44 
Ground in woods. Worcester and Croghan. July and Septem- 
ber. 
The lemon color of the lamellae and the root-like prolongation of 
the stem characterize this species. 
Agaricus (Tricholoma) virescens, Peck. 
Pileus convex or expanded, sometimes depressed centrally, moist, smooth, 
dingy-green, the margin sometimes wavy or lobed ; lamellae close, gradually 
narrowed toward the outer extremity, rounded or slightly emarginate at the 
inner, white; stem subequal, stuffed or hollow, thick but brittle, whitish, 
sometimes tinged with green; spores broadly elliptical, .0002' x .00015.. 
Plant 3-5’ high, pileus 3’-5' broad, stem 6’-12” thick. 
Mossy ground in open woods. North Elba. July. 
Agaricus (Tricholoma) fumidellus, Peck. 
Pileus subumbonate, smooth, moist, dingy-white or clay colored, clouded 
with brown ; lamellae close, subventricose, whitish ; stem equal, smooth, solid, 
whitish ; spores, .00018’ x .00015’. 
Plant 2-3’ high, pileus 1-2’ broad, stem 2”-3” thick. 
Ground in woods. New Scotland. October. 
The disk is generally darker than the margin. The pileus be- 
comes paler in drying. The stem splits easily. 
Agaricus (Tricholoma) fallax, Peck. 
Pileus firm, convex or expanded, rarely depressed in the center, moist, 
smooth, dull saffron color; lamellae crowded, narrow, tapering toward the 
outer extremity, rounded at the inner, yellow; stem short, smooth, stuffed or 
hollow, usually tapering toward the base, colored like the pileus; spores mi- 
nute, subelliptical, .00012’ long. 
Plant gregarious, 1'-1.5' high, pileus 6’-15” broad, stem 1” thick. 
Ground under spruce and balsam trees. North Elba. July. 
Agaricus (Tricholoma) thujinus, Peck. 
Pileus convex or centrally depressed, smooth, hygrophanous, pale alutace- 
ous, the margin generally irregular, wavy or lobed; lamellae crowded, thin, 
abruptly emarginate, alutaceous; stem slightly thickened at the top, smooth, 
hollow, concolorous, whitish-villous at the base. 
Plant 2’ high, pileus 2’ broad, stem 2’-3” thick. 
Swampy ground under Thuja occidentalis. Memphis. August. 
