In many areas of Spain, collectors call the ascocarps of T.
melanosporum brules contain a constant mixture of horizons due to the continuous digging that the harvesters, their dogs, and wildlife engage in to extract the ascocarps.
In his concept of the Pezizales Korf  placed those operculate discomycetes that are fimicolous with ascocarps
reduced in size and complexity, possessing non-amyloid, with smooth, hyaline ascospores in the Pyronemataceae tribe Theleboleae while Eckblad  would treat this taxon at the family level.
This genus is characterized by superficial ascomata usually covered with hairs or setae (6); membranaceous peridium, consisting of several pseudoparenchymatous layers; asci that are clavate or fusiform (with biseriately arranged ascospores) or sometimes cylindrical (with uniseriately arranged ascospores), thin-walled, evanescent and without apical structures; scarce paraphyses that disappear before ascocarps mature (7); ascospores that are brown or gray-brown (never opaque or black), one celled, with one or sometimes two germ pores, and exuding as a dark, black, sticky mass (8).
Ascocarp morphology and terminal hair ornamentation in thermophilic Chaetomium species.
ampullus may develop two necks rarely more, but this occurs in a very small percentage of ascocarps
. The terminal hairs of L.