Birch Lenzites
Description
Fruit-body annual, fan- to rosette-shaped, usually attached laterally, occasionally somewhat centrally, often in overlapping tufts. Cap 3-10 x 2-5 cm, 1-2 cm thick. Upper surface concentrically zoned, finely felted, beige to grey-ochre or light brown, often green due to algal growth, with acute margin. Pores 12-15 per cm, up to 10 mm wide, elongate with transverse walls to gill-like, often forked, cream to ochre or grey-brown. Flesh corky, tough, whitish.
Spore-print colour white.
Occurrence
Fairly common on stumps, trunks and branches of deciduous trees (Birch, Oak, Beech), parasitising on the mycelium of Trametes species.
Saprophyte. (Parasitic?)