Part 1, 1914] AGARICACBAB 27 



96. Melanoleuca bicolor Murrill, Mycologia 5: 215. 1913. 



Tricholoma bicolor Murrill, Mycologia 5: 223. 1913. 



Pileus very firm, convex to nearly plane, somewhat gibbous, about 6-12 cm. broad; surface 

 dry, smooth, glabrous, avellaneous with a rosy tint, margin concolorous or slightly paler, often 

 splitting; lamellae broad, rather close, emarginate with a slight decurrent tooth, firm, drying 

 readily, white; spores subglobose, smooth, hyaline, 6-7 fi; stipe equal or somewhat enlarged 

 below, white, smooth, minutely tomentose to glabrous, solid, 5-6 cm. long, about 1 cm. thick. 



Type locality: Glen Brook, Oregon. 



Habitat: In humus in woods, and on the ground under an oak. 



Distribution: Oregon and California. 



97. Melanoleuca roseibrunnea Murrill, Mycologia 5: 220. 1913. 



Tricholoma roseibrunneum Murrill, Mycologia 5: 223. 1913. 



Pileus convex to somewhat depressed, gregarious, reaching 8-10 cm . broad ; surface smooth, 

 dry, glabrous, brownish-pink with browner circular spots, margin paler with a cremeous tint, 

 somewhat irregular and often upturned with age; context white, odor farinaceous, taste fari- 

 naceous with a faint bitter flavor which gradually becomes stronger, eaten by slugs; lamellae 

 sinuate with a decurrent tooth, close, several times inserted, white ; spores subglobose to ovoid, 

 smooth, hyaline, 5-7X4—5 y,; stipe cylindric, equal or at times enlarged at the base, smooth, 

 finely tomentose to subglabrous, white or whitish, solid, 6-8 cm. long, 1—1.5 cm. thick, usually 

 thicker at the base. 



Typce locality: Seattle, Washington. 

 Habitat: Among humus on the ground in woods. 

 Distribution: Washington, Oregon, and California. 



98. Melanoleuca nuciolens Murrill, Mycologia 5: 218. 1913. 



Tricholoma nuciolens Murrill, Mycologia 5: 223. 1913. 



Pileus convex to nearly plane, often becoming depressed and irregular with age, gregarious, 

 subcespitose, reaching 6 cm. broad; surface glabrous, rather uneven, hygrophanous, pale-rosy- 

 isabelline, margin concolorous, undulate to conspicuously lobed and upturned with age; context 

 white, thin, having the odor of walnuts in dried specimens ; lamellae sinuate varying to adnate, 

 narrow, arcuate, rather distant, pale-rosy-isabelline, becoming slightly purplish-spotted when 

 bruised or on drying; spores ellipsoid, smooth, hyaline, 6 X3.5 m; stipe equal or slightly tapering 

 upward, sometimes distorted in old specimens, smooth, glabrous, pallid, hollow, almost car- 

 tilaginous, about 5-6 cm. long, 1-1.5 cm. thick. 



Type locality: Seattle, Washington. 



Habitat: In sandy soil in woods. 



Distribution: Known only from the type locality. 



99. Melanoleuca subvelata Murrill, Mycologia 5 : 222. 1913. 



Tricholoma subvelalum Murrill, Mycologia 5: 223. 1913. 



Pileus convex-conic when young, not fully expanding, loosely clustered, 3-5 cm. broad; 

 surface smooth, glabrous, moist but not viscid, latericious, leaving a stain on paper, margin 

 entire, strongly inflexed, concolorous or somewhat paler; lamellae sinuate- adnate to adnexed, 

 not crowded, broad, ventricose, pallid; spores ovoid, smooth, hyaline, uninucleate, 5-7X2.5- 

 4.5 m; stipe subequal to slightly ventricose, rosy, smooth and glabrous at the apex, fibrillose- 

 shaggy near the center, fleshy, solid, 7 cm. long, about 1 cm. thick; veil scanty, fibrillose, rosy, 

 evanescent, persisting as fibrils on the margin and stipe. 



Type locality: Seattle, Washington.^ 

 Habitat: Among humus under a log in woods. 

 Distribution: Known only from the type locality. 



100. Melanoleuca collybiiformis. Murrill, Mycologia 5 : 216. 1913. 



Tricholoma collybiiforme Murrill, Mycologia 5: 223. 1913. 



Pileus broad, thin, convex to plane, drying easily like species of Collybia, gibbous, reaching 

 10 cm broad: surface dry, smooth, glabrous, fulvous at the center, pale-fulvous near the entire, 



