138 
lacerated. In the mature plant the warts have generally disap- 
peared from the pileus and sometimes its margin is curved up- 
ward. 
AMANITA ABRUPTA,. 
Pileus thin, broadly convex or nearly plane, verrucose with 
small angular or pyramidal erect somewhat evanescent warts, white, 
slightly striate on the margin, flesh white; lamellae moderately 
close, reaching the stem and sometimes terminating in slightly 
decurrent lines upon it, white ; stem slender, glabrous, solid, bulb- 
ous, white, the bulb abrupt, subglobose, often coated below by the 
white persistent mycelium, the annulus membranous, persistent ; 
spores broadly elliptical or subglobose, .0003-.0004 in. long, 
.00025-.0003 broad. Pileus 2-4 in. broad; stem 2.5—4 in. long, 
3-4 lines thick. 
Woods. Auburn, Alabama. July. Underwood. 
The chief distinguishing mark of this species is its abrupt 
nearly globose bulbous base of the stem. This is somewhat flat- 
tened above and is sometimes longitudinally split on the sides. 
The small warts of the pileus are easily separable, and in mature 
specimens they have often wholly or partly disappeared. The 
remains of the volva are not present on the bulb in mature dried 
specimens, which indicates that the species should be placed in the 
same group with A. rudescens, A. spissa, etc. The latter species 
has the bulb of the stem similar to that of our plant, but the color 
of the pileus and other characters easily separate it. 
AMANITA PRAIRIICOLA. 
Pileus thin, convex, slightly verrucose, white, more or less 
tinged with yellow, even on the margin, flesh white ; lamellae rather 
broad, subdistant, reaching the stem, white ; stem equal or slightly 
tapering upward, somewhat squamose toward the base, white or 
whitish, the annulus persistent ; spores large, broadly elliptical, 
.0005—.00055 in. long, .0003—.00035 broad. Pileus 1.5-3in. broad; 
stem 2~—2.5 in. long, 2—4 lines thick. 
Bare ground on open prairies. Kansas. September. E. Bar- 
tholomew. 
This species belongs to the same tribe as the preceding one. 
The only evidence of the presence of a volva shown by the dried 
specimens is found in a few inconspicuous, but separable warts on 
the pileus. There is no well marked bulb to the stem and no evi- 
dent remains of a volva at its base. | 
