Mushroom the Journal's Key to the Gilled Mushrooms in The Audubon Society Field Guide to North American Mushrooms
by Gary Lincoff
first published in the Summer 1985 issue of Mushroom, the Journal of Wild Mushrooming

The key starts with the spore color of the mushroom:

Spores White to Cream or Yellow

Spores Pink to Salmon, Brownish-Pink, or Reddish

Spores Ochre to Rust or Chocolate Brown

Spores Purple-Brown to Purple-Black, Smoky Black or Black



Mushroom, the journal for all seasons