Cortinarius subgenus Leprocybe, unexpected diversity and significant differences in species compositions between western and eastern North America

J Ammirati; K Liimatainen; D Bojantchev; U Peintner; R Kuhnert-Finkernagel; C Cripps; B Dentinger; T Niskanen

doi:10.3767/persoonia.2021.46.08

Cortinarius subgenus Leprocybe, unexpected diversity and significant differences in species compositions between western and eastern North America

Persoonia. 2021 Jun:46:216-239. doi: 10.3767/persoonia.2021.46.08. Epub 2021 May 27.

Authors

J Ammirati¹, K Liimatainen², D Bojantchev³, U Peintner⁴, R Kuhnert-Finkernagel⁴, C Cripps⁵, B Dentinger⁶, T Niskanen²

Affiliations

¹ Department of Biology, Box 351800, University of Washington, Seattle, WA 98195-1800, USA.
² Jodrell Laboratory, Royal Botanic Gardens, Kew, Surrey TW9 3AB, United Kingdom.
³ 345 Shipwatch Lane, Hercules, CA 94547, USA.
⁴ University Innsbruck, Institute of Microbiology, Technikerstraße 25, 6020 Innsbruck, Austria.
⁵ Plant Sciences & Plant Pathology Department, 119 Plant Biosciences Building, Montana State University, Bozeman MT 59717-3150, USA.
⁶ Natural History Museum of Utah, University of Utah, 257 South 1400 East, Salt Lake City, Utah 84112, USA.

Abstract

The focus of this paper is the North American species of Cortinarius in subg. Leprocybe. Eighteen species, including twelve new ones, and two tentative (aff.) species, are delimited based on morphological and molecular data (DNA ITS-LSU sequences). Existing type specimens of species in subg. Leprocybe were also studied, and neo- or epitypes designated for C. cotoneus, C. melanotus, C. phrygianus and C. venetus to stabilize the nomenclature. In addition, to improve the infrasubgeneric classification of Leprocybe three new sections are proposed: sect. Fuscotomentosi, sect. Melanoti and sect. Squamiveneti. This study adds substantial information to the knowledge of subg. Leprocybe in North America against a background of European species. To date only two species, C. phrygianus and C. squamivenetus have been reported from both continents. Citation: Ammirati J, Liimatainen K, Bojantchev D, et al. 2021. Cortinarius subgenus Leprocybe, unexpected diversity and significant differences in species compositions between western and eastern North America. Persoonia 46: 216-239. https://doi.org/10.3767/persoonia.2021.46.08.

Keywords: Agaricales; Cortinariaceae; Europe; ITS; North America; barcodes; ectomycorrhiza.