Morosphaeria Suetrong, Sakayaroj, E.B.G. Jones & C.L. Schoch in Suetrong et al., Stud. Mycol. 64:161 (2009).
Saprobic on host. Sexual morph: Ascomata solitary or gregarious, subglobose to lenticular, immersed becoming superficial, ostiolate, papillate, coriaceous, brown to black, pseudoparaphyses filamenatous, anastomosing, branching, and numerous. Asci 8-spored, clavate to cylindrical, short pedunculate, thick-walled, bitunicate, fissitunicate, with an ocular chamber and apical apparatus, persistent. Ascospores hyaline, 1–3 septate, constricted at the septa, fusiform to ellipsoidal, surrounded by a mucilaginous sheath. Asexual morph: Unknown (Adapted from Suetrong et al., 2009).
Type species: Morosphaeria velatispora (K.D. Hyde & Borse) Suetrong, Sakay., E.B.G. Jones & C.L. Schoch
Notes: Morosphaeria was introduced by Suetrong et al. (2009) with M. velatispora as type species. Morosphaeria is characterized by solitary or gregarious, subglobose to lenticular ascomata, clavate to cylindrical, short pedunculate asci and hyaline, 1–3 septate ascospores surrounded by a mucilaginous sheath. Boonmee et al. (2012) transferred Kirschsteiniothelia elaterascus to Morosphaeria based on phylogenetic analysis of ITS, LSU and SSU sequence data. Zhang et al. (2013) re-transferred Kirschsteiniothelia elaterascus to Helicascus based on analysis of LSU and SSU sequence data. Devadatha et al. (2018a) added M. muthupetensis to Morosphaeria. Morosphaeria is morphologically and phylogenetically a distinct genus in Morosphaeriaceae. Molecular markers available for Morosphaeria are LSU, SSU, ITS, TEF1.