Asterinales » Asterinaceae


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

Index Fungorum number: IF 518813; Facesoffungi number: FoF xx, 1 morphological species (Species Fungorum 2021), molecular data unavailable.

Epiphytes. Superficial hyphae with appressoria. Appressoriaalternate, 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 was introduced by Hosagoudar (2012) with V. otonephelii as type species. Vishnumyces is characterized 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 doubtful genus in Mycosphaerellaceae. Fresh collection is needed to confirm the correct taxonomic placement of Vishnumyces.


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