60 TWENTY-SIXTH REPORT ON THE STATE MUSEUM. 
edge, whitish, becoming ferruginous-brown ; stem smooth, hollow, 
slightly thickened at the base; annulus thin, fugacious, sometimes 
adhering to the margin of the pileus ; flesh white ; spores .00033 x 
.0002 in. 
Plant 3'-4' high, pileus 2’-3' broad, stem 2"—4" thick. 
Ground. Center. June. 
The surface of the pileus sometimes cracks into areas. The 
taste is bitter. The color of the spores is not a decided brown, and 
the plant might, with almost equal propriety, be referred to the 
subgenus Pholiota. 
Agaricus (HypHotoma) pHYLLoGENUs Peck. 
Pileus firm, convex, sometimes slightly umbonate, hygrophanous, 
reddish-brown when meist, alutaceous when dry; lamelle plane, 
broad, close, brown, white on the edge; stem equal, fibrillose, 
stuffed or hollow, spreading out at the base into a thin flat disk; 
spores pale-brown, subglobose, .0002 in. in diameter. 
Plant 8’-12" high, pileus 2"-4" broad, stem .5" thick. 
Fallen leaves in woods. Worcester. July. 
This is a very small but distinct species, remarkable for the disk- 
like base of the stem by which it is attached to the leaves on which 
it grows. 
Coprinus instants Peck. 
Pileus campanulate, thin, sulcate-striate to the disk, grayish 
fawn color, the smooth disk sometimes cracking into small areas or 
scales ; lamellee ascending, crowded ; stem hollow, slightly fibrillose, 
striate, white; spores rough, .0004 x .00028 in. 
Plant 4-5’ high, pileus 2'-3' broad, stem 3" thick. 
About the roots of trees in woods. Worcester. July. 
The species is remarkable for its rough spores. In size and 
general appearance it bears some resemblance to C. atramentarius. 
Coprinus anauLtatus Peck. 
Pileus submembranaceous, hemispherical or convex, plicate-sul- 
cate, the disk smooth; lamelle subdistant, reaching the stem, 
whitish, then black; stem equal, smooth, whitish; spores com- 
pressed, angular, subovate, .0004 x .00033 in. 
Plant 1'-2’ high, pileus 6"-12" broad, stem .5” thick. 
In woods. Croghan. September. 
The specific name has reference to the angular character of the 
spores. These in shape have some resemblance to a very blunt 
arrow-head, they being slightly excavated on each side of the base 
