38 THIRTIETH REPORT ON THE STATE MUSEUM. 
~ 
Ground in woods. Mechanicsville. October. 
The striated appearance of the lamelle is due to the presence 
of small transverse vein-like elevations. The stem is almost 
chalky-white. The odor is quite perceptible and peculiar. 
AGARICUS (CLITOCYBE) APERTUS %. Sp. 
Pileus convex, then expanded or centrally depressed, often 
irregular, whitish with a lilac tinge and often one or two darker 
zones, shining; lamelle close, adnate or slightly decurrent, 
whitish, often with a faint pinkish tinge ; stem short, equal or 
narrowed toward the base, solid, whitish; odor farinaceous, 
taste unpleasant. 
Plant gregarious or cespitose, 1-2’ high, pileus about 1’ 
broad, stem 1” thick. 
Grassy ground in pastures and along highways. Maryland, 
Otsego county. September. 
In the dried specimens the lamelle often assume a pale cin- 
namon hue. 
AGARICUS (CLITOCYBE) FLAVIDELLUS 2. sp. 
Pileus thin, convex, then expanded or centrally depressed, 
often irregular, hygrophanous, glabrous; lamelle narrow, 
crowded, adnate or subdecurrent; stem equal, glabrous, 
hollow. 
Plant gregarious, about 2’ high, pileus 1’ broad, stem 1.5’—2’ 
thick. . 
Wet swampy ground. Maryland. September. 
The whole plant hasa uniform dirty yellowish hue when 
fresh. The pileus becomes whitish in drying. 
AGARICUS (CLITOCYBE) PELTIGERINUS 7. Sp. ) 
Pileus nearly plane, smooth, umbilicate, hygrophanous, 
brown, striatulate on the margin when moist, whitish or pale- 
gray when dry; lamelle rather distant, sometimes branched, 
venose-connected, decurrent, a little paler than the moist pileus; 
stem nearly equal, rather firm, solid, smooth, paler than the 
pileus, often with a minute white tomentum toward the base ; 
spores elliptical, .0003’ long, with a slight apiculus at the base. 
Plant 6’-10" high, pileus 2’-5” broad, stem less than 1” thick. 
On decaying Peltigera. Oneida. H. A. Warze. North 
Greenbush. May. : 
A small species remarkable for its peculiar habitat. Some- 
times the stems of two or three plants are united at the base, 
thus manifesting a tendency to become cespitose. 
