124 NORTH AMERICAN FLORA [VorumE 10 
the odor and taste farinaceous; lamellae adnate or slightly sinuate, subdistant, ventricose, 
white to rosy, the edges undulate; spores subglobose, angular, rose-colored, 7-9 #; stipe equal 
or tapering downward, shining-white, longitudinally striate, glabrous, solid, white within, 
6-10 cm. long, 1 cm. thick. 
Tyre LocaLiry: Sandlake, New York. 
Hasrrat: On the ground. 
DistRIBurion: Maine to Alabama in the eastern United States. 
InLustrations: Atk. Stud. Am. Fungi ed. 1. f. 137; ed. 2. f. 140; Bull. N. Y. State Mus. 157: 
bl. 126; Mycologia 5: pl. 92, f. 4. 
Exsiccati: Shear, N. Y. Fungi 301. 
54. Entoloma sericiceps Murrill. 
Agaricus sericeus Bull. Herb. Fr. pl. 413, f. 2. 1788. Not A. sericeus Schaeff. 1774. 
Entoloma sericeum Quél. Champ. Jura Vosg. 86. 1872. 
Pileus fleshy but thin, convex, becoming nearly plane, sometimes minutely umbilicate, 
3-5 em. broad; surface glabrous, hygrophanous, brownish when moist, paler, silky, and shining 
when dry, margin striate, incurved; context having a farinaceous odor and taste; lamellae 
rather broad, subdistant, adnexed, grayish, becoming salmon-colored; spores subglobose, 
angular, 7.5-10 X 6—-7.5 uw; stipe short, equal, hollow, fibrillose, concolorous or paler, 2.5-5 
em. long, 2-4 mm. thick. 
TyPE LOCALITY: Europe. 
Hasitat: In woods and pastures. 
E DisTRIBUTION: Canada to North Carolina and west to Washington and California; also in 
urope. 
ILLUSTRATIONS: Bull. Herb. Fr. pl. 413, f. 2; Cooke, Brit. Fungi i. 3206 (340); Gill. Champ. Fr. 
pl. 264 (276); Ricken, Blatterp. Deutschl. pl. 72, f. 5. 
55. Entoloma fumosonigrum Peck, Bull. N. Y. State Mus. 167: 42. 
1913. 
Pileus fleshy, thin, convex or nearly plane, 3-5 cm. broad; surface dry, subglabrous, smoky- 
black, margin involute; context white, the taste disagreeable; lamellae moderately crowded, 
sinuate-adnate, eroded on the edges, at first white, becoming pale-pink; spores subglobose, 
slightly angular, uninucleate, often with an oblique apiculus at one end, 8-10» long; stipe 
slender, equal or slightly tapering upward, stuffed, glabrous or fibrillose, pruinose at the apex, 
concolorous or a little paler, with a white, mycelicid tomentum at the base, sometimes entirely 
white, 4-5 cm. long, 2-4 mm. thick. 
Type LocaLity: Stow, Massachusetts. 
Hasrrat: Under trees in swamps. 
DistTRIBUTION: Known only from the type locality. 
56. Entoloma nigricans Peck, Bull. Torrey Club 29: 72. 1902. 
Pileus thin, convex, becoming irregularly expanded and centrally depressed, 3-4 cm. 
broad; surface innately silky-fibrillose, shining, dark-gray or blackish, the cuticle often radi- 
ately cracking, margin somewhat striate or sulcate in dried specimens; lamellae broad, sub- 
distant, sinuate, adnate, salmon-colored; spores salmon-colored, angular, uninucleate, 8-12 » 
long, nearly as broad; stipe equal, silky-fibrillose, at first solid, becoming hollow, shining, 
white streaked with black, sometimes scurfy at the apex, 2.5-5 cm. long, 4-8 mm. thick. 
Type Locauity: St. Louis, Missouri. 
Hasitat: In low ground in woods. 
DISTRIBUTION: Known only from the type locality. 
57. Entoloma subjubatum Murrill, sp. nov. 
Pileus convex to expanded, usually somewhat umbonate, becoming quite irregular with 
age, gregarious, 5-7 cm. broad; surface dry, imbricate-squamulose, especially at the center, 
fuliginous when young, usually fading to avellaneous with age, the disk remaining darker, 
margin pallid, usually lobed or cracked in older specimens; context thin, white, without odor, 
but with a pleasant, nutty-farinaceous taste; lamellae deeply sinuate, broad, ventricose, not 
crowded, salmon-colored, dark-isabelline in dried specimens; spores ellipsoid, angular, 8-9 X 
