Phellinus igniarius

About

Phellinus igniarius, commonly known as the willow bracket, fire sponge, false tinder polypore, punk ash polypore, or false tinder conk, is a fungus of the family Hymenochaetaceae. Like other members of the genus of Phellinus, it lives by saprotrophic nutrition, in which the lignin and cellulose of a host tree is degraded and is a cause of white rot.

Summary from Wikipedia