. Observations on recent cases of mushroom poisoning in the District of Columbia. 22 the cup which this species possesses, in common with others sup- posedly poisonous, is especially characteristic. It is usually situated well beneath the surface of the ground and should be carefully dug out when one is securing specimens for identification. Specimens occur, however, in which the inner surface of the cup is attached throughout to the stem, so that it presents the appearance, not of a cup, but of a mere bulbous base. The death cup is a species not so abundant in the vicinity of Washington as th
. Observations on recent cases of mushroom poisoning in the District of Columbia. 22 the cup which this species possesses, in common with others sup- posedly poisonous, is especially characteristic. It is usually situated well beneath the surface of the ground and should be carefully dug out when one is securing specimens for identification. Specimens occur, however, in which the inner surface of the cup is attached throughout to the stem, so that it presents the appearance, not of a cup, but of a mere bulbous base. The death cup is a species not so abundant in the vicinity of Washington as the last, yet of rather frequent occurrence in rich oak woods. At Takoma Park it occurs in abundance. The lot that. Fig. 26.—Death cup, Amanita phalloides. Poisonous. One-half natural size. caused the death of Chung Yu Ting in 1894 were gathered by him in the oak and hickory woods at Bethesda Park and identified by the microscopist of the Department of Agriculture as belonging to this species. The poisonous principle of the death cup, according to the researches of Kobert, is of a totally different nature from that of the fly amanita. It is known as phallin and is one of the so-called tox- albumins, extremely virulent poisons found not only in plants but in rattlesnakes and some other poisonous animals. They are the sub- stances that cause death in diphtheria, typhoid fever, Asiatic cholera, and various other Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Coville, Frederick V. (Frederick Vernon), 1867-1937; United States. Divison of Botany; United States. Department of Agriculture. Washington, D. C. : U. S. Dept. of Agriculture, Division of Botany
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmushroompoisoning
