Ascocarp Morphology. Ascocarp subglobose or globose, orifice or cavity absent, 0.5-2(-4) cm in diameter, brown (reddish-brown) or red (bruno rossiccio) or black (in T. rufum f. lucidum), smooth, peridium scabrous, color of spore-bearing tissue red (marrone-arancio pallido) or brown (reddish-brown), veins large and rare (radiate from the base of the ascocarp). Peridium 250-400 micron, outermost layers 80-90 micron, yellow-brown, anatomical structure pseudoparenchymatic with angular cells (with wall 2-3 micron thick), cell tangential dimension 12-15 micron, cell radial dimension 12-15 micron, innermost layers 150-300 micron, anatomical structure plectenchymatic, cell tangential dimension 4-5 micron, cell radial dimension 4-5 micron, external cystidia absent.
Asci ans spores Morphology. Asci sacata or globose (with a short or sometimes more elonged stalk 15-50 micron long), major axis 57-83 micron, minor axis 44-63 micron, number of spores per ascus 1-5, irregularly clustered.
Spores ellipsoid or subglobose, major axis 22-27 micrometer lenght, minor axis 16-21 micrometer lenght, color pale brown or medium brown, spines; ornamentation length 2-3(-4) micron.
Distribution. Habitat temperate; Putative plant host Quercus, or Fagus, or Pinus.
Mycorrhizae morphology. Mycorrhizae emanting hyphae absent, or rare; anatomy of emanating hyphae: clamps absent; color of emanating hyphae hyaline; color of very tip ochre, yellowish brown; color of older parts brown; cystidia absent; anatomy of the mantle pseudoparenchymatus with epidermoid hyphal cells" like a puzzle".