fruiting body_surface_tomentose
<basidioma> tomentose
at first fleshy and sappy, later hard and brittle, upper surface at first finely tomentose and dark brown when fresh, more or less even, later the tomentum disappears in concentric zones exposing a slightly glossy black resinous crust when dried, and becomes rugose with numerous radial furrows and some broad sulcate bands
Fomes resinosus
Ischnoderma resinosum