Melanoleuca yatesii Murrill 1914

Melanoleuca yatesii Murrill, sp. nov
Pileus regular, convex, solitary, 5-8 cm. broad; surface smooth, glabrous, viscid, sulfuryellow, becoming brownish at the center on drying, margin concolorous, entire, incurved on drying; context rather thin, white to pale-yellow; lamellae sinuateadnexed, rather broad, ventricose, not crowded, apparently pale-yellow when fresh, somewhat discolored on drying; spores ellipsoid, smooth, hyaline, 5X3 fx) stipe equal, shining, subglabrous, sulfur-yellow, becoming nearly white when dry, 6-10 cm. long, 8-12 mm. thick.
Type collected under Monterey cypress and eucalyptus trees on the campus of the University of California at Berkeley, California, January 24, 1913, H. S. Yates 8.
Distribution: Known only from the type locality.