106 NORTH AMERICAN FLORA [VorumE 10 
light-cinnamon-colored; spores irregularly ellipsoid, pale-rosy, 8-10 X 4-5 y; stipe short, solid, 
glabrous, white, thickened toward both ends, 1.5-2.5 cm. long, 2 mm. thick. 
TYPE LOCALITY: Bellevue, Nebraska. 
Hasirtat: On fallen leaves. . 
DistTRIBUTION: Known only from the type locality. 
12. Pleuropus albogriseus (Peck) Murrill. 
Agaricus albogriseus Peck, Ann. Rep. N. Y. State Mus. 31: 33. 1879. 
Clitopilus albogriseus Sacc. Syll. Fung. 5: 703. 1887. 
Pileus firm, convex or slightly depressed at the center, 1.2-2.5 em. broad; surface smooth, 
pale-gray; context having a farinaceous odor; lamellae moderately crowded, adnate or slightly 
decurrent, grayish, becoming flesh-colored; spores angular, irregular, 10-12.5 X 7.5 w; stipe 
solid, concolorous, 2.5-7 cm. long, 2-4 mm. thick. 
TYPE Locauiry: Adirondack Mountains, New York. 
Hasrrat: On the ground in woods. 
DISTRIBUTION: New York and Massachusetts. 
13. Pleuropus subcinereus Murrill, sp. nov. 
Pileus thin, convex, deeply umbilicate, gregarious or subcespitose, 2-3 cm. broad; surface 
dry, smooth, minutely fibrillose, uniformly pale-cinereous, margin entire, concolorous, not 
striate, inflexed; context with mild taste; lamellae long-decurrent, arcuate, distant, white to 
dirty-pink, entire and concolorous on the edges; spores ellipsoid, angular, obliquely apiculate, 
uniguttulate, rose-colored, 8-10 X 5-7 »; stipe often compressed, equal, smooth, subglabrous, 
concolorous, 2.5—4 em. long, 2-4 mm. thick. 
Type collected in soil at Redding, Connecticut, August 26, 1902, F. S. Earle 1235 (herb. N. Y. 
Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
14, Pleuropus cinereicolor Murrill, sp. nov. 
Pileus rather thin, regular, convex to expanded, depressed or slightly umbilicate, solitary, 
4 cm. broad; surface smooth, subglabrous, uniformly pale-cinereous, margin entire, con- 
colorous, not striate, inflexed; lamellae short-decurrent, crowded, narrow, pallid to salmon- 
colored; spores angular, rose-colored, 8-9 X 7 yw; stipe cylindric, equal, smooth, glabrous, con- 
colorous, hollow, 5 cm. long, 5 mm. thick. 
Type collected on the ground in moist mixed woods at West Park, New York, August 8, 1903, 
F.S. Earle 1808 (herb. N. ¥. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
15. Pleuropus murinus Murrill, sp. nov. 
Pileus small, rather thin, convex to expanded, abruptly and deeply umbilicate, regular 
in shape, gregarious, about 2 cm. broad; surface smooth, dry, pubescent or finely scabrous, 
uniformly mouse-colored; lamellae short-decurrent, of medium breadth, crowded, pallid to 
salmon-colored, entire and concolorous on the edges; spores ellipsoid, angular, rose-colored, 
obliquely apiculate, uniguttulate, 8 X 5 4; stipe short, fleshy, subequal, smooth, hoary, solid, 
about 1.5 cm. long, 2-3 mm. thick. 
Type collected in moist soil among mosses, in deciduous woods at Blacksbur, » Virginia, Jul: 
27-August 3, 1904, W. A. Murrill 428 (herb. N. Y. Bot. Gard.). fo emerge! 
DisTRIBUTION: Known only from the type locality. 
16. Pleuropus washingtoniensis (Braendle) Murrill. 
Clitopilus washingtoniensis Braendle; Peck, Bull. N. Y. State Mus. 150: 52. 1911. 
Pileus thin, broadly convex, nearly plane or centrally depressed, gregarious or cespitose, 
1.6-2.5 cm. broad; surface glabrous, at first bluish, soon pale-purple or mauve, margin undu- 
late; context white, the taste mild; lamellae narrow, crowded, decurrent, slightly tinged with 
pink; spores ellipsoid, 6-7 X 4-5 y; stipe short, central, eccentric, or almost lateral, equal or 
aay oe fibrillose and longitudinally rimulose, solid, brownish, 1-2 cm. long, 2—4 
mm. thick. 
TYPE LOCALITY: Stanley Court, Washington, D. C. 
Hasirat: On lawns. 
DistRiBuTIon: Known only from the type locality. 
