Common over the United States. West Virginia, New Jersey, Pennsylvania, May to November. It appeared at Mt. Gretna, Pa., on May 28, 1899. _McIlvaine._ The absence of a ring separates white forms of A. volvata and A. vaginata. The virulence of its poison is the same as that of A. phalloides. =A. magnivela´ris= Pk.—_magnus_, large; _velum_, veil. =Pileus= convex or nearly plane, glabrous, slightly viscid when moist, even on the margin, white or yellowish-white. =Gills= close, free, white. =Stem= long, nearly equal, glabrous, white, furnished with a large membranous white annulus, sheathed at the base by the appressed remains of the membranous volva, the bulbous base tapering downward and radicating. =Spores= broadly elliptical, 10×6–8µ. =Pileus= 3–5 in. broad. =Stem= 5–7 in. long, 4–6 lines thick. Solitary in woods. Port Jefferson, Suffolk county. July. The species resembles Amanita verna, from which it is separated by its large persistent annulus, the elongated downwardly tapering bulb of its stem, and especially by its elliptical spores. _Peck_, 50th Rep. N.Y. State Bot. I have not seen this species. Its resemblance to A. verna is enough to place the ban upon it until it has been tested. =A. map´pa= Fr.—_mappa_, a napkin. From the volva. =Pileus= 2–3 in. broad, commonly white or becoming yellow, slightly fleshy, convexo-plane, obtuse or depressed, orbicular, _dry_, margin for the most part even. =Stem= 2–3 in. long, 3–5 lines thick, stuffed then hollow, almost equal above the bulb, rather smooth, white. =Ring= superior, soft, lax, here and there torn. =Volva= regularly _circularly split_, somewhat obliterated; the globoso-bulbous base united with the stem, with an acute and distant margin; the portion covering the pileus divided into broad, irregular, somewhat separating scales. =Gills= annexed, crowded, narrow, shining, white. _Fries._ =Odor= stinking. The color is that of A. phalloides, with which A. virosa exactly agrees, more rarely straw color, lemon-yellow, becoming green. In mixed woods. Frequent. _Stevenson._ =Spores= spheroid, 7–10µ _K._; 8–9×6–8µ _B._; subglobose, 7–9µ diameter _Massee_. New York woods and fields, common, September to October, _Peck_, 22d Rep.; North Carolina, _Curtis_; New England, _Frost_; Minnesota, _Johnson_; Ohio, _Morgan_; District Columbia, _Miss Taylor_. POISONOUS. Probably but a variety of A. phalloides. =A. spre´ta= Pk.—_spreta_, hated. (Plate VI, fig. 1, p. 6.) =Pileus= subovate, then convex or expanded, smooth or adorned with a few fragments of the volva, substriate on the margin, whitish or pale-brown. =Gills= close, reaching the stem, white. =Stem= equal, smooth, annulate, stuffed or hollow, whitish, finely striate at the top from the decurrent lines of the lamellæ, not bulbous at the base, but the volva rather large, loose, subochreate. =Spores= elliptical, generally with a single large nucleus, 10–13×6–8µ. =Plant= 4–6 in. high. =Pileus= 3–5 in. broad. =Stem= 4–6 lines thick.