Yellow Trunk Rot of Oak
Description
Fruit-body perennial, hard, bulb-shaped to hoof-shaped or bracket-like, 8-25 x 5-10 cm, 5-20 cm thick. Upper surface smooth, rusty brown or grey-brown or black-brown, with obtuse, yellow-brown margin. With several tube layers.
Tubes each layer 3-5 mm, yellow-brown. Pores 5-6 per mm, circular, yellow-brown to rusty-brown.
Spore-print colour white.
Occurrence
On trunks of old deciduous trees, favouring Oak, in avenues or open woodland.
Parasitic.
Status
Rare (Red Data List, ed. 1)