Punctulariopsis yunnanensis, Muhammad & Deng & Dai & Su & Zhao, 2024

Muhammad, Akmal, Deng, Yinglian, Dai, Yunfei, Su, Jiangqing & Zhao, Changlin, 2024, Phylogenetic and taxonomic evidence reveal Punctulariopsis yunnanensis sp. nov. (Punctulariaceae, Basidiomycota) from southwest China, Phytotaxa 663 (2), pp. 59-68 : 63

Punctulariopsis yunnanensis A. Muhammad & C.L. Zhao, sp. nov. ( Figs. 2 , 3 )

MycoBank no.: MB 853715

Etymology: — yunnanensis (Lat.) refers to the type location “ Yunnan Province, China ”.

Holotype: — CHINA. Yunnan Province, Lijiang, Lashihai Nature Reserve, International Wetland Park, Meiquan Village E 100°14′78′′, N 26°86′63′′, alt. 2437 m, on the fallen branch of the angiosperm, on July 19 2021, CLZhao 21443 ( SWFC).

Basidiomata: —Annual, resupinate, adnate but easily separable, gelatinous when fresh, becoming rigid upon drying, up to 15 cm long, up to 3.5 cm wide, 100–200 µm thick. Hymenial surface smooth, white to cream when fresh, turned cream to pinkish buff to salmon upon drying. Sterile margin narrow, white, up to 1 mm.

Hyphal structure: —Hyphal system monomitic; generative hyphae colorless, thick-walled, with clamp connections, IKI-, CB-; tissues unchanged in KOH. Subiculum almost absent or indistinct, subhymenial generative hyphae colorless, more or less interwoven, thin-walled, rarely branched, 2.6–3.5 µm in diameter, crystals present among generative hyphae.

Hymenium: —Cystidia and cystidioles absent; dendrohyphidia colorless, thin-walled; basidia clavate, flexuous, with four sterigmata and a basal clamp connection, 19.5–46.9 × 5–9.1 µm; basidioles dominant, in shape similar to basidia, but slightly smaller.

Spores: —Basidiospores broadly ellipsoid, thin-walled, smooth, IKI-, CB-, (7.6–)7.8–12.8(–13) × 6.0–9.8 µm, L = 10.11 µm, W = 8 µm, Q = 1.22–1.39 (n = 270/9).

Additional examined specimens (paratypes): — CHINA. Yunnan Province, Lijiang, Lashihai Nature reserve , International Wetland Park, Meiquan Village, E 100°14′78′′, N 26°86′63′′, alt. 2437 m, on the fallen branch of angiosperm, 19 July 2021, CLZhao 21333, and CLZhao 21393 ( SWFC) ; Lijiang, Heilongtan Park, Xiangshan, E 100°24′47′′, N 26° 8944′10′′, alt. 2384 m, CLZhao 21561, CLZhao 21683, and CLZhao 21718 ( SWFC) ; Qujing, Qilin District , Cuishan Forest Park, E 103°70′76′′, N 25°55′52′′, alt. 1875 m, on the fallen branch of angiosperm, 5 November 2022, CLZhao 26172, CLZhao 26282, and CLZhao 26691 ( SWFC) ; Qujing, Zhanyi District, Lingjiao Town , Xiajia Village, E 103°67′72′′, N 25°88′48′′, alt. 1859 m, on the fallen branch of angiosperm, 6 March 2023, CLZhao 27244 ( SWFC) ; Qujing, Zhanyi District, Dapo Town , Tulo Village, E 103°66′98′′, N 25°68′02′′, alt. 1859 m, on the fallen branch of Pyrus xerophila , 7 March 2023, CLZhao 27435, CLZhao 27441, CLZhao 27446, CLZhao 27449, CLZhao 27452, and CLZhao 27484 ( SWFC) ; Zhaotong, Yiliang County, Xiaocaoba Town , Wumengshan National Nature Reserve, E 104°25′66′′, N 27°77′10′′, alt. 1700 m, on the fallen branch of angiosperm, 13 July 2023, CLZhao 29618, CLZhao 29620, and CLZhao 29632 ( SWFC), 20 September 2023, CLZhao 31803, CLZhao 31907, CLZhao 33481, CLZhao 33616, CLZhao 33676, CLZhao 33695, CLZhao 33710, and CLZhao 33713 ( SWFC) .

Figures

FIGURE 2. Basidiomata of Punctulariopsis yunnanensis (holotype). Bars: A = 1 cm, B = 1 mm.

FIGURE 3. Microscopic structures of Punctulariopsis yunnanensis (drawn from the holotype). A: basidiospores. B: basidia. C: basidioles. D: a section of hymenium. Bars: A = 5 μm, B–D = 10 μm.