90 NORTH AMERICAN FLORA [VoLUME 10 
15. Leptoniella subplacida Murrill, sp. nov. 
Pileus convex to expanded, becoming depressed at the center, rather thick and firm, 
gregarious, 4-5 cm. broad; surface dry, grayish-yellowish-brown, somewhat shining, striate, 
squamulose, margin entire, concolorous, incurved; context with somewhat nutty taste; lamellae 
adnate or sinuate, distant, rather broad, almost white, becoming salmon-colored, entire and 
concolorous on the edges; spores very irregular, broadly ellipsoid, apiculate, angular, uni- 
guttulate, rose-colored, 10-12.5 X 74; stipe rather thick, equal, hollow, smooth, glabrous, 
murinous to plumbeous, darker than the pileus, 4-5 cm. long, 5—6 mm. thick. 
Type collected on decaying wood or rich leaf-mold in woods at Bar Harbor, Maine, July 22, 
1901, V. S. White 47 (herb. N. Y. Bot. Gard.). 
DIstRIBUTION: Vicinity of Bar Harbor, Maine. 
16. Leptoniella Earlei Murrill, sp. nov. 
Pileus large, rather thin, becoming depressed, solitary, 4 cm. broad; surface pale-grayish- 
brown, squamulose on the disk, margin concolorous, upturned with age, not striate; lamellae 
adnexed, inserted, subcrowded, subventricose, rather narrow, white to pale-pink, entire and 
concolorous on the edges; spores broadly ellipsoid, irregular, angular, obliquely apiculate, 
uniguttulate, rose-colored, 12-14 X 8-10 u; stipe equal, rather thick, subconcolorous, glabrous, 
hollow, whitish-mycelioid at the base, 8 cm. long, 4 mm. thick. 
Type collected among humus at the edge of a swamp at West Park, New York, August 3, 1903, 
F.S. Earle 1634 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
17. Leptoniella glabra Murrill, sp. nov. 
Pileus very thin, convex to plane, not umbonate, solitary, 2 em. broad; surface smooth, 
glabrous, not viscid, uniformly dull-avellaneous, striate, with a satiny luster, margin entire, 
concolorous, incurved; context exceedingly thin; lamellae adnexed, narrow, ventricose, in- 
serted, subdistant, entire on the edges, grayish-white to salmon-colored; spores subglobose, 
angular, apiculate, uniguttulate, rose-colored, 6-8 4; stipe slightly eccentric, slender, equal, 
smooth, glabrous, grayish-white, 2-3 cm. long, 1 mm. thick. 
Type collected on dead wood at Camp Sebec, on the north shore of Sebec Lake, Piscataquis 
County, Maine, September 16, 17, 1905, W. A. Murrill (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
18. Leptoniella undulatella (Peck) Murrill. 
Agaricus undulatellus Peck, Ann. Rep. N. Y. State Mus. 31: 33. 1879. 
Lepionia undulatella Sacc. Syll. Fung. 5: 708. 1887. 
Pileus membranous, convex, 1.2-2.5 em. broad; surface minutely scurfy, squamulose on 
the disk, hygrophanous, grayish-brown and striatulate when moist, wavy on the margin; 
lamellae rounded behind, nearly free, subdistant, whitish, becoming tinged with flesh-color; 
spores irregular, 10 X 7.5 u; stipe slender, glabrous, concolorous, usually curved, about 2.5 cm. 
long. 
Type Locality: Pine Hill, New York. 
Hasirat: On decaying prostrate trunks of trees. 
DIsTRIBuTION: Known only from the type locality. 
19, Leptoniella alabamensis Murrill, sp. nov. 
Pileus small, convex, gregarious, 1—1.5 em. broad; surface dry, light-brown, covered with 
silky fibrils, margin entire, concolorous; context with mild taste; lamellae adnate, easily 
separating, broad, ventricose, subcrowded, salmon-colored; spores subglobose, irregular, 
angular, obliquely apiculate, uniguttulate, 7-8 u; stipe slender, equal, cartilaginous, solid 
' concolorous, partly clothed with fine, light-colored hairs, mostly glabrous in dried specimens, 
5 em. long, 1-2 mm. thick. . 
Type collected on the ground at Auburn, Alab 1 
(herb. N.Y. Bot Gard). ama, July 3, 1897, F. S. Earle & C. F. Baker 
DIsTRIBUTION: Known only from the type locality. 
