Fungalpedia – Note 1568, Marasasiomyces
Marasasiomyces Crous
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Botryosphaeriaceae, Botryosphaeriales, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on the host plant. Sexual morph: undetermined. Asexual morph: Conidiomata dark brown to black, semi-immersed, subglobose to pyriform, unilocular, setose, thick-walled, ostiolate. Ostiole subcylindrical, with an elongated neck, single, centrally located. Setae brown to dark brown, septate, branched, smooth or verruculose-walled. Conidiomatal wall composed of thick-walled, brown to hyaline cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells holoblastic, determinate, cylindrical, arising from the inner cavity of conidiomata. Conidia hyaline, subcylindrcial to fusiform, unicellular, smooth, bearing a cone-like, mucoid apical appendage.
Notes: The monotypic genus Marasasiomyces was introduced by Crous et al. (2015b) based on M. karoo (= Tiarosporella graminis var. karoo B. Sutton & Marasas). The genus is similar to Eutiasporella in its long-necked, hairy conidiomata, and holoblastic conidiogenous cells. The significant difference between these two genera is that Eutiasporella forms pulvinate, botryose conidiomata in clusters, while it is not the case in Marasasiomyces.
Type species: Marasasiomyces karoo (B. Sutton & Marasas) Crous, Phytotaxa 202(2): 86 (2015)
Other accepted species: Species Fungorum – search Marasasiomyces.
References
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD 2020 – Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.