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| [A-B] Leucoinocybe danxiashanensis Ming Zhang, T.H. Li & Xiang L. Chen, [C-D] L. haizhuensis Ming Zhang, C.X. Fan & W.X. Xia, in Xia, Wang, Chen, Sun, Fan, Li, Deng, Yue et Zhang, 2026. |
Abstract
Two new species of Leucoinocybe from southern China are described, illustrated, and compared with phenotypically similar and phylogenetically related species. Morphologically, L. danxiashanensis sp. nov. is characterized by its mycenoid basidiomata, light brown to brownish orange pileus with faintly yellow striations, decurrent lamellae, abundant lageniform to obclavate and thin-walled cystidia on pileus and stipe surface, and broadly ellipsoid to subamygdaliform basidiospores; and L. haizhuensis sp. nov. is characterized by its mycenoid basidiomata, brown, light brown to yellowish white pileus with pubescent, 2-spored basidia, ovoid, diverse cheilocystidia and elliptical to broadly elliptical basidiospores. Phylogenetic analyses based on sequences of the nuclear ribosomal large subunit (nrLSU) and the nuclear ribosomal internal transcribed spacer (nrITS) supported them as two distinct species of Leucoinocybe.
Key words: Mycenoid, new taxon, phylogeny, Porotheleaceae, taxonomy
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| Basidiomata of Leucoinocybe danxiashanensis. A. Collection GDGM 80114 (holotype); B. Collection GDGM 80184. Scale bars: 10 mm (A, B). Basidiomata of Leucoinocybe haizhuensis. A, B. Collection GDGM 102360 (holotype); C. Collection GDGM 95340; D. Collection GDGM 99420. Scale bars: 10 mm (A–D). |
Leucoinocybe danxiashanensis Ming Zhang, T.H. Li & Xiang L. Chen, sp. nov.
Leucoinocybe haizhuensis Ming Zhang, C.X. Fan & W.X. Xia, sp. nov.
Wen-Xiao Xia, Chao-Qun Wang, Xiang-Lian Chen, Rui-Hua Sun, Cun-Xiang Fan, Tai-Hui Li, Wang-Qiu Deng, Hai-Mei Yue and Ming Zhang. 2026. Two mycenoid Species of Leucoinocybe (Agaricales, Basidiomycota) from southern China. MycoKeys. 129: 325-343. DOI: doi.org/10.3897/mycokeys.129.174720 [12 Mar 2026]
