found growing on decaying Populus branch.
Finely fuzzy, dark brown crust fungus with a white growing edge that is often effused-reflexed (curved back, or sticking up on the ends). Grows on dead sticks and branches.
The Peniophoraceae are a family of fungi in the order Russulales. Species of this family have a cosmopolitan distribution and are mostly saprobic, causing rots of standing and fallen wood. According to a 2008 estimate, the family contains 7 genera and 88 species.