Cortinarius subgenus Callistei in North America and Europe—type studies, diversity, and distribution of species

Abstract

Five species of Cortinarius subgenus Callistei, are recognized in Europe and North America. Cortinarius callisteus, C. infucatus, and C. neocallisteus sp. nov. have a broad distribution, extending from western North America to Europe. Cortinarius tofaceus is known from eastern North America and Europe, while C. callistei sp. is known only from one locality in Sweden. All five species are primarily associated with coniferous trees. Previously the species were included either in subgenus Leprocybe or subgenus Cortinarius, but recently they have been separated into subgenus Callistei based on molecular data. Type specimens of the names associated with this subgenus were studied and a neotype proposed for C. tofaceus and an epitype for C. infucatus. Barcodes for the species are deposited in RefSeq and UNITE.

• Agaricales
• Cortinariaceae
• ectomycorrhiza
• ITS
• molecular systematics
• taxonomy

Acknowledgments

We acknowledge Bálint Dima for molecular work of several specimens and Laura Martínez-Suz and William Rimington for re-sequencing the type specimen of C. croceicolor. We thank Paul Kirk for the help with nomenclature. We are grateful to the curators of H, MICH, NY, and PC. This work was partially supported by the Ministry of Environment, Finland ( YM38/5512/2009) and Oskar Öflunds Stiftelse.