An annual polypore, usually resupinate.  The colour ranges from cream to rusty brown, and as it mature it develops a black margin along entire base.  The fertile surface has corase pores spaced at 1 - 2 per mm.  

Photograph fertile surface to show pores; note host plant and substrate

On deciduous wood, usually living Oak or Hazel, causing white rot (ref. Laessoe & Petersen)

Status in Leicestershire and Rutland not known.