Ascocarp Morphology. Ascocarp subglobose or lobed, orifice or cavity absent or present, 1-10 cm in diameter, brown or black, with warts, warts angulated, color of spore-bearing tissue brown, veins narrow and numerous. Peridium 200-400 micron, outermost layers 50 micron (Chevalier and Frochot, 1998), yellow-brown or red-brown, anatomical structure pseudoparenchymatic with angular cells, cell tangential dimension 10-15 micron (Chevalier and Frochot, 1998), cell radial dimension 10-15 micron (Chevalier e Frochot, 1998), innermost layers 150-300 micron, color hyaline (pale yellow), anatomical structure plectenchymatic, cell radial dimension 3 micron (hyphal diameter), external cystidia absent. Sterile veins plectenchimatic.
Asci ans spores Morphology. Asci globose, major axis 60-90(-110) micron (Pegler et al. 1993), minor axis 55-70 micron (Pegler et al. 1993), number of spores per ascus 1-6(-7), irregularly clustered.
Spores ellipsoid or subglobose, major axis 25-32 micrometer lenght (Chevalier and Frochot, 1998), minor axis 17-28 micrometer lenght (Chevalier and Frochot, 1998), color yellow or pale brown or medium brown, reticulation; ornamentation length 4-5(-8) micron (Chevalier and Frochot, 1993); number of meshes along the major axis 3-5.
Distribution. Habitat temperate; Putative plant host Quercus, or Corylus, or Ostrya, or Carpinus, or Tilia, or Fagus, or Castanea, or Pinus, or Cedrus.
Mycorrhizae morphology. Mycorrhizae emanting hyphae absent, or rare; anatomy of emanating hyphae: clamps absent; color of emanating hyphae hyaline; color of very tip whitish, or ochre, yellowish brown; color of older parts ochre, yellowish brown, or brown; cystidia absent, or present; wolly; color ochre; intercalate swelling present; ramification absent; anatomy of the mantle pseudoparenchymatus with angular cells.