Common Names: Mossy maple polypore, mossy cap polypore
Caps are 3 to 21 cm wide. Upper surface is whitish to grayish; finely hairy; covered with moss on older specimens. Pore surface is white to cream; pores 4 to 7 per mm.
Parasitic; solitary, in groups, or in vertical overlapping clusters on trunks of living deciduous trees, especially maple; year-round.