368 NORTH AMERICAN FLORA [VoLuME 9 
lamellae adnate, crowded, rather narrow, white: spores subglobose, smooth, hyaline, 3.5 yu: 
stipe equal, slender, smooth, glabrous, pale-fulvous, cartilaginous, 2.5 cm. long, 1-2 mm. thick, 
with a root 2.5 cm. long, densely covered with mycelium to which a mass of earth clings. 
Type collected in soil in woods at Seattle, Washington, October 20-November 1, 1911, W. A. 
Murrill 439 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Washington. 
61. Gymnopus albogriseus (Peck) Murrill. 
Collybia albogrisea Peck, Bull. Torrey Club 22: 199. 1895. 
Collybia fimicola Earle, Bull. N. Y. Bot. Gard. 3: 298. 1904. 
Pileus fleshy, thin, convex or nearly plane, often cespitose and somewhat irregular, about 
2.5 em. broad; surface glabrous, whitish or grayish: context white; lamellae broad, distant, 
adnate, white or whitish, the interspaces often venose: spores broadly ellipsoid, 5-6 x 4 yn: 
stipe nearly equal, hollow, sometimes twisted, whitish or grayish, the lower part covered with a 
dense, whitish or yellowish tomentum, the upper part naked or merely whitish-pruinose, 
3-5 em. long, 2-4 mm. thick. 
TYPE LOCALITY: Pasadena, California. 
Hasrrat: Among fallen leaves. 
DistaiBurtion: California, 
62. Gymnopus cremeimelleus Murrill, sp. nov. 
Pileus rather small, convex, becoming umbilicate, gregarious, 1.5-2 cm. broad; surface 
smooth, dry, glabrous, cremeous-melleous, margin entire, concolorous, incurved when young: 
lamellae broad, adnate, subdistant, white: spores ellipsoid, smooth, hyaline; 7-8 X 5 p: stipe 
enlarged at the apex, smooth, glabrous, cartilaginous, concolorous at the apex, umbrinous at 
the base, at least when dry, 3-4 cm. long, 1.5 mm. thick. 
‘ Type collected in rich soil in woods near Seattle, Washington, October 20-November 1, 1911, 
W.A. Murriil 497 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Washington. 
63. Gymnopus fulvidiscus Murrill, sp. nov. 
Pileus rather small, somewhat tough, broadly convex, gibbous, solitary, 1.5-2 em. broad; 
surface glabrous, slightly radiate-rugose, somewhat viscid when moist, isabelline, fulvous on 
the umbo, margin entire, concolorous, inflexed when young: lamellae adnexed, attenuate 
behind, comparatively broad in front, crowded, white: spores ellipsoid, pointed at one end, 
smooth, hyaline, 5-6 X 3-4 uw: stipe slender, equal, compressed, becoming twisted on drying, 
cartilaginous, minutely priinose at the apex, pale-reddish-brown, 4 cm. long, 1-2 mm. thick. 
‘Type collected in leaf-mold in a redwood forest at Preston’s Ravine, near Palo Alto, California, 
November 25, 1911, W. A. Murrill & L. R. Abrams 1215 (herb. N. Y. Bot. Gard.). 
DIsTRIBUTION: Known only from the type locality. 
64. Gymnopus denticulatus Murrill, sp. nov. 
Pileus at first convex, soon becoming umbilicate, rather firm and tough, cespitose, 2.5-6 
em. broad; surface smooth, glabrous, striate, dry, avellaneous-isabelline when young, becoming 
isabelline with age: lamellae sinuate, crowded, broad, denticulate on the edges, white: spores 
subglobose, smooth, hyaline, 3.5-4 wu: stipe tough, cylindric, equal, hollow, whitish-pruinose 
to subglabrous, pallid, 4 cm. long, 4 mm. thick. 
Type collected on a decayed mossy trunk in woods near Seattle, Washington, October 20- 
November 1, 1911, W. A. Murrill 621 (herb. N. Y. Bot. Gard.). 
DistRIBUTION: Vicinity of Seattle, Washington. 
65. Gymnopus subrugosus Murrill, sp. nov. 
Pileus rather tough, convex, solitary, 3 em. broad ; surface glabrous, rugose, ochraceous- 
isabelline, margin paler, sterile, incurved when young: lamellae adnate, broad, not crowded, 
white: spores ellipsoid, smooth, hyaline, 6-7 x 3-4 u: stipe cylindric, equal, cartilaginous, 
hollow, smooth, glabrous, pale-bay, 6 em. long, 4 mm. thick. 
ee. in woods at Mill City, Oregon, November 9, 1911, W. A. Murrill 874 (herb. 
DistriputTion: Known only from the type locality, 
