Part 2, 1917] AGARICACEAE 121 
to the small, conic umbo, avellaneous-isabelline, margin concolorous, conspicuously striate, 
upturned and irregular with age; context very thin, dull-whitish, decidedly farinaceous in 
taste but without odor; lamellae deeply sinuate, almost free, very broad, ventricose, rather 
distant, pallid to rose-colored; spores subglobose to broadly ellipsoid, decidedly angular, 
apiculate, uniguttulate, rose-colored, 8-10 X 7 4; stipe equal or slightly enlarged at the base, 
smooth, glabrous, concolorous, solid, 4 cm. long, 5 mm. thick. 
Type collected in wet loam among weeds under willows by the Bronx River in the New York 
Botanical Garden, August 7, 1915, W. A. Murrill (herb. N. Y. Bot. Gard.). 
DistRIBUTION: Known only from the type locality. 
40. Entoloma indigoferum (Ellis) Sacc. Syll. Fung. 5: 688. 1887. 
Agaricus indigoferus Ellis, Bull. Torrey Club 6: 75. 1876. 
Pileus convex-plane, gregarious or subcespitose, 7.5-10 cm. broad; surface rivulose, 
indigo-blue, at length fading more or less; context white, very thin toward the margin; 
lamellae hardly crowded, sinuate-emarginate, white, becoming flesh-colored, at length be- 
coming ventricose and separating from the stipe; spores dull-flesh-colored, very irregular, 
10 u; stipe solid, brittle, fibrillose, white, more or less tinged with blue, 5-7.5 cm. long, 6-12 
mm. thick. 
TYPE Locality: Newfield, New Jersey. 
Hapirat: Among mosses in swamps. 
DISTRIBUTION: New Jersey. 
41. Entoloma viridans Lovejoy, Bot. Gaz. 50: 385. 1910. 
Pileus fleshy, broadly convex, 3.5-5.5 cm. broad; surface hygrophanous when moist, 
silky-shining when dry, gray, the margin tinged with rose-pink and the disk becoming dull- 
green, or the coloring may be reversed, the disk rose-pink and the margin a dull-green, margin 
deflexed, entire, smooth; context white, becoming dull when dry; lamellae all even, light- 
pinkish-yellow, becoming salmon-pink, 2 mm. broad, slightly sinuate, adnate, then separating, 
the interspaces venose; spores coarsely warted, pink, 10 X 7 yu; stipe fleshy, white, pruinose, 
hollow, cylindric, quite bulbous at the base, attenuate upward, 4.5 cm. long, 1.5 em. thick. 
TyPE LOCALITY: Brooklyn Lake, Wyoming. 
Hasitat: In damp humus. . 
DIstRiBUTION: Known only from the type locality. 
42. Entoloma rubribrunneum Murrill, sp. nov. 
Pileus fleshy, brittle when dry, convex, 3-4 cm. broad; surface glabrous, shining, often 
cracking when dry, reddish-brown, margin even or faintly striate; context white; lamellae 
adnate or subsinuate, subdistant, broad, whitish, becoming pink; spores subglobose, angular, 
pink, 8 X 7; stipe short, cylindric or slightly tapering downward, glabrous, white, hollow, 
2-4 cm. long, 4-8 mm. thick. 
Type collected in oak woods at Opelika, Alabama, September 7, 1899, F. S. Earle (herb. N. Y. 
Bot. Gard.). ete 
DistrRiBsution: Alabama and Mississippi. 
43, Entoloma pluteiforme Murrill, sp. nov. 
Pileus convex, not fully expanding, umbonate, solitary, 5 cm. broad; surface dry, gla- 
brous, striate, umbrinous-avellaneous, margin concolorous, undulate; lamellae adnexed, rather 
crowded, of medium breadth, entire on the edges, light-pink to salmon-colored; spores ellip- 
soid, angular, uniguttulate, rosé-colored, 10-12 X 7-8 uw; stipe tapering upward from a some- 
what enlarged base, smooth, whitish, glabrous, 5 cm. long, about 5 mm. thick. 
T flected on the ground in woods near the New York Botanical Garden, October 8, 1911, 
WwW. A Murrill & E. C. Volkert (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
44. Entoloma commune Murrill, sp. nov. 
Pileus rather thin, convex, often umbonate, becoming depressed and irregular with age, 
gregarious to subcespitose, 3-5 cm. broad; surface dry, polished, glabrous, avellaneous-um- 
