Parr 6, 1916] AGARICACEAE 411 
58. Clitocybe pusilla Peck, Bull. Torrey Club 22: 199. 1895. 
Pileus hemispheric to nearly plane, obtuse with a small umbo, densely gregarious or sub- 
cespitose, 5 to 15 mm. broad; surface grayish, dry, pruinose: context often whitish; lamellae 
adnate or decurrent, crowded, narrow, white: spores subglobose or very broadly ellipsoid, 
4-5 » long: stipe short, pruinose, grayish, solid, 1-2 em. long, 2 mm. thick. 
TYPE LocaLiry: Pasadena, California, 
Hasitat: On manure. 
DISTRIBUTION: Known only from the type locality. 
59. Clitocybe subfumosipes Murrill, Mycologia 5: 212. 1913. 
Pileus small, rather thin, convex to plane, gregarious to subcespitose, 2.5 cm. broad; 
surface white, smooth, glabrous, shining, avellaneous on the small umbo, margin entire, con- 
colorous, inflexed on drying: lamellae decurrent, rather broad and distant, white, becoming 
discolored on drying: spores ellipsoid, smooth, hyaline, 5-6 X 2.5-3.5 4: stipe equal, smooth, 
pruinose, especially above. white changing to pale-fumosous on drying, hollow, 3-4 cm. long, 
2-3 mm. thick. 
TYPE LOCALITY: Seattle, Washington. 
Hasrrat: In humus in woods. 
DistRisvution: Known only from the type locality. 
60. Clitocybe microspora Peck, Bull. Torrey Club 36: 331. 1909. 
Pileus thin, broadly convex or slightly depressed at the center, often eccentric, 2.5-6 cm. 
broad; surface dry, glabrous or finely and obscurely fibrillose when old, white or cream-colored, 
margin sometimes irregular or lobed: context white, the odor and taste farinaceous; lamellae 
thin, crowded, narrow, unequal, decurrent, white: spores minute, globose or broadly ellipsoid, 
3-4 uw: stipe equal, subcartilaginous, hollow, concolorous, 2.5-3 em. long, 6-8 mm. thick. 
Type LocaLtrry: Claremont, California. 
DisrrRisutTion: Known only from the type locality. 
61. Clitocybe subdicolor Murrill, sp. nov. 
Pileus thin, convex to depressed, gregarious, 2-4 cm. broad; surface smooth, glabrous, 
moist, hygrophanous, whitish or yellowish, margin thin, white, entire: context thin, watery, 
whitish, the taste somewhat nutty, the odor not characteristic; lamellae short-decurrent 
or adnate, narrow, of medium distance, white, sometimes becoming slightly discolored or with a 
faint lilac tint: spores ellipsoid, smooth, hyaline, 5-7 X 3-4 u: stipe central, subequal, fleshy, 
hollow, smooth, glabrous, yellowish, 4-6 cm. long, about 5 mm. thick. 
Type collected in humus in a dense redwood forest at La Honda, near Palo Alto, California, 
November 25, 1911, W. A. Murvill & L. R. Abrams 1247 (herb. N. Y. Bot. Gard.). 
Hasirat: On the ground in coniferous forests. 
Distrisution: Washington, Oregon, and California. 
62. Clitocybe washingtonensis Murrill, Mycologia 5: 214. 1913. 
Pileus fleshy, convex to plane or very slightly depressed, usually gibbous, gregarious, 
reaching 5-6 cm. broad; surface white, smooth, glabrous, dry, somewhat shining, margin entire, 
concolorous: lamellae decurrent, distant, rather narrow, white to slightly discolored: spores 
subglobose to ellipsoid, smooth, hyaline, 6-7 X 3-4 u: stipe subequal, fleshy, solid or stuffed, 
smooth, glabrous, whitish-mycelioid at the base, 3.5-5 cm. long, 5-8 mm. thick. 
TYPE LOcAaLITy: Seattle, Washington. 
Hasrrat: In humus in woods. 
DisTRIBUTION: Known only from the type locality. 
63. Clitocybe variabilis Murrill, Mycologia 5: 213. 1913. 
Pileus fleshy but rather thin, plane or slightly depressed, rarely umbonate when young, 
gregarious, reaching 6 cm. broad; surface dry, smooth, glabrous, white, margin thin, usually 
entire, concolorous: lamellae narrow, usually more or less crowded, decurrent, white: spores 
