Crepidotus     Genus

This is a key to gilled mushrooms, that is, mushrooms having a definite cap with a fertile surface consisting of gills. The fruiting body usually also has a stem, although that may be lateral or absent (usually, then, the mushroom is growing from wood). You can use this key to identify mushrooms that you find.

Fruiting body containing fibers (usually in the stalk)

Gills not free
Spore print tan, orange, deep ochre, yellowish olive, olive brown, rusty or cinnamon brown or deep brown
Ring usually either absent or not membranous

Growing on wood

Little Lignicolous Brown Spored     Subfamily Cap usually less than an inch across; hygrophanous; usually darker shade(s) of brown: more or less caramel-colored Sometimes lacking a stem

Links from Look-alikes Cheimophyllum     Genus Cap white, up to 3/4" across Sometimes with very stubby stalk, sometimes sessile with a single attachment point

Crepidotus     Genus     (Fries) Staude

Diagnosis

• Growing shelf-like from dead hardwoods
  
• Cap often an inch or less across; always less than 3"
  
• Stem absent or very stubby. Usually just attached to the substrate by a point on the cap from which the gills diverge

Comments

Narrow down your identification:

Cap 1/2-1 1/2" across; white, with a striate margin when young, becoming brownish and unstriate (?) in age

Cap 1/4-1/2" across; yellowish brown
Gills yellow or yellowish orange until colored brownish by spores

Cap 1/4-3/4" across; white; minutely furry
Gills white until colored brownish by spores

Cap 1/2-3" across; surface light brown or olive brown, breaking up into many tiny scales which may wash away in rain or age; gelatinous in wet weather

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