Asterinales » Asterinaceae


Vishnumyces Hosag., Indian Phytopath. 63(1): 85 (2010).

Index Fungorum number: IF 518813; Facesoffungi number: FoF 11879, 1 morphological species (Species Fungorum 2022), molecular data unavailable.

Epiphytes. Superficial hyphae with appressoria. Appressoria alternate, about 20% opposite, stalk cells 2–7μm long, cylindrical to cuneate, head cells 8– 13×7–13μm, ovate to globose, stellately sublobate. Sexual morph: Thyriothecia scattered, orbicular, stellately dehiscing at the centre, margin fimbriate, fringed hyphae straight to flexuous. Asci 8-spored, bitunicate, oblong to cylindrical, slightly pedicellate. Ascospores brown, 1-septate, apiosporous, larger cell, ovate to oblong, smaller cell, ovate to globose, often mammiform, smooth-walled. Asexual morph: Unknown.


Type species: Vishnumyces otonephelii Hosag. & Harish


Notes: Vishnumyces is characterised by orbicular thyriothecia, which dehisce stellately at the centre, and uniseptate ascospores. Vishnumyces differs from other genera of Asterinacaeae in having apiospores with a small basal cell (Harish and Hosagoudar 2010). Hongsanan et al. (2014) treated Vishnumyces as a doubtful genus in Mycosphaerellaceae. Fresh collections are needed to confirm the taxonomic placement of Vishnumyces.


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