. The cultivated mushroom ... Mushroom culture. [from old catalog]. 86 TECHNICAL STUDIES AMANITA ^ The cap and stem are readily separated from each other, and the latter bears a ring. At the base of the stem is a cup or volva, which, with the ring, distinguishes this genus from Lepiota and Amanitop- sis;'that is, Amanita has both ring and volva, Lepiota only the ring, and Amanitopsis only the volva. The volva breaks into fragments and disappears in a few species of Amanita, and only the young plants can then be told with certainty from Lepiota. Amanita contains practically all the deadly poiso
. The cultivated mushroom ... Mushroom culture. [from old catalog]. 86 TECHNICAL STUDIES AMANITA ^ The cap and stem are readily separated from each other, and the latter bears a ring. At the base of the stem is a cup or volva, which, with the ring, distinguishes this genus from Lepiota and Amanitop- sis;'that is, Amanita has both ring and volva, Lepiota only the ring, and Amanitopsis only the volva. The volva breaks into fragments and disappears in a few species of Amanita, and only the young plants can then be told with certainty from Lepiota. Amanita contains practically all the deadly poisonous species of the gill fungi. Although several species are edible, in particular, Caesar's mushroom, the danger of mistaking a poisonous Amanita for an edible one is so great that every one should take the greatest pains to avoid eating any Amanita whatsoever, and Especially mistaking it in the young button stage for a pufifball, or in old age for a Lepiota. The ancient name for some FIGURE 1. AMANITA PHALLOIDES Deadly! KEY TO THE SPECIES 1. Cap typically white, rarely yellowish to olive or brownish; volva with more or less of a free border i Prof. F. R. Clements in "Minnesota Plant Studies, A. phalloides Part 4, p. 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 Bureau of mushroom industry, Chicago. [from old catalog]. Chicago, Bureau of mushroom industry
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