllaceae, 31-34. Argemone intermedia, 30. Castor-oil Plant, 47. Arisaema triphyllum, 18. Celery, 74. Asclepiadaceae, 57. Cherries, 60. Asclepias, 57. Chicory Family, 77. Asclepias eriocarpa, 57. Chicory, 77. Asclepias speciosa, 57. Choke Cherry, 60. Astragalus mollissimus, 64. Cichoriaceae, 77. Atropa belladonna, 50. Cicuta maculata, 75. Bacteria, 5. Clover, 19. Baneberries, 27. Clovers, 63. Barberry Family,. 29. Cockleburs, 78. Barley, 19. Coffee Tree, 62. Bean Family, 62, 63-68. Colchicum autumnale, 14. Beans, 63. Compositae, 79-81. Bearded Darnel, 19, 20. Convallaria majalis, 14. Belladonna, 50. Convolvulaceae, 48-49. Berberidaceae, 29. Convolvulus sepium, 49. Big-rooted Morning Glory, 48. Coriander, 74. Birthwort, 16. Corn, 9. Black Haw, 76a. Corn Cockle, 33. Black Nightshade, 51, 52. Corn Smut, 9. VI. ALPHABETICAL INDEX TO ALL PLANT NAMES. Here as in the preceding- list the numbers refer to the paragraphsREPORT OF THE BOTANIST. 127 Crazy-weeds, 65. Crotalaria sagittalis, 66. Crotons, 46. Croton texensis, 46. Crown Imperial, 14. Cruciferae, 31 a. Culver's-Eoot, 59. Cypripedium candidum, 25. Cypripedium hirsutum, 25. Cypripedium reginae, 25. Dandelion, 77. Darnel, 19, 20. Datura stramonium, 55. Deadly Nightshade, 50. Death Camas, 15. Delphinium albescens, 28. Delphinium bicolor, 28. Delphinium glaucum, 28. Delphinium nelsoni, 28. Delphinium tricorne, 28. Docks, 38. Dogbane Family, 56. Drupaceae, 60. Dwarf Wild Cherry, 60. Early Wake Robin, 16. Egg-plant, 50. Elder, 76a. Endive, 77. Equisetum arvense, 11. Equisetum palustre, 11. Ergot, 8. Eriogonum, 39. Eriogonums, 39. Euphorbiaceae, 44-47. Euphorbia corollata, 45. Euphorbia glyptosperma, 45. Euphorbia maculata, 45. Euphorbia marginata, 45. Euphorbia serpyllifolia, 45. Fern, 12. Henbane, 50. Highbush Cranberry, 76a. Feverwort, 76a. Figwort Family, 58-59. Flowering Spurge, 45. Four-o'clock, 36. Four-o'clock Family, 36-37. Fritillaria imperialis, 14. Frog-Spittles, 6. Fungi, 7. Garget, 35. Gleditsia triacanthos, 62. Gramineae, 19-20. Grass Family, 19-20. Great Nettle, 41. Gymnocladus dioica, 62. Heartseases, 38. Helenium autumnale, 81. Hippocastanaceae, 70. Honey Locust, 62. Honeysuckle Family, 76$. Honeysuckles, 76a. Hop, 43. Horse Nettle, 54. Horseradish, 31a. Horsetails, 11. Humulus lupulus, 43. Hyoscyamus niger, 50. Indian Apple, 29. Indian Hemp, 56. Indian Turnip, 18. Ipomoea leptophylla, 48. Ipomoea pandurata, 48. Ipomoea purpurea, 48. Iridaceae, 21-23. Iris, 21. Iris Family, 21-23. Iris versicolor, 22. Jack-in-the-Pulpit, 18. Jimson Weed, 55. Joint-rushes, 11. Juniperus virginiana, 13. Kentucky Blue-grass, 8. Kentucky Coffee Tree, 62. Ladies' Slipper, 25. Larkspurs, 28. Lentils, 63. Leptandra virginica, 59. Lettuce, 77. Leucocrinum montanum, 17. Liliaceae, 14-17. Lily Family, 14-17.128 NEBRASKA STATE BOARD OF AGRICULTURE. Lily-of-the-Valley, 14. Loasaceae, 69. Loco-weeds, 64, 65. Locust-tree, 63. Lolium linicola, 19. Lolium temulentum, 19. Lomatium nudicaule, 76. Lonicera 76a. Lupines, 63, 67. Lupinus, 67. Lycopersicum lycopersicum, 50. Lygodesmia juncea, 77. Maize, 19. Mandrake, 29. Man-of-the-Earth, 48. Marsh Elders, 78. Marvel of Peru, 36. May Apple, 29. Meadow Saffron, 14. Mentzelia ologosperma, 69. Milkweed Family, 57. Milkweeds, 44, 57. Mirabilis dichotoma, 37. Mirabilis jalapa, 36. Moraceae, 42-43. Morning- Glory, 48. Morning Glory Family, 48-49. Morus rubra, 43. Mulberry, 43. Mulberry Family, 42-43. Musenium, 76. Mushroom, 10. Mustard Family, 31a. Nelson's Larkspur, 28. Nettle Family, 41. Nightshade Family, 50-55. Nyctaginaceae, 36-37. Oats, 19. Ohio Buckeye, 70. Orchidaeeae, 24-25. Orchid Family, 24-25. Osage Orange, 42. Papaveraceae, 30-31. Papilionaceae, 63-68. Parsley, 74. Parsley Family, 74-76. Parsnip, 74. Parthenocissus quinquefolia, 72. Pasque-flowers, 27. Peanuts, 63. Peas, 63. Phytolaccaceae, 35. Phytolacca decandra, 35. Picraena excelsa, 40. Pink Family, 32-34. Pinks, 32. Pisonia erecta, 37. Plum Family, 60. Plums, 60. Podophyllum peltatum, 21). Poison Ivy, 72. Poke, 35. Pokeweed, 35. Pokeweed Family, 35. Polygonaceae, 38-40. Polygonum emersum, 38. Pond Scums, 6. Poppy, 30. Poppy Family, 30-31. Potato, 50, 53. Potato-balls, 53. Prairie Pink, 77. Prunus demissa, 60. Prunus serotina, 60. Prunus virginiana, 60. Psoralea tenuiflora, 68. Pteridium aquilinum, 12. Pulsatilla, 27. Quack Grass, 20. Quassia, 40. Quassia Family, 40. Ragweed Family, 78. Ragweeds, 78. Ranunculaceae, 26-28. Ranunculus repens, 27. Ranunculus sceleratus, 27. Rattle-box, 66. Red Cedar, 13. Red Synthyris, 58. Rhus glabra, 71. Rhus radicans, 72. Rhus trilobata, 71.REPORT OF THE BOTANIST. 129 Ricinus communis, 47. Rivularia fluitans, 6. Robinia pseudacacia, 63. Roripa armoracia, 31a. Rosaceae, 61. Rose Family, 61. Rudbeckia laciniata, 80. Rumex, 38. Rumex acetosella, 39. Rye, 8, 19. Salsify, 77. Sambucus canadensis, 76a. Sand Lily, 17. Sanfoin, 63. Sanguinaria canadensis, 31. Saponaria officinalis, 34. Scoke, 35. Scouring-rushes, 11. Scrophulariaceae, 58-59. Senna Family, 62. Sheepberry, 76a. Showy Ladies' Slipper, 25. Showy Milkweed, 57. Simarubaceae, 40. Sisyrinchium campestre, 21, 23. Skunk Bush, 71. Slender Nettle, 41. Smooth Sumach, 71. Sneezeweed, 81. Snowball, 76a. Snow-on-the-Mountain, 45. Solanaceae, 50-55. Solanum carolinense, 54. Solanum dulcamara, 50. Solanum esculentum, 50, 53. Solanum melongena, 50. Solanum nigrum, 51. Solanum rostratum, 54. Solanum triflorum, 52. Sorghum, 19. Sorrel, 39. Spreading Dogbane, 56. Spreading Nightshade, 52. Spurge Family, 44-47. Star-flower Family, 69. Star-flowers, 69. Strawberry, 61. Sumac Family, 71-73. Sunflower Family, 79-81. Sweet Williams, 32. Synthyris rubra, 58. Tall Cone-flower, 80. Texan Croton, 46. Toadstools, 10. Tomato, 50. Toxylon pomiferum, 42. Trillium nivale, 16. Triosteum perfoliatum, 76a. Tulip, 14. Tulipa gesneriana, 14. Umbelliferae, 74-76. Urtica, 41. Urticaceae, 41. Urtica dioica, 41. LTrtica gracilis, 41. Urticastrum, 41. Urticastrum divaricatum, 41. Veratrum viride, 14. Vetches, 63. Viburnum lentago, 76a. Viburnum opulus, 76a. Viburnum prunifolium, 76a. Virginia Creeper, 72. Water Hemlock, 75. Water-peppers, 38. Wheat, 19. White-flowered Parsley, 76. White Tumbleweeds, 68. Wild Black Cherry, 60. Wild Four-o'clock, 37. Wild Iris, 22. Wild Morning Glory, 49. Wild Poppy, 30. Wild Rye, 8. Wild Wheat Grass, 8. Wood Nettle, 41. Xanthium strumarium, 78. Yellow-berry, 29. Zygadenus elegans, 15. Zygadenus nuttallii, 15. Zygadenus venenosus, 15.This book is a preservation facsimile produced for the University of Illinois, Urbana-Champaign. It is made in compliance with copyright law and produced on acid-free archival 60# book weight paper which meets the requirements of ANSI/NISO Z39.48-1992 (permanence of paper). Preservation facsimile printing and binding by Northern Micrographics Brookhaven Bindery La Crosse, Wisconsin 2015