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| a, b Cortinarius laccariphyllus; c, d Cortinarius neotorvus & e, f Cortinarius subfuscoperonatus in Xie, Wei, Fu, ... et Li, 2020. Photographs by Meng-Le Xie. |
Abstract
Cortinarius is an important ectomycorrhizal genus that forms a symbiotic relationship with certain trees, shrubs and herbs. Recently, we began studying Cortinarius in China and here we describe three new species of Cortinarius subg. Telamonia based on morphological and ecological characteristics, together with phylogenetic analyses. Cortinarius laccariphyllus sp. nov. (section Colymbadini) is associated with broadleaf trees, with strongly hygrophanous basidiomata, special Laccaria-like lamellae and white and extremely sparse universal veil. Cortinarius neotorvus sp. nov. (section Telamonia) is associated with broadleaf trees and is easily confused with C. torvus, but can be distinguished by the colour of the fresh basidiomes and the stipe usually somewhat tapering towards the base. Cortinarius subfuscoperonatus sp. nov. (section Fuscoperonati) is associated with coniferous trees, with subglobose to broadly ellipsoid spores and is closely related to C. fuscoperonatus. A key to the new species and similar species in sections Colymbadini, Telamonia and Fuscoperonati is provided.
Keywords: Ectomycorrhizal fungi, morphology, phylogeny, taxonomy
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| Figure 2. Basidiocarps of three newly-described species. a, b Cortinarius laccariphyllus (a, b HMJAU44449, holotype); c, d Cortinarius neotorvus (c HMJAU44441, holotype; d HMJAU44439); e, f Cortinarius subfuscoperonatus (e HMJAU44444, holotype; f HMJAU44445). Scale bars: 2 cm (a, b, d–f). Photographs by Meng-Le Xie. |
Meng-Le Xie, Tie-Zheng Wei, Yong-Ping Fu, Dan Li, Liang-Liang Qi, Peng-Jie Xing, Guo-Hui Cheng, Rui-Qing Ji and Yu Li. 2020. Three New Species of Cortinarius subgenus Telamonia (Cortinariaceae, Agaricales) from China. MycoKeys. 69: 91-109. DOI: 10.3897/mycokeys.69.49437