Nolanea quadrata

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)

Spores pink or reddish

Terrestrial (occasionally on rotting wood on the ground)
Gills attached (notched, adnate, or subdecurrent), sometimes almost free in small mushrooms

Cap up to 2" across; acutely conical when young, sometimes becoming umbonate in age; often silky but not scaly
Dull colored (shades of greyish brown) or brightly colored (usually yellow or salmon orange), but not really darkly colored
Gills barely attached to the stalk, sometimes appearing free
Stalk thin, fragile

Entire fruiting body brightly colored, usually yellow or salmon orange
Cap steeply conical, up to 1 1/4" across

Nolanea quadrata     M. A. Curtis & Berkeley