Part 6, 1916] AGARICACHAE 403 
22. Clitocybe subconnexa Murrill, Mycologia 7: 272. 1915. 
Pileus convex to expanded, rather thin, very tender and fragile, somewhat cespitose, 
reaching 9 cm. broad; surface smooth, dry, glabrous, milk-white; margin very thin, concolorous, 
entire, strongly incurved on drying: context thin, white, fragile, with pleasant odor and taste ; 
lamellae short-decurrent or adnate, narrow, white, exceedingly crowded, several times inserted: 
spores ellipsoid, smooth, hyaline, 5 X 3.5 y: stipe fleshy, subequal, smooth, glabrous, white, 
hollow, 5—7 cm. long, reaching 1.5 cm. thick. 
TYPE LocaLity: New York Botanical Garden. 
HastiratT: In rich soil under deciduous trees. 
DISTRIBUTION: New York Botanical Garden. 
~N 
23. Clitocybe robusta Peck, Ann. Rep. N. Y. State Mus. 49: 17. 
1897. 
Pileus thick, firm, convex becoming plane or slightly depressed at the center, solitary, 
gregarious, or cespitose, 7-10 cm. broad; surface glabrous, white or slightly clouded at the 
center, margin involute or decurved, naked: context white; lamellae crowded, narrow, adnate 
or decurrent, whitish: spores ellipsoid, yellowish, 6-8  4~5 y: stipe stout, solid or hollow, gla- 
brous, equal or tapering upward, white, 2.5-7 em. long, 1.5—2.5 cm. thick. 
TYPE LOCALITY: Catskill Mountains, New York. 
Hasrrat: Among fallen leaves in woods. 
DistTRIBUTION: New York to Maryland and west to Wisconsin. 
24. Clitocybe Overholtsii Murrill, sp. nov. 
Pileus convex to expanded, gregarious, 6-15 cm. broad; surface dry, smooth, glabrous or 
rarely with a bloom, white, becoming grayish with age, margin thin, entire or undulate, white: 
context white, the odor and taste disagreeable; lamellae adnate or slightly decurrent, narrow, 
very much crowded, white or yellowish: spores ellipsoid, smooth, hyaline, 5-6 X 3-3.5 u: 
stipe smooth, glabrous, white, solid or rarely hollow, enlarged and whitish-mycelioid at the 
base, 7-10 cm. long, 1-2 cm. thick. 
Type collected on the ground in a coniferous forest at Tolland, Colorado, 2,700 m. elevation, 
August 5, 1914, L. O. Overholts 2114 (herb. N. Y. Bot. Gard.). 
DistTrIBuTion: Colorado, at high elevations. 
25. Clitocybe submarmorea Murrill, Mycologia 7: 273. 1915. 
Agaricus (Clitocybe) marmoreus Peck, Ann. Rep. N. Y. State Mus. 24:61. 1872. Not A. marmoreus 
Lam. 
Pileus fleshy, firm, broadly convex, cespitose, 5-10 cm. broad; surface glabrous, white, 
mottled with darker watery spots: context white; lamellae crowded, narrow, arcuate, unequally 
decurrent, white: spores globose, 4 w: stipe firm, solid, long, generally curved, slightly thickened 
at the base, white, sometimes pruinose, 10-15 cm. long, 1-2 cm. thick. 
TYPE Locauity: Greig, New York. 
Hasrrar: Prostrate trunks of trees in woods. _ 
DisTRiBuTION: Known only from the type locality. 
26. Clitocybe parvula Murrill, sp. nov. 
Pileus minute, convex to nearly plane, with a very small umbo, scattered, 7 mm. broad; 
surface smooth, glabrous, pale-isabelline, margin entire, concolorous: lamellae adnate with a 
decurrent tooth, plane, broad, distant, white: stipe slender, equal, rather fleshy, smooth, gla- 
brous, hollow, whitish, attached by a mat of white mycelium, 1 cm. long, 1 mm. thick. 
Type collected on the ground in a sugar maple grove at Lake Placid, New York, July 17-29, 
1912, W. A, & Edna L. Murrill 143 (herb. N. ¥. Bot. Gard.). 
DistTRIBUTION: Known only from the type locality. 
