Murrill: Agaricaceae of Pacific Coast 
219 
odor somewhat suggestive of skunk cabbage; lamellae slightly 
sinuate, crowded, narrow, white, discolored on drying; spores 
globose, smooth, hyaline, 4-6/4; stipe cylindric, solid, fleshy, 
white or pale-avellaneous, 5-8 cm. long, 1-1.5 cm. thick. 
Type collected in the edge of woods on the border of a lake 
near Tacoma, Washington, October 26, 1911, IV. A. Murrill 752. 
Seventy-seven plants of this species were found growing there in 
a perfect circle thirty feet in diameter. 
Melanoleuca pinicola sp. nov. 
Pileus rather thin, convex, umbonate, becoming nearly plane, 
gregarious, reaching 5 cm. broad ; surface smooth, glabrous, sub- 
shining, dry or slightly moist, milk-white, margin entire, con- 
colorous, strongly indexed on drying; lamellae sinuate, not 
crowded, rather broad, plane or slightly ventricose, white or 
slightly discolored; spores ellipsoid, smooth, hyaline, 5-6 X 3-4^1 
stipe slightly tapering upward, fleshy, solid or stuffed, milk-white, 
smooth, glabrous, whitish-mycelioid at the base, 5-7 cm. long, 4-9 
mm. thick. 
Type collected on much decayed, coniferous wood near Ta- 
coma, Washington, October 20-November i, 1911, IV. A. Murrill 
730. 
Melanoleuca platyphylla sp. nov. 
Pileus convex to slightly depressed, rather thick, solitary, 3.5 
cm. broad ; surface smooth, subglabrous, white with a cremeous 
tint, margin entire, concolorous ; lamellae white, subdistant, ven- 
tricose, very broad; spores ellipsoid, smooth, hyaline, granular, 
8.5 X 6/4; stipe tapering upward from a swollen base, pure-white, 
smooth, glabrous, 8 cm. long, 5-9 mm. thick. 
Type collected in humus in woods near Seattle, Washington, 
October 20-November i, 1911, W. A. Murrill ^ip. 
Melanoleuca portolensis sp. nov. 
Pileus rather thick, convex with a prominent umbo, becoming 
nearly plane, scattered, 6-1 1 cm. broad; surface smooth, moist, 
glabrous, brownish-gray, darker toward the center, margin entire, 
concolorous ; context white, with a slightly nutty taste but without 
characteristic odor; lamellae rather narrow, slightly sinuate, 
plane, several times inserted, crowded, white ; spores ovotd 
