Vikalpa
Vikalpa M.J. D'souza, Boonmee, Bhat & K.D. Hyde, in Boonmee et al., Fungal Diversity: 10.1007/s13225-016-0363-z, [24] (2016).
Index Fungorum number: IF 551585; Facesoffungi number: FoF 01361, 4 morphological species (Species Fungorum 2022), no molecular data available.
Saprobic on submerged wood in freshwater habitats. Sexual morph: Unknown. Asexual morph: Hyphomycetous. Conidiomata sporodochial, superficial, punctiform or effuse, scattered, sometimes coalescing, pale brown to dark brown, with or without a mucilage covering, rarely inconspicuous. Mycelium immersed, composed of branched, septate, subhyaline to pale brown, smooth-walled hyphae. Conidiophores micronematous, aseptate, simple, hyaline to pale brown, smooth. Conidiogenous cells integrated, holoblastic, terminal, determinate, doliiform to cylindrical. Conidia acrogenous, solitary, dry, cheiroid, pale brown, smooth-walled, euseptate or distoseptate, consisting of a truncate basal cell on which three rows arise parallel and closely compacted, with all 3 rows in different planes, with or without appendages (Sutton 1985; Boonmee et al. 2016).
Type species: Vikalpa australiensis (B. Sutton) D'souza, Boonmee & K.D. Hyde
Notes: Vikalpa is unique in having euseptate conidia with 3 rows of cells each in a different plane. Species of Vikalpa are differentiated based on sizes of the sporodochial conidiomata and conidial features. Phylogenetically, Vikalpa is a distinct and well-supported genus in Dictyosporiaceae.
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