Summary:
Important characters are a white, tomentose to villose cap and the rather large, punctate spores. Other features are small size, white gills that become tinged rusty or brown, a very short or absent stem, and growth on bark of hardwood. The description is derived from Hesler(3).

Cap:
0.5-1.4cm, at first resupinate [lying flat with gills exposed], then reflexed [to form a shelf-like cap], attached dorsally or laterally, fan-shaped or dimidiate, margin even, incurved; white; dry, villose to tomentose

Flesh:
thin, soft; white

Gills:
radiating from off-center or lateral point, medium broad, ventricose, subdistant, many short gills; white at first, finally tinged rusty or "sayal brown" (Ridgway color); edges fimbriate [fringed]

Stem:
none or short "tubercle"

Microscopic spores:
spores 7-11 x 4.5-6 microns, elliptic, very minutely punctate, yellowish to yellowish brown under microscope, [no germ pore]; basidia 4-spored, 27-32 x 6-7 microns; pleurocystidia absent, cheilocystidia 22-63 x 3-12 microns, "cylindric, subventricose, or bottle-shaped"; cap cuticle of interwoven hyphae, bearing a tuft of colorless, long, slender (2.5-5 microns wide) hyphae; clamp connections absent on epicuticular hyphae, but found on hyphae of tomentum at base of cap

Spore deposit:
red-brown (Buczacki)

Notes:
Crepidotus versutus was reported from BC ((Davidson(1), Lowe(1))). Hesler(3) examined material from MI, NH, NY, and TN. There are collections from BC at the University of British Columbia and collections from WA and AK at the University of Washington. and a collection from ID at Boise State University.

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