Endococcus propinquus  

Anamorph: not known.
Teleomorph: stromata absent. Ascomata perithecia, 250-300 µm diam., scattered or in large clusters, subglobose, becoming erumpent through the host thallus, with a shortly papillate, partially exposed neck, ostiolate, black. Peridium carbonaceous, comprising 3-6 layers of radially compressed thick-walled dark brown angular cells. Interascal tissue absent, the ostiole lined internally with well-developed periphyses 25-30 µm long and 3-3.5 µm diam. Asci in a basal fascicle, forming in a gelatinized matrix, 45-55 x 12-17 µm,  clavate to cylindric-clavate, with a markedly thickened apex when young, fissitunicate, not staining in iodine, 8-spored. Ascospores biseriately arranged, (10-) 11.5-12.5 x 5-6.5 µm, ellipsoidal to fusiform-ellipsoidal, the ends obtuse to acute, hardly constricted at the single ± median septum, dark brown, smooth- and thick-walled, without an epispore, gelatinous sheath or appendages.