Phellinopsis conchata

On living or dead wood of broadleaved trees, preferentially Salix or Betula, with sessile basidiocarps ranging from resupinate to effused-reflexed, with coalescent brackets up to 15 cm across merging together, pale brown to blackish, an ochre-brown pore surface with 5 to 6 circular pores per mm, and a tough, woody, reddish-brown context.

Hyphal system dimitic; skeletal hyphae thick-walled, brown, 3 to 4 µm wide, aseptate; generative hyphae hyaline, thin-walled, 2 to 3 µm wide, simple-septate.

Hymenial setae large, 15 to 40 µm long, 4 to 8 µm wide, subulate to ventricose, thick-walled and brown, darkening noticeably in KOH.

Basidia clavate, 10 to 13 µm long, 6 to 7 µm wide, clampless, 4-spored.

Spores subglobose to ovoid, smooth, hyaline, slightly thick-walled, 4.5 to 6 µm long, 3.5 to 4.5 µm wide, with a small lateral hyaline apiculus, containing guttules, inamyloid in Melzer's reagent.