Description
Fruit-body perennial, hard, bracket-like, 10-20 x 5-10 cm. Upper surface smooth, concentrically zoned, cracked, grey-brown to black, with pale margin. With several, decurrent, slanting tube layers.
Tubes each layer 3-5 mm, dark rusty brown. Pores 5-6 per mm, circular, beige to cinnamon or rusty brown.
Spore-print colour white.
Occurrence
On trunks of Willow, occasionally hanging from a slanting trunk.
Parasitic.