Pholiota squarrosoides

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

Cap usually more than 2" across, and sometimes up to 8; usually tan, yellow, or pumpkin-colored

Having more than one of the following characters:
Cap slimy (all slimy MediumToBigLignicolousBrownSpored mushrooms go here)
Cap covered with pointy or fibrillose scales (all MediumToBigLignicolousBrownSpored mushrooms with this sort of scales go here)
Cap often yellowish

Growing on wood
Cap and stem with many pointy or patchy scales
Sometimes the scales wash off the cap in the rain (with a slippery cap, it's especially easy for that to happen); but they usually remain on the stalk (which is protected from the rain by the cap)
Cap typically yellowish

Pholiota squarrosoides     (Peck) Saccardo