Vikalpa lignicola D’souza, Bhat, H.Y. Su & K.D. Hyde
Index Fungorum number: IF551586, Facesoffungi number: FoF 01268
Etymology: ‘lignicola’ referring to the woody substrate.
Holotype: MFLU 15–1506
Saprobic on submerged decaying wood in a stream. Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Conidiomata sporodochial, scattered, later coalescing, pale brown to dark brown, inconspicuous on substrate. Mycelium immersed in the substrate, composed of branched, septate, smooth, subhyaline to pale brown hyphae. Conidiophores micronematous, subhyaline, smooth-walled, aseptate, 4–5 μm wide. Conidiogenous cells holoblastic, terminal, determinate, doliiform, subhyaline to pale brown. Conidia 25–40.5 × 10–18 μm (32.5 × 13 μm, n = 50), acrogenous, holoblastic, solitary, pale brown, smooth-walled, non-complanate, distoseptate, with three rows in different planes, rows arising from a basal cell, each arm composed of 8–10 cells, cells guttulate when young, non-guttulate at maturity.
Material examined: CHINA, Yunnan, Dali, Cangshan Mountain, Xue Shan Stream, on decaying wood submerged in the stream, 11 August 2014, Zonglong Luo, XS-69-2 (MFLU 15–1506, holotype).
Notes: Vikalpa lignicola resembles V. australiensis, V. freycinetiae and V. micronesiaca in having 3 rows and non-complanate conidia (Matsushima 1981; Sutton 1985; McKenzie 2008). However, it differs from V. australiensis, which has mucilage covering the sporodochium (Sutton 1985). Vikalpa freycinatiae has an appendage on all 3 rows, while V. micronesiaca has euseptate conidia (Matsushima 1981). All species accepted in this genus have notable features, however, DNA sequence data is needed to establish their phylogenetic relationships.
Boonmee, S., D’souza, M.J., Luo, Z. et al. Dictyosporiaceae fam. nov. Fungal Diversity 80, 457–482 (2016). https://doi.org/10.1007/s13225-016-0363-z
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McKenzie EHC (2008) Two new dictyosporous hyphomycetes on Pandanaceae. Mycotaxon 104:23–28