Part 2, 1917] AGARICACEAE 131 
15. Pluteus atriavellaneus Murrill, sp. nov. 
Pileus small, convex to expanded, not umbonate, regular, solitary, 1-2 cm. broad; surface 
hygrophanous, finely pubescent to glabrous, not rugose, uniformly fuliginous when young, 
becoming avellaneous with age, margin entire, concolorous, striate; lamellae free, broad, 
ventricose, subcrowded, white to salmon-colored, entire and whitish on the edges; spores 
subglobose, smooth, rose-colored, 7-8 yz; stipe slender, equal, smooth, glabrous, pallid, 3 em. 
long, 1-2 mm. thick. 
Type collected in humus in mixed woods at Unaka Springs, Tennessee, August 18-24, 1904, 
W.A. Murvill 673 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
16. Pluteus eximius (Peck) Murrill. 
Agaricus eximius Peck, Ann. Rep. N. ¥. State Mus. 24: 70. 1872. 
Pilosace eximia Sacc. Syll. Fung. 5: 1012. 1887. 
Pileus fleshy, thin, convex or broadly campanulate, at length expanded and subum- 
bonate, 6~12 mm. broad; surface smooth, dark-sooty-brown; lamellae crowded, broad, ventri- 
cose, rounded behind, free, dull-red or brownish-pink, becoming brown; spores ellipsoid, 
reddish, 6 X 4; stipe slender, hollow, dull-red, slightly thickened at the base, 2.5 cm. long; 
1 mm. thick. 
TYPE LOCALITY: Greig, New York. 
Hasirat: On oid stumps in woods. 
DISTRIBUTION: New York. 
17. Pluteus longistriatus (Peck) Sacc. Syll. Fung. 5: 670. 1887. 
Agaricus longisiriatus Peck, Ann. Rep. N. Y. State Mus. 30: 40. 1878. 
Pileus thin, convex or expanded, not umbonate, 2.5-4 em. broad; surface dry, cinereous 
or whitish, striate to the disk, which is usually darker than the margin and minutely squamu- 
lose or hairy; lamellae broad, ventricose, white, becoming salmon-colored; spores globose, 
smooth, 5-7 4; stipe equal, glabrous, white, about 5 cm. long and 2 mm. thick, sometimes 
reaching 4 mm. 
Typx Locatity: Albany, New York. 
Hastrat: On decaying wood. . 
DistRIBUTION: New York to Alabama and west to Ohio. 
18. Pluteus pallidicervinus Murrill, sp. nov. 
Pileus convex to expanded, not umbonate, regular, gregarious, 5 cm. broad; surface 
smooth, finely tomentose, at least under a lens, pale-isabelline, dark-isabelline or fulvous on 
the disk, margin entire, concolorous, not striate; lamellae free, broad, ventricose, crowded, 
white to salmon-colored; spores subglobose, smooth, rose-colored, 7 »; stipe cylindric, equal, 
smooth, glabrous, concolorous, solid, 7 cm. long, 5 mm. thick. 
Type collected on rotten wood at West Park, New York, August 3, 1903, F. S. Earle 1643 (herb. 
N. Y. Bot. Gard.). : . 
DIsTRIBUTION: Known only from the type locality. 
19. Pluteus campanulatus Murrill, sp. nov. 
Pileus very thin, delicate, subtranslucent, campanulate, obtuse, 3 cm. broad; surface 
glabrous, pale-pinkish-fawn-colored, margin striate to the disk; lamellae free, crowded, narrow, 
watery-white to pink; spores globose, reddish-pink, 5 u; stipe slightly tapering upward, gla- 
brous, pallid or whitish, hollow, the base discoid and attached by a mat of mycelium, 3-5 cm. 
long, 2-3 mm. thick. 
Type collected oa rotten wood in wet woods at Redding, Connecticut, July, 1902, L. M. Under- 
wood & F. S. Earle 655 (herb. N. ¥. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
20. Pluteus brunneidiscus Murrill, sp. nov. 
Pileus rather thin, convex to expanded, not umbonate, solitary, 3.5 em. broad; surface 
smooth, glabrous, pinkish-fawn-colored, dark-brown on the disk, margin entire, pallid, faintly 
