Pseudothyridariella Mapook & K.D. Hyde, Fungal Divers 101: 98 (2020).

MycoBank number: MB 557357; Index Fungorum number: IF 557357; Facesoffungi number: FoF 07826 – 2 morphological species (Mapook et al. 2020), 2 species with molecular data.

Type speciesPseudothyridariella chromolaenae Mapook & K.D. Hyde, Fungal Divers 101: 98 (2020).

NotesPseudothyridariella was introduced to accommodate the type species Pseudothyridariella chromolaenae and a new combination species P. mahakashae (Mapook et al. 2020). The genus is primarily characterized by immersed, obpyriform, yellowish brown to brown ascomata with a protruding ostiole, cylindric-clavate asci and hyaline to dark brown, ellipsoid to broadly fusiform, muriform ascospores surrounded by a hyaline gelatinous sheath (Mapook et al. 2020). Pseudothyridariella species resemble Thyridariella as both genera have ellipsoid to broadly fusiform, muriform ascospores with a hyaline gelatinous sheath (Devadatha et al. 2018b, Mapook et al. 2020). However, Parathyridaria has ascospores with a hyaline gelatinous sheath which is constricted at the central septum, while Thyridariella has ascospores surrounded by a wide circular gelatinous sheath, not constricted at the central septum (Devadatha et al. 2018b, Mapook et al. 2020). Phylogenetically, Pseudothyridariella chromolaenae forms a sister clade with P. mahakashae and clustered with other genera in Thyridariaceae with strong bootstrap support (Mapook et al. 2020).