=A. vagina´ta= Roze—_vagina_, a sheath. (Plate X, figs. 1, 2, p: 28.) =Pileus= thin, fragile, glossy, smooth except in rare instances where a few fragments of the volva adhere to it for a time, deeply and distinctly striate on the margin, sometimes umbonate. =Flesh= white, in the dark forms grayish under the skin. =Stem= ringless, sometimes smooth, but generally mealy or floccose, hollow or stuffed with a cottony pith, _not bulbous_. =Volva= long, thin, fragile, closely sheathing yet free from the stem, except in the lower part, easily detachable and frequently remaining in the ground when the plant is pulled. =Color= variable, generally mouse-gray, sometimes livid, tawny-yellow or white, in one variety a rich date-brown. =Spores= globose, 8–10µ broad _Peck_; elliptical 10×7–8µ _Massee_. Var. _liv´ida_ Pers.—livid. Leaden brown, gills dingy. (Plate X, fig. 2, p. 28.) Var. _ful´va_ Schæff.—yellowish. Tawny-yellow or pale ochraceous. This plant is widely dispersed, having been reported from many localities in the United States, also from Nova Scotia and Greenland. On ground in woods and on margins of woods, under trees, in shaded grassy places. Sometimes in open stubble and pastures. June to frost. Mt. Gretna, September, 1899, found a cluster on decayed chestnut stump. Various colors abound—hazel, brown, gray, yellow, whitish. The caps and stems are tender as asparagus tips, but without much distinct flavor when cooked. Great care must be taken to distinguish these forms from Amanita spreta Pk. which is poisonous. See heading of genus—Amanitopsis. =A. niva´lis= Grev.—snowy. (Plate X, fig. 3, p. 28.) =Pileus= at first ovate, then convex or plane, smooth, _striate on the thin margin, white_, sometimes tinged with yellow or ochraceous on the disk. =Flesh= white. =Gills= subdistant, white, free. =Stem= equal, rather tall, nearly smooth, _bulbous_, stuffed, white; the volva very fragile, _soon breaking up into fragments or sometimes persisting in the form of a collar-like ring at the upper part of the bulb_. =Spores= globose, 7.5–10µ in diameter. =Plant= 4–6 in. high. =Pileus= 2–3 in. broad. =Stem= 2–4 lines thick. July to October. It approaches in some respects A. Frostiana, but its larger size, smooth pileus, lighter color and the absence of an annulus will easily distinguish it from that species. _Peck_, 33d Rep. N.Y. State Bot. Specimens have been repeatedly found by the writer in open oak woods near Philadelphia. A strong, unpleasant bitter, which appears to develop while cooking, renders it unpalatable. It is harmless, but its use is not advised.