This bracket fungus is perennial and is parasitic on deciduous trees, usually found on the lower part of the trunks. The brown, powdery spore deposit can be very dense on top of the cap and on the wood above it.
Common
Dedicuous woodland.
The bracket’s upper surface is thick, dark brown with a hard knobbly crust that is concentrically ridged. The margin is thick and obtuse and white during the growing season.
The flesh is dark brown and thicker than the tube-layer.
Tubes are stratified and reddish-brown. Pores 3–4 per mm, circular, white to pale yellow-ochre and discolour when handled.