Endodothiora Petr., Annls mycol. 27(5/6): 345 (1929).
Parasitic on Dothidea puccinioides. Sexual state: Ascostromata black, immersed, becoming erumpent, solitary or gregarious, subglobose to broadly ellipsoid, coriaceous, multiloculate, with 2−5 locules, cells of ascostromata composed of dark brown to black cells of textura angularis. Locules globose to subglobose, without ostioles. Peridium of locules thin-walled, composed of light brown to hyaline cells of textura angularis. Asci 20−26-spored, bitunicate, cylindrical to broadly cylindrical with a short pedicel, rounded at the apex. Ascospores overlapping, crowded, hyaline, oblong, 5−7 septate, constricted at the primary septum, smooth-walled. Asexual state: Unknown.
Notes: Endodothiora was introduced by Petrak (1929) to accommodate a single species E. sydowiana Petr., which is immersed in ascostromata of Dothidea puccinioides (DC.) Fr., Syst. (Barr 1972). Polyspored asci, multiseptate hyaline ascospores of Endodothiora share similar characteristics with those of Sydowia, but immersed parasitic habitat excludes it from Sydowia (Barr 1972, 2001). Luttrell (1973) placed this genus in Dothioraceae based on it being parasitic on Dothidea collecta (Schwein.) Ellis & Everh., and immersed in the stroma of the host fungus. We re-examined the type and we found different asci with brown ascospores (Dothidea puccinioides) which share the same ascomata that is good proof for E. sydowiana being parasitic on the Dothidea puccinioides. No sequence data is available for this monotypic genus.
Type species: Endodothiora sydowiana Petr., Annls mycol. 27(5/6): 345 (1929).