Oak Mazegill

Daedalea quercina

On rotten oak and some other deciduous wood. Spring, summer, autumn (winter).

Fruiting bodies large, perennial. Cap 5-10 (20) cm across, 2-5 cm thick. Fruiting bodies corky, in the form of lateral caps (brackets), surface uneven, zoned, rough, pale brown, yellowish, greyish-brown, sometimes turning greenish when overgrown with algae. Tubes labyrinthine, formed by gills fused together by anastomoses. Flesh pale brown, corky. Characteristic features: hymenophore labyrinthine.

Grows on dead, rarely living deciduous trees, especially on oak stumps. Occurs on chestnuts, beeches, walnut. Very common, causes an active brown rot. An active saprotroph.