Massariothea Syd., Annls mycol. 37(3): 249 (1939)
Index Fungorum number: IF8855; 8 morphological species (Species Fungorum 2020), 2 species with sequence data.

Type species – Massariothea themedae Syd.

Notes – The genus is characterised by brown, distoseptate conidia with species commonly reported on grasses (Poaceae) with a worldwide distribution (Thambugala et al. 2018).