A medium to large annual bracket, constricted at base but broadly attached; yellow-brown to brownish-red.  Pores large, 1 - 2 per mm, red staining; rounded at first then radially stretching with age to become elongate. No hairs on cap or margin. 

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

Dead deciduous wood, particularly Willow

Common in Leicestershire and Rutland.