Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Fuscoporia gilva
Cap margin yellow, lightening with age; pore surface purple-brown, darkening with
age.  Flesh cork-like; often orange-brown.  
Fuscoporia gilva is a pathogen of oak
trees, causing
white rot. Formerly known as Phellinus gilvus.
See Phellinus gilvus at
Fungi Growing on Wood

Also described at
MushroomExpert.Com
See Macrofungi Associated with Oaks of
Eastern North America
(2008), D.E.
Binion, et al., p. 297.