Porodaedalea pini

Parasitic species on living wood of conifers, especially pines (Pinus), shell-shaped (bracket-like), 8 to 12 cm across and up to 7 cm thick, with a dark reddish-brown, hirsute/scabrous upper surface, an angular to daedaloid/labyrinthine pore surface with 1 to 3 pores per mm, and a reddish-brown context.

Hyphal system dimitic; skeletal hyphae thick-walled, aseptate, 4 to 7 µm wide, brown; generative hyphae hyaline, thin-walled, 2 to 4 µm wide, simple-septate.

Hymenial setae subulate to ventricose, thick-walled, brown, 40 to 60 µm long and 10 to 15 µm wide.

Basidia cylindrical-clavate, 15 to 18 µm long, 5 to 6 µm wide, simple-septate at the base, 4-spored.

Spores subglobose to ovoid, smooth, hyaline, thin-walled, 4.5 to 6 µm long, 4 to 4.5 µm wide, with a pointed apicular end, containing guttules, indextrinoid in Melzer's reagent.