Xenospadicoidales » Xenospadicoidaceae » Neospadicoides

Neospadicoides yunnanensis

Neospadicoides yunnanensis Z.L. Luo, K.D. Hyde & H.Y. Su

Index Fungorum number: IF 555655, Facesoffungi number: FoF 05428

Etymology: Referring to the location where this fungus was collected, Yunnan Province, China

Holotype: MFLU 18–2329

Saprobic on decaying wood submerged in freshwater habitats. Sexual morph: Undetermined. Asexual morph: Colonies on decaying wood effuse, pale brown, hairy. Mycelium partly immersed in the substrata, composed of pale brown, septate, smooth, branched hyphae. Conidiophores 113–153 µm long, 4–6 µm wide (x̄ = 133 ´ 5 µm, n = 20), macronematous, mononematous, erect, unbranched, dark brown, paler towards the apex, straight or slightly flexuous, cylindrical, septate, smooth, thick-walled, occasionally swollen at the apex. Conidiogenous cells polytretic, integrated, terminal and intercalary, with pale colored pores remaining at the conidiogenous loci. Conidia 7.5–10.5 µm long, 4–6 µm wide (x̄ = 9 ´ 5 µm, n = 20), acropleurogenous, solitary, pale brown, obovoid, guttulate, mostly 2-septate, comprising a proximal euseptum and a distal distoseptum, with dark band at basal septa, smooth-walled.

Material examined: CHINA, Yunnan Province, Lancang River, saprobic on decaying wood submerged, December 2017, X.J. Su, S-1499 (MFLU 18–2329, holotype), ex-type living culture DLUCC 1499.

 

Notes: Neospadicoides yunnanensis resembles Spadicoides hodgkissa in having macronematous, mononematous, erect, solitary, unbranched, dark brown, paler towards the apex, straight or slightly flexuous, cylindrical, septate, smooth conidiophores occasionally swollen at the apex, polytretic, integrated, terminal and intercalary conidiogenous cells with pale colored pores remaining at the conidiogenous loci and solitary, obovoid, guttulate conidia comprising a proximal euseptum and a distal distoseptum (Ho et al. 2002). However, Neospadicoides yunnanensis differs from Spadicoides hodgkissa in having pale brown conidia with dark band at basal euseptum while Spadicoides hodgkissa has versicolored conidia comprising a proximal euseptum and a distal distoseptum and the distal distoseptum possesses a conspicuous central pore which is surrounded by a pigmented ring, appearing as dolipores in side view.

 

References

Ho WH, Yanna Hyde KD (2002) Two new species of Spadicoides from Brunei and Hong Kong. Mycologia 94:302–306

Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.

 

Fig. 1. Neospadicoides yunnanensis (MFLU 18–2329, holotype) a Colonies on substrate. b Conidiophore with conidiogenous cells. c, d Conidiophore with conidia. e–h Conidia. Scale bars: c, d = 50 µm, b, e = 20 l µm, f–h = 5 µm.

 

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