Marasasiomyces Crous, in Crous et al., Phytotaxa 202(2): 86 (2015).
MycoBank number: MB 811252; Index Fungorum number: IF 811252; Facesoffungi number: FoF 07440; 1 morphological species (Species Fungorum 2020), 1 species with molecular data.
Type species: Marasasiomyces karoo (B. Sutton & Marasas) Crous, Crous et al., Phytotaxa 202(2): 85 (2015).
≡ Tiarosporella graminis var. karoo B. Sutton & Marasas, Trans. Br. mycol. Soc. 67(1): 73 (1976).
Notes: This monotypic genus was introduced by Crous et al. (2015a) for M. karooo to accommodate tiarosporellalike taxa. Marasasiomyces is distinguished from Tiarosporella by conidiomata with long necks covered in brown setae, and holoblastic conidiogenesis. These characters are similar to Eutiarosporella, but differ on account of the nonclustered conidiomata.