NATURAL BIST0R1 81 i;\ El 



equal or attenuated upwards, slightly firm, greaved at the La- 

 the separable volva which has an entire or obtuse ma 



Pileus 10 cm. broad; stem 7.") to 1<> cm. high, L to 1 



thick. 



Ground in woods, (den Ellyn. August. Spores in our p 

 broadly elliptical, 8 to 9 x 5 to (i \x. 



Amanita abrupta Pk. 



Pileus thin, broadly convex or nearly plane, covered wit 

 small angular or pyramidal, erect, somewhat evanescenl w 

 white, slightly striate on the margin; flesh white. 



Lamellae moderately close, reaching the stem and sometin 

 terminating in slightly decurrenl lines upon it, white. 



Stem slender, glabrous, solid, bulbous, white the bulb abrupt, 

 subglobose, often coated below by the white persisted mycelium 

 the ring membranous, persistent. Spores broadly elliptical or 

 subglobose, 8 to 10 x 6 to 8 /*. 



Pileus .1 to 10 cm. broad; stem 6 to 10 cm. long, 6 to 8 mm. 

 thick. 



Woods, Winfield. August. The small, pyramidal wart- 

 more numerous toward the center of the pileus. The volva wholly 

 disappears. The globose bulb in our specimens is 2.5 cm. or mot 

 in diameter. 



Amanita rubescens Fr. 



Pileus warty, even, but slightly striate on the margin, mori 

 less tinged with dingy-red or brownish-red. 



Lamellae white or whitish, narrowed behind. 



Stem equal or slightly tapering upwards, squamulose, stuffed 

 or hollow, thickened or bulbous at the base, slightly strii 

 the top, annulate, whitish or pallid; flesh becoming reddish wl. 

 wounded. 



Spores elliptical, 7.5 to 9 x 5 to 6 /a. Pileus 7.5 to l'» cm. 

 broad; stem 10 to 15 cm. high, 8 to 12 mm. thick. The volva 

 wholly friable, and often disappears from the base of the stem or 

 bulb. 



Woods, throughout, but not common. Gregarious, >n- 



ally somewhat caespitosc. Sometimes very large. Plants we 

 found in woods at Glen Ellyn and Winfield, in L902, with the 

 pileus measuring 17 cm. or more in width, and with the stem 

 cm. thick. One specimen had the lamellae abortive and 

 torn into large scales. Another consisted only >mewha 



flattened, obconic stem, 15 cm. long, 20 cm. in circumferen 

 the pileus reduced to a mere border and gills wholly want; 



AMANITOPSIS. 



Plants with a volva but no annulus; hymenophore d 

 from the fleshy stem; lamellae free or adnexed. All growii 

 the ground. Spores white. 



