28 NORTH AMERICAN FLORA [Volume; 10 



smooth margin; lamellae rather crowded, white, sinuate, the edges undulate or somewhat 

 notched; spores globose or subglobose, smooth, hyaline, about 3.5 /it; stipe eccentric, bulbous, 

 rather broad, fleshy, hollow, white, radicate, 6 cm. long, 1-2 cm. thick. 



Type locality: Seattle, Washington. 



Habitat: In humus in woods. 



Distribution: Known only from the type locality. 



101. Melanoleuca Harperi Murrill, Mycologia 5: 217. 1913. 



Tricholoma Harperi Murrill, Mycologia 5: 223. 1913. 



Pileus broad, rather thin, becoming plane or depressed, gregarious or growing in circles, 

 reaching 10-15 cm. broad; surface umbrinous, hygrophanous, not viscid, smooth, glabrous, 

 margin entire or slightly lobed, concolorous; lamellae sinuate, white, not spotted, crowded, 

 rather broad, ventricose, usually separating from the stipe with age; spores broadly ellipsoid, 

 smooth, hyaline, 7-8X4 m," stipe very short and thick, bulbous, solid, smooth, glabrous, white, 

 about 3-4 cm. long and 2-3.5 cm. thick. 



Type locality: Berkeley, California. 

 Habitat: In rich soil. 

 Distribution : California. 



102. Melanoleuca striatella Murrill, Mycologia 5: 221. 1913. 



Tricholoma striatellum Murrill, Mycologia 5: 223. 1913. 



Pileus convex and gibbous when young, becoming depressed with age, firm, fleshy, scat- 

 tered, 5-7.5 cm. broad; surface smooth, subglabrous, pale-mouse-gray, very minutely striate 

 except at the center, margin quite thick, entire, concolorous ; context grayish- white with farina* 

 ceous taste, quite thick at the center but very thin toward the margin; lamellae sinuate to 

 adnexed, broad, plane or ventricose, close, white; spores globose, smooth, hyaline, 5-7 /*; stipe 

 cylindric or slightly compressed, equal, longitudinally striate, whitish, solid, 3-6 cm. long, 

 1-2 cm. thick. 



Type locality: Stanford University, California. 

 Habitat: On the ground under live oaks. 

 Distribution : Known only from the type locality. 



103. Melanoleuca subcinereiformis Murrill, sp. nov. 



Pileus convex to nearly plane, with a small rounded umbo, solitary, reaching 5 cm. broad; 

 surface smooth, finely pruinose, smoky-avellaneous, slightly darker on the umbo, margin entire, 

 straight, white; context thin, white, without characteristic odor or taste; lamellae adnexed, 

 nearly free, slightly ventricose, crowded, of medium breadth, white; spores ellipsoid, smooth, 

 hyaline, uninucleate, 7-8.5 X4-5 ^; stipe slender, equal, hollow, with rather tough rind, pruinose, 

 white, with a faint dirty-yellowish' tint, about 5 cm. long and 6 mm. thick. 



Type collected on the ground among decaying leaves and twigs in mixed woods near Corvallis, 

 Oregon, November 6-11, 1911, W. A. Murrill 901. 



Distribution: Known only from the type locality. 



104. Melanoleuca avellanea Murrill, Mycologia 5: 215. 1913. 



Tricholoma avellaneum Murrill, Mycologia 5: 223. 1913. 



Pileus convex, becoming plane, thick, fleshy, solitary, reaching 8 cm. broad; surface dry, 

 smooth, glabrous, avellaneous, margin entire, concolorous, inflexed on drying; lamellae slightly 

 sinuate varying to adnate, close, narrow, arcuate, pure- white changing to yellowish on drying; 

 spores ellipsoid, smooth, hyaline, about 6X3 ju; stipe much enlarged at the base, rather short, 

 fleshy, solid, white, smooth, slightly scabrous above, about 7 cm. long and 2 cm. thick, reaching. 

 4 cm. thick at the base. 



Type locality: Seattle, Washington. 



Habitat: In sandy soil mixed with humus in woods and on decayed wood. 



Distribution: Known only from the type locality. 



105. Melanoleuca fumosella Murrill, sp. nov. 



Pileus convex to depressed and somewhat irregular, scattered, 5.5-8 cm. broad; surface 

 smooth, dry, opaque, pale-smoky, darker with age, margin paler at times, often lobed; context 



