Ampulloclitocybe avellaneialba (Murrill) Harmaja 2003

Clitocybe avellaneialba Murrill, Mycologia 5: 207. 1913
Pileus large, thin, slightly umbonate, becoming infundibuliform, gregarious to cespitose, reaching 10 cm. or more broad; surface hygrophanous, avellaneous to dark-fuliginous, subzonate, innate-radiate-fibrillose, hispid-fibrillose at the center, margin entire, concolorous: context thin, white, of mild flavor; lamellae shortdecurrent, rather crowded and narrow, white: spores ellipsoid, pointed at both ends, smooth, hyaline, 7-8 X 5 m: stipe tapering upward, whitish-mycelioid at the base, avellaneous, finely fibrillose to glabrous, solid or hollow with a tough rind, reaching 10 cm. or more long and 1 cm. thick.
Type locality: Seattle, Washington.
Habitat: In humus on the ground in woods or among leaves and sticks under redwoods.
Distribution: Washington and California.