348 NORTH AMERICAN FLORA VOLUME 9 
slightly grayish in herbarium specimens: spores ellipsoid, smooth, hyaline, 6-7 X 4-5 m: stipe 
cylindric, smooth, glabrous, concolorous, solid, 4-5 cm. long, 3-4 mm. thick. 
Type collected in humus under redwoods at Searsville Lake, near Stanford University, Cali- 
fornia, January 6, 1903, James McMurphy 37 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
15. Omphalina luteicolor Murrill, sp. nov. 
Pileus convex to depressed, gregarious to subcespitose, usually about 2 cm. broad, but 
sometimes reaching 4 cm.; surface smooth, glabrous, dry or moist, varying from pale-luteous to 
almost orange, margin not striate, entire, concolorous, incurved when young and clothed with 
minute white hairs, which disappear with age: lamellae short-decurrent, very distant, rather 
narrow, inserted, pale-luteous: spores oblong-ellipsoid, smooth, hyaline, 7-8.5 X 5-6 uw: stipe 
cylindric, equal, glabrous at the apex, whitish-myceloid at the base, pale-luteous, cartilaginous, 
hollow, 2-3 cm. long, usually about 3 mm. thick, but sometimes reaching 5 mm. 
Type collected on a moss-covered coniferous log in a moist virgin forest near Seattle, Washington, 
October 20-November 1, 1911, W. A. Murrill 685 (herb. N. Y. Bot. Gard.). 
Hasitat: Abundant on the top of moss-covered or burnt coniferous logs. 
DISTRIBUTION: Vicinity of Seattle, Washington. 
16. Omphalina hypobrunnea Murrill, sp. nov. 
Pileus convex to plane, umbonate at times, rather firm, solitary or gregarious, 1.5~2 cm. 
broad; surface smooth, glabrous, hygrophanous, avellaneous, dark-avellaneous on the disk: 
lamellae short-decurrent, rather broad, crowded, whitish with brown edges, becoming cas- 
taneous-umbrinous on drying: spores ellipsoid, smooth, hyaline, 6-7 X 3.5-5 uw: stipe tough, 
hygrophanous, stubcylindric, smooth, finely tomentose to glabrous, concolorous, 1.5 cm. long, 
1.5—-2 mm. thick. 
Type collected on dead wood in a moist virgin forest near Seattle, Washington, October 20— 
November 1, 1911, W. A. Murrill 287 (herb. N. Y. Bot. Gard.). 
DisTRIBUTION: Known only from the type locality. 
17. Omphalina niveicolor Murrill, sp. nov. 
Pileus convex to nearly plane, gregarious, 3-5 mm. broad, rarely reaching 8 mm.; surface 
snow-white, smooth, glabrous, margin incurved when young, concolorous: lamellae decurrent, 
distant, narrow, forked, snow-white, becoming slightly rose-tinted with age, the edges rather 
obtuse when young but thin at maturity: stipe snow-white, smooth, glabrous, very slender, 
6 mm. long. . 
Type collected on a wet log in a moist virgin forest along the Tepeite River, 2300 m. elevation, 
near Cuernavaca, Mexico, December 28, 1909, W. A. & Edna L. Murrill 486 (herb. N. Y. Bot. Gard.). 
Distripution: Known only from the type locality. 
18. Omphalina subscyphoides Murrill, sp. nov. 
Pileus convex, depressed at the center, solitary, reaching 13 mm. broad; surface dull- 
white, smooth, glabrous, margin irregular, concolorous: lamellae decurrent, white, distant, 
rather broad: stipe dilated above, smooth, glabrous, white, 2 cm. long, 2 mm. thick. 
Type collected on the ground in a moist virgin forest along the Tepeite River, 2100 m. elevation, 
near Cuernavaca, Mexico, December 28, 1909, W. A. & Edna L. Murrill 482 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
19. Omphalina tepeitensis Murrill, sp. nov. 
Pileus hemispheric, solitary, 8 mm. broad; surface smooth, glabrous, white, hygrophanous, 
not viscid, margin incurved, concolorous: lamellae decurrent, white, distant, rather broad: 
stipe unusually long, cylindric, equal, smooth, glabrous, snow-white, 4 cm. long, nearly 2 mm. 
thick. 
Type collected on the ground in humus in a moist virgin forest along the Tepeite River, 2100 m. 
Sg ee = Cuernavaca, Mexico, December 28, 1909, W. A. & Edna L. Murrill 479 (herb. N. Y. 
ot. Gard.). 
DistRiBuTION: Known only from the type locality. 
