Morosphaeriaceae Suetrong, Sakayaroj, E.B.G. Jones & C.L. Schoch, Stud. Mycol. 64:161 (2009).

MycoBank number: MB 515953; Index Fungorum number: IF 515953; Facesoffungi number: FoF 08304, 32 species.

Saprobic on lignocellulosic materials in marine, and freshwater habitats, or root endophyte of white poplar. Sexual morph: Ascomata solitary or gregarious, subglobose to lenticular, immersed becoming superficial, ostiolate, papillate, coriaceous, brown to black. Hamathecium numerous, filamenatous, branched, anastomosing, usually cellular pseudoparaphyses. Asci 8-spored, clavate to cylindrical, short pedunculate, thick-walled, bitunicate, fissitunicate, with an ocular chamber and apical apparatus, persistent. Ascospores 2-seriate, fusiform to ellipsoidal, hyaline to brown, 1–3- septate, mostly constricted at the septa, surrounded by a mucilaginous sheath. Asexual morph: Undetermined.

TypeMorosphaeria Suetrong, Sakayaroj, E.B.G. Jones & C.L. Schoch.

Notes – Suetrong et al. (2009) introduced Morosphaeriaceae in Pleosporales for two Massarina species M. ramunculicola and M. velatispora, which did not group in Massarinaceae. Presently, Aquilomyces, Clypeoloculus, Morosphaeria and Helicascus are accepted in this family, with some species collected from freshwater habitats (Suetrong et al. 2009, Hyde et al. 2013, Wijayawardene et al. 2014b, Zhang et al. 2013a, 2014c, 2015b, Tanaka et al. 2015, Luo et al. 2016, Zeng et al. 2018a, Jones et al. 2019a).