Angustimassarina Thambug., Kaz. Tanaka & K.D. Hyde, Fungal Divers. 74: 253 (2015).

MycoBank number: MB 551278; Index Fungorum number: IF 551278; Facesoffungi number: FoF 01085 – 12 morphological species (Species Fungorum 2020), 12 species with molecular data.

Type speciesAngustimassarina populi Thambug. & K.D. Hyde, Fungal Diversity 74: 254 (2015).

Notes – Thambugala et al. (2015b) established Angustimassarina with A. populi as generic type. Eleven species have been described, all from Germany and Italy (Thambugala et al. 2015b, Tibpromma et al. 2017, Index Fungorum 2020). Angustimassarina species are considered as fungicolous and they may be parasitic on other fungi and appear to grow within ascomata of other ascomycetes. The genus is characterized by uniloculate ascomata with a pore-like opening or through the cracks of host surface and fusiform to cylindrical or ellipsoidal-fusiform, septate, hyaline ascospores, becoming ocher brown at maturity. The hyphomycetous asexual morph of the genus comprises micronematous to semimacronematous, pale brown conidiophores, integrated, terminal, holoblastic, short-cylindrical to elongate-cylindrical, conidiogenous cells and solitary, elongate-clavate, pale to dark brown, 1–3-septate, conidia (Thambugala et al. 2015b).