Fuscoporia gilva, commonly known as the oakconk, is a species of fungal plant pathogen that infects several hosts.
Description
The fruit bodies typically grow in rows of horizontal platforms, which grow over several years and sometimes "smear" onto the wood. The caps are usually semicircular with lumpy margins, wide, with zonate colouration ranging from dark brown to light reddish-brown or yellowish at the margin, which is up to 1 cmthick and velvety. There are 5–8 pores persquare millimetre. The flesh is tough and corky. The spore print is whitish or yellow.
Similar species
Mensularia radiata, the alder bracket, is usually found on non-oak hardwoods; fresh specimens often exhibit white-tipped pores near the margin.