Fruiting body: full resupinate, tightly attached to the substrate, forming thin, membranous crustose patches of several cm in extent, almost smooth surface if young, then tuberculate to verrucose., even ondontoid, young whitish, later yellowish, margin is diffuse.
Spore print: white-hyaline
Spore: narrow cylindric, allantoid, 7-8 x 1,5-2 μm
Flesh: soft, waxlike, without odor and taste
Habitat: on rotten wood of spruce, also on other conifers and also hardwoods, grows from summer to fall.