Dryad's saddle mushroom

Description:

Polyporus squamosus is an basidiomycete bracket fungus, with common names including Dryad's saddle and Pheasant's back mushroom. It has a widespread distribution, being found in North America, Australia, Asia, and Europe, where it causes a white rot in the heartwood of living and dead hardwood trees.

Habitat:

Wetland woods, growing on a maple stump.

Notes:

Edible. Common in May and June. I found this specimen on the North Des Plaines River Trail.