Summary:
Crepidotus submollis is characterized by moderately large, obscurely punctate spores, crooked or contorted cheilocystidia, and straight hyphae on the cap, (Hesler(3)). Other features include a dry, stemless, white cap that becomes cinnamon-buff when old, white gills that become ferruginous then clay color to ochraceous tawny, and growth on hardwood. The description is derived from Hesler(3).

Cap:
1-3cm broad, conchate [shaped like oyster shell], dimidiate [semicircular] to subreniform [somewhat kidney-shaped], becoming flattened, margin remaining inrolled for some time; white, when old becoming somewhat cinnamon-buff; dry, pruinose-pubescent to fibrillose, when old becoming bald, margin sulcate [grooved] or plicate [pleated]

Flesh:
thin; white

Gills:
radiating from lateral point of attachment, close, narrow, becoming ventricose [broader in middle] and broad when old; "white, becoming ferruginous, then clay color to ochraceous tawny"; edges even or crenulate [finely scalloped]

Veil:
[none]

Microscopic spores:
spores 7-9.5 x 4.5-5.5 microns, elliptic to slightly oval in face view, somewhat inequilateral in side view, minutely punctate, [no germ pore]; basidia 4-spored, (22)28-34(39) x 6-8 microns; pleurocystidia none, cheilocystidia 24-50 x 4-10 microns, "crooked and contorted, ventricose, clavate, subcylindric, often forked or knobbed"; cap cuticle "of repent hyphae, or not always sharply differentiated", the surface bearing a turf of colorless, straight hyphae, 3-6 microns wide; clamp connections present

Notes:
Hesler(3) examined collections from WA, OR, CA, and MI. It was reported in Lowe(1) from BC.

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