Wongia suae sp. nov., a lignicolous freshwater fungus from Yuanjiang (Red River) Basin, China Author Zhang, Liang 0009-0006-6746-328X College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P. R. China & 2953069464 @ qq. com; https: // orcid. org / 0009 - 0006 - 6746 - 328 X 2953069464@qq.com Author Shen, Hong-Wei 0000-0003-2508-1970 College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P. R. China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand & hongweifungi @ outlook. com; https: // orcid. org / 0000 - 0003 - 2508 - 1970 hongweifungi@outlook.com Author Bao, Dan-Feng 0000-0002-5697-4280 College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P. R. China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & 864143104 @ qq. com; https: // orcid. org / 0000 - 0002 - 5697 - 4280 864143104@qq.com Author Li, Long-Li 0000-0002-6809-3966 College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P. R. China & 2823619303 @ qq. com; https: // orcid. org / 0000 - 0002 - 6809 - 3966 2823619303@qq.com Author Su, Xi-Jun 0000-0002-6357-7750 College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P. R. China & 394271071 @ qq. com; https: // orcid. org / 0000 - 0002 - 6357 - 7750 394271071@qq.com Author Luo, Zong-Long 0000-0001-7307-4885 College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P. R. China & Co-Innovation Center for Cangshan Mountain and Erhai Lake Integrated Protection and Green Development of Yunnan Province, Dali University, Dali 671003, Yunnan, P. R. China & luozonglongfungi @ 163. com; https: // orcid. org / 0000 - 0001 - 7307 - 4885 text Phytotaxa 2023 2023-09-28 616 3 258 268 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.616.3.5/51142 journal article 298654 10.11646/phytotaxa.616.3.5 cf36ad1e-e5d7-445a-85f2-0f7c1e68b968 1179-3163 10145727 Wongia fusiformis D.F. Bao, H.Y. Su, K.D. Hyde & Z.L. Luo. , Journal of Fungi 7: 669. (2021), FIGURE 2 Index Fungorum number: IF558595; Facesoffungi number: FoF 09917. Saprobic on submerged decayed wood in freshwater habitats. Sexual morph : Undetermined. Asexual morph : Colonies on superficial substratum, hairy, scattered, granulate and black. Mycelium partly superficial and partly immersed, composed of branched, septate, smooth and with brown to pale brown hyphae. Conidiophores 97–154 × 3–4 µm, (x = 125 × 4 µm, n = 10), macronematous, mononematous, simple, solitary, septate, erect, straight or slightly flexuous, dark brown, paler towards apex and smooth-walled. Conidiogenous cells polyblastic, denticulate, terminal, sympodial, subhyaline to pale brown. Conidia 14–18 × 4–5 µm (x= 16 × 5 µm, n = 30), acropleurogenous, solitary, fusiform, clavate, tapering and pointed at both ends, (1)–3-septate, pale brown to brown, slightly darker at middle cell and paler at end cells, smooth-walled. Culture characteristics : Conidia germinating on PDA within 24 h and germ tubes produced from the basal and apical cell of conidia. Colonies grew on PDA, reaching 31–33 mm in three weeks at 25°C, rough surface, with dense mycelia, velvety, dry, umbonate in the middle from the side view, edge undulate, brown to dark brown from front, dark brown from reverse and not producing pigmentation in culture. Material examined :— CHINA , Yunnan Province , Yuxi City , on submerged decaying wood in freshwater stream in Yuanjiang basin, February 2022 , Hong-Wei Shen, S-3682 (KUN-HKAS 102464), living cultures, CGMCC 3.24254 = KUNCC 22-2676 ; ibid. on submerged decaying wood in freshwater stream in Yuanjiang basin, February 2022 , Hong-Wei Shen, S-3374 (KUN-HKAS 102463), living culture, KUNCC 22-12675 . Notes : Wongia fusiformis was introduced by Bao et al . (2021) based on morphological and phylogenetic analyses. In our phylogenetic analysis, the two new collections (KUNCC 22-12675 and KUNCC 22-12676) clustered with W. fusiformis with 100 ML/1.00 PP support ( FIGURE 1 ). The morphology of our new isolates fits W. fusiformis well. We, therefore, identified them as W. fusiformis . However, conidia of our new isolates have 1–3-septate, while the holotype has conidia with 1–2-septate. This may due to the insufficient photography, which could not provide enough morphological information for the fungus ( Bao et al . 2021 ).