Fusoidiella Videira & Crous, in Videira et al., Stud. Mycol. 83: 87 (2016).
Index Fungorum number: IF 816818; Facesoffungi number: FoF 08503, 2 morphological species (Species Fungorum 2021), 2 species with molecular data.
Phytopathogenic, causing small yellow to olivaceous green spots on leaves. Mycelium internal. Conidiophores aggregated in dense fascicles, arising through stomata, aseptate, i.e. usually reduced to conidiogenous cells, smooth, brown, sub cylindrical to clavate, straight to curved due to thickening of the wall on one side, not geniculate, one to multiple conidiogenous loci located laterally or apically, loci conspicuous, thickened and broad, areolate, darkened and refractive. Conidia solitary, smooth, light brown, thin-walled, fusiform to obclavate-fusiform, straight to somewhat curved, septate, not constricted at the septa, apex obtuse and base truncate, hilum flattened, thickened, darkened and refractive (Adapted from Videira et al. 2016).
Type species: Fusoidiella depressa (Berk. & Broome) Videira & Crous
Notes: Fusoidiella was introduced by Videira et al. (2016) with F. depressa as type species. Fusoidiella is characterized by dense fascicles conidiophores, conspicuous, thickened and broad conidiogenous cells, obclavate-fusiform conidia. In the phylogenetic analysis of Videira et al. (2016), Fusoidiella formed a single lineage within Mycosphaerellaceae. Fusoidiella is a distinct and well-supported genus in Mycosphaerellaceae.