Fruiting body: attached to the substrate,1-3 cm projecting from the substart, resupinate to semipileate, forming patches and covering several cm to dm, cups are well defined, sometimes imbricate, upper cup surface is concentrically zoned, hispid tomentose, undulating, zones are light gray to olive brown, margin is undulating, lobed, lower side is with hymenophore wrinkled veined.
Hymenophore: purple brown, veined wrinkled, sometimes whitsh pruinose from the spores, margin is distinctly bunded and sometimes lifted.
Spore print: white
Spore: cylindric, allantoid, with drops, 15-17,5 x 6-7 μm
Flesh: gelationous, tough, elastic, if dry corneus, brittle, hard, without odor, taste is mild.
Habitat: parasitic or saprophytic on maple and beech, also on other hardwoods, grows all year.