Coniophora yunnanensis Y. Yang & C. L. Zhao 2023, sp. nov.
Creators: name: Yang, Yang
name: Li, Rong
name: Liu, Chaomao
name: Zhao, Changlin
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Boletales
Coniophoraceae
Coniophora
Coniophora yunnanensis

description: Coniophora yunnanensis Y. Yang & C.L. Zhao, sp. nov. Figs. 1, 2, 4, 5
MycoBank no.: MB 847019
Holotype:— CHINA. Yunnan Province, Pu’er, Jingdong County, Wuliangshan National Nature Reserve, E 100°31′10′′, N 24°25′07′′, elev. 1500 m, on the dead bamboo, 2 October 2017, CLZhao 3594 (SWFC!), GenBank No. (ITS OP901837; nLSU OP904196).
Etymology: — yunnanensis (Lat.): refers to the locality (Yunnan Province) of the type specimen.
Basidiomata: —Annual, resupinate to effused, separable, soft ceraceous, without odor or taste when fresh, becoming hard corky upon drying, up to 10 cm long, 4 cm wide, 0.5–1 mm thick; hymenial surface odontoid, 100–500 µm long, olivaceous buff (4C4) when fresh, olivaceous buff (4C4) to greyish brown (5/6E4) drying; sterile margin indistinct and olivaceous buff (4C4).
Hyphal structure: — Hyphal system monomitic; generative hyphae with simple septa, colorless, thin-walled, rarely branched, interwoven, 2.5–6 μm in diam; IKI–, CB–, tissues unchanged in KOH.
Hymenium: — Cystidia and cystidioles absent; basidia cylindrical, constricted, 40–90 × 5–7 µm, with 4-sterigmata and a basal simple septum, basidioles dominant, in shape similar to basidia, but slightly smaller.
Basidiospores: — Ovoid to broadly ellipsoid, smooth, thick-walled, pale yellowish, with oil drops, IKI–, CB–, (8–)8.5–12.5 × (5.5–)6.5–8.5 µm, L = 10.7 µm, W = 7.27 µm, Q = 1.46–1.53 (n = 60/2), Qm = 1.47.
Additional specimen examined: — CHINA. Yunnan Province, Pu’er, Jingdong County, Wuliangshan National Nature Reserve, E 100°31′10′′, N 24°25′07′′, elev. 1500 m, on the dead bamboo, 2 October 2017, CLZhao 3517 (SWFC!), GenBank No. (ITS OP901836; nLSU OP904195).
Notes: Morphologically, Coniophora arida (Fr.) P. Karst. (1868: 370), C. hanoiensis Pat. (1907: 76), C. olivacea (Fr.) P. Karst. (1879: 162), and C. puteana (Schumach.) P. Karst. (1803: 397) are similar to C. yunnanensis by having ovoid to ellipsoid basidiospores. However, C. arida differs from C. yunnanensis by its wider basidia (40–70 × 7–10 µm), and presence of the hyphal strands (Bernicchia & Gorjón 2010); C. hanoiensis is separated from C. yunnanensis by its white to yellowish-brown hymenial surface and dimitic hyphal system (Ginns 1982); C. olivacea is distinguished from C. yunnanensis by smooth hymenial surface, presence of the thick-walled septate cystidia and dextrinoid basidiospores (Bernicchia & Gorjón 2010); C. puteana is separated from C. yunnanensis by having the tabular, yellowish-brown, smooth basidiomata and brownish basidiospores (Bernicchia & Gorjón 2010).
Coniophora yunnanensis resembles C. arachnoidea, C. fusispora (Cooke & Ellis) Cooke (1889: 650) and C. ladoi Tellería (1991: 236) in having a odontoid hymenial surface. However, Coniophora arachnoidea is different from C. yunnanensis by brownish hymenophore and smaller basidiospores (6–8 × 4–5 µm) (Blanco et al. 2009); C. fusispora can be delimited from C. yunnanensis by its orange-yellow to brown hymenophore and longer basidiospores (14–20 × 5–8 µm) (Bernicchia & Gorjón 2010); C. ladoi is distinguished from C. yunnanensis by small basidiospores (5.5–7.5 × 3.5–4.5 µm) (Bernicchia & Gorjón 2010).
description: Published as part of Yang, Yang, Li, Rong, Liu, Chaomao & Zhao, Changlin, 2023, Morphological and molecular identification for two new species of woodinhabiting macrofungi (Basidiomycota) from Yunnan-Guizhou Plateau, China, pp. 1-18 in Phytotaxa 591 (1) on pages 7-10, DOI: 10.11646/phytotaxa.591.1.1, http://zenodo.org/record/7784136