Tricholoma subannulatum (Peck) Zeller 1922

Melanoleuca subannulata (Peck) Murrill
Armillaria subannulata Peck, Bull. Torrey Club 36: 330. 1909. Melanoleuca califomica Murrill, Mycologia 5: 216. 1913. Tricholoma californicum Murrill, Mycologia 5: 223. 1913.
Pileus convex to subplane, rather thick at the center, gregarious, reaching 15 cm. broad; surface smooth, glabrous, evidently viscid when fresh, bringing up adhering particles of soil, reddish-brown at the center, much paler at the margin, which isj thin, entire and inflexed on drying; context white, rather thick at the center, thinning out toward the margin, slightly bitter to the taste, odor musty; lamellae quite narrow, less than the thickness of the context, sinuate to adnexed, plane, crowded, white, scarcely changing color on drying; spores broadly ellipsoid, smooth, hyaline, 5-7X4-5 /x; stipe very long, subequal, smooth, glabrous, white, solid, 10-15 cm. long, reaching 3 cm. thick.
Type locality: Claremont, California. Habitat: Under oaks or in cultivated fields. Distribution: California and Nevada.