Endococcus macrosporus  

Anamorph: not known.
Teleomorph: stromata absent. Ascomata perithecia, 120-180 µm diam., scattered over the host thallus, globose, becoming erumpent through the host thallus, with a hardly papillate 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. Asci in a basal fascicle, forming in a gelatinized matrix, mature asci not seen so size is uncertain, thin-walled with a hardly thickened apex when young, presumably with rostrate dehiscence, not staining in iodine, 8-spored. Ascospores biseriately arranged, 18-20 x 6-7 µm, 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.