Neohelicosporium thailandicum Y.Z. Lu, J.C. Kang & K.D. Hyde
Index Fungorum number: IF 822060; Facesoffungi number: FoF 03575.
Holotype: MFLU 17-1153.
Etymology: ‘thailand’ referring to collecting site.
Saprobic on submerged decaying wood. Sexual morph: Undetermined. Asexual morph: hyphomycetous, helicosporous. Colonies on the substratum superficial, effuse, gregarious, white. Mycelium composed of partly immersed, partly superficial, pale brown, septate, sparsely branched hyphae, with masses of crowded, glistening conidia. Conidiophores 40–74 μm long, 4.5–5.5 μm wide, macronematous, mononematous, erect, flexuous, short, cylindrical, septate, arising directly on substrate, pale brown, smooth-walled. Conidiogenous cells 9–13 μm long, 4.5–5.5 μm wide, holoblastic, mono- to polyblastic, integrated, terminal or intercalary, cylindrical, with denticles, pale brown, smooth-walled. Conidia 30.5–45 μm diam. and conidial filament 3.5–4.5 μm wide (x̄ = 37 μm diam., 4 μm wide, n = 50), 200–265 μm long, tightly coiled 2.5–3.5 times, becoming loosely coiled in water, rounded at the tip, up to 36-septate, guttulate, hyaline. (Descriptions from Lu et al. 2018)
Material examined: THAILAND, Krabi, Muang, Nongtalay, Khao Hang Nak, on decaying wood in a freshwater stream, 16 December 2015, Saranyaphat Boonmee, HN04 (MFLU 17-1153, holotype; GZAAS 17-0016, isotype); ex-type living culture, MFLUCC 16-0221.
Photographic plate: see Lu et al. (2018)
Freshwater distribution: Thailand (Lu et al. 2018)
Lu YZ, Boonmee S, Liu JK, Hyde KD, McKenzie EHC, Eungwanichayapant PD, Kang JC (2018a) Multi-gene phylogenetic analyses reveals Neohelicosporium gen. nov. and five new species of helicosporous hyphomycetes from aquatic habitats. Mycol Prog 17:631–646. https://doi.org/10.1007/s11557-017-1366-1