little white crep

This genus of small, brown-spored pleurotoid mushrooms contains a multitude of boring whitish to brownish species and a few (well, two) that are more interesting. The rare Crepidotus cinnabarinus is bright red, and Crepidotus crocophyllus usually features yellow to orange gills . . . but everything else is brown or white, and requires extensive microscopic study for accurate identification. ( http://www.mushroomexpert.com/crepidotus.html )
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---Pileus 3-10 mm broad, sessile, semiorbicular, ungulate, finally more or less applanate, white, villose or silky, margin even, incurved. Context whitish, thin; odor and taste mild.
----Lamellae radiating from a lateral point, white, then pale pinkish-brown, close or nearly subdistant, broad or moderately so, edges paler, fimbriate.
----Spores 7.5-10 (11) x 4.5-6 µ, ellipsoid to subovoid, base more or less pointed, slightly inequilateral in profile, surface wrinkled-verruculose. Basidia 28-35 x 6-8 µ, 4-spored. Pleurocystidia none; cheilocystidia 25 -58 (70) x 4-9 µ, filamentous, clavate, flask-shaped or ventricose with a slender neck. Gill trama subparallel to slightly interwoven, hyphae 3-7 µ broad. Pileus trama interwoven. Cuticle not always sharply differentiated, the surface bearing a turf of colorless hyphae, 3-7 µ broad, the apical portions at times crooked or coiled. Clamp connections present