A widespread family of wood‑inhabiting Basidiomycetes producing coriaceous to woody fruitbodies, most commonly crusts or perennial brackets, but also including a few stipitate agarics. Members are united by their brownish tissues, absence of clamp connections, and the presence of setae, thick‑walled, dark, sterile elements embedded in the hymenium or context. The family includes several important forest pathogens responsible for white rot, heart rot, and cankers in living trees.

A small Australasian genus of woody, perennial bracket fungi characterised by sessile, dimidiate basidiocarps, a tough, corky to woody context, and a hymenium densely armed with setae. Species typically occur on dead Nothofagus wood, producing white rot.