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An emended subgenus Myxacium in the light of a global Cortinarius (Agaricales) phylogeny

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Abstract

Cortinarius subgenus Myxacium has been used since the times of Elias Fries to denote a large group of species characterized by a viscid universal veil. In molecular studies during the past decades, the subgenus was shown to be polyphyletic. In this study, we emend the circumscription of the subgenus, taking into consideration recent research involving taxa from both hemispheres. Known sections of myxacioid taxa are discussed, identifying those that remain in the subgenus and those that do not. A new Myxacium species Cortinarius vitreopallidus from New Zealand is described, and the genus Quadrispora is recombined as a section in Cortinarius subg. Myxacium.

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Data availability

The alignments and trees are deposited in TreeBase (https://treebase.org/treebase-web/home.html) under ID 26698. New sequences are deposited in GenBank (https://www.ncbi.nlm.nih.gov) as specified in Table 1.

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Acknowledgments

We thank Joseph F. Ammirati for his valuable comments, and Jesko Kleine for clarifying a few nomenclatorial issues. Jerry A. Cooper is thanked for contributing fungal material and data. We thank PDD and OTA herbaria for collections and sequencing.

Funding

The work of Bálint Dima was partly supported by the ELTE Institutional Excellence Program financed by the National Research, Development, and Innovation Office (NKFIH-1157-8/2019-DT) in Hungary.

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Authors and Affiliations

  1. Department of Botany, Honorary Research Associate, Swedish Museum of Natural History, Stockholm, Sweden

    Karl Soop

  2. Department of Botany, University of Otago, PO Box 56, Dunedin, 9054, New Zealand

    Andy R. Nilsen & David A. Orlovich

  3. Department of Plant Anatomy, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary

    Bálint Dima

Authors
  1. Karl Soop
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  2. Andy R. Nilsen
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  4. Bálint Dima
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Contributions

A. Nilsen and D. Orlovich contributed fungal material and sequences and performed part of the initial analysis; B. Dima performed part of the sequencing and the final phylogenetic analysis, and wrote the “Materials and methods” section; K. Soop performed the conceptual design and preliminary phylogenetic analyses, and wrote the bulk of the manuscript.

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Correspondence to Karl Soop.

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Soop, K., Nilsen, A.R., Orlovich, D.A. et al. An emended subgenus Myxacium in the light of a global Cortinarius (Agaricales) phylogeny. Mycol Progress 20, 247–260 (2021). https://doi.org/10.1007/s11557-020-01665-6

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