Monoseptella Wanas., Gafforov & K.D. Hyde, in Wanasinghe et al., Fungal Divers. 89: 94 (2018).
MycoBank number: MB 554162; Index Fungorum number: IF 554162; Facesoffungi number: FoF 04003; 1 morphological species (Species Fungorum 2020), 1 species with molecular data.
Type species – Monoseptella rosae Wanas., Gafforov & K.D. Hyde, in Wanasinghe et al., Fungal Divers. 89: 94 (2018).
Notes – Monoseptella is characterized by superficial, globose to subglobose, ostiolate ascomata, septate pseudoparaphyses, bitunicate, cylindrical asci and overlapping 1-seriate, broadly fusoid to cylindrical, hyaline, 1-septate ascospores surrounded by a mucilaginous sheath (Wanasinghe et al. 2018c). There are no asexual morphs of Monoseptella reported (Wanasinghe et al. 2018c). Species in Asymmetricospora, Byssosphaeria, Herpotrichia and Sarimanas within Melanommataceae have hyaline, 1-septate ascospores (Tian et al. 2015, Wanasinghe et al. 2018c). However, Asymmetricospora has lenticular ascomata and clavate asci (Tian et al. 2015) versus Monoseptella which has globose to subglobose ascomata and cylindrical asci (Wanasinghe et al. 2018). Herpotrichia has guttulate and ellipsoidal ascospores and Sarimanas has broadly fusiform to ellipsoidal ascospores, while ascospores of Monoseptella are broadly cylindrical and not guttulate. Monoseptella is phylogenetically apart from these similar species in multi-gene phylogenetic analyses (Wanasinghe et al. 2018c), but clustered with Sarimanas and another asexual genus Pleotrichocladium. Wanasinghe et al. (2018c) suggested to merge Monoseptella, Pleotrichocladium and Sarimanas in one genus if the trichocladium-like asexual morphs is reported from both Monoseptella and Sarimanasi genera in the future.