Xenomassariosphaeria Jayasiri, Wanas. & K.D. Hyde, Fungal Divers. 89: 103 (2018).
MycoBank number: MB 415849; Index Fungorum number: IF 415849; Facesoffungi number: FoF 03849, 1 morphological species (Species Fungorum 2020), 1 species with molecular data.
Type species – Xenomassariosphaeria rosae Jayasiri, Camporesi & K.D. Hyde, in Wanasinghe et al., Fungal Divers. 89: 103 (2018).
Notes – Xenomassariosphaeria was introduced with the type species, X. rosae as the first record of its sexual morph in Paradictyoarthriniaceae by Wanasinghe et al. (2018c). The holotype specimen (MFLU 15-1073) was isolated from dead aerial spines of Rosa canina in Italy. Morphologically, X. rosae is similar to Massariosphaeria spp. in having transversely septate ascospores, thick-walled, and surrounded by a prominent gelatinous sheath (Tanaka & Harada 2004).
Species