New genera, species, and combinations of Boletaceae from Brazil and Guyana

ABSTRACT

Brasilioporus olivaceoflavidus, gen. et sp. nov., Brasilioporus simoniarum, sp. nov., Neotropicomus australis, gen. et sp. nov., and Nevesoporus nigrostipitatus, gen. et sp. nov. (Boletaceae, Boletales, Basidiomycota), are described from the endangered Atlantic Forest biome of eastern Brazil. New combinations into these new genera are proposed for the Guyanese taxa Xerocomus parvogracilis, Tylopilus rufonigricans, and Tylopilus exiguus. Boletaceae subfamily Chalciporoideae was recircumscribed to include the new genus Nevesoporus. Molecular phylogenetic analyses using a multilocus data set (ITS+28S+TEF1+RPB1+RPB2) from a large taxon set across the Boletaceae justify recognition of the new genera. Morphological, ecological, and DNA sequence data are provided for the new species. A key to known native and introduced bolete species from the Brazilian Atlantic Forest is provided.

KEYWORDS:

• Agaricomycetes
• Boletales
• boletes
• multilocus phylogeny
• Neotropics
• taxonomy
• 10 new taxa

ACKNOWLEDGMENTS

We are grateful to Dr. Tatiana T. S. Chies for supporting molecular work in the Molecular Systematic Laboratory, Universidade Federal do Rio Grande do Sul and to the herbaria INPA, PACA, ICN, VIES, FLOR for loaning reference material for the study and facilitating deposition of specimens. We acknowledge Rafael Trevisan and MycoBank staff for reviewing the proposed Latin names.

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

SUPPLEMENTARY MATERIAL

Supplemental data for this article can be accessed on the publisher’s Web site.

Additional information

Funding

This work was supported by the National Geographic Society Committee for Research and Exploration (6679-99, 7435-03, and 8481-08); U.S. National Science Foundation (DEB-0918591and DEB-1556338); and Conselho Nacional de Desenvolvimento Científico e Tecnológico (301874/2015-8). A doctoral fellowship was provided to A. C. Magnago by the Conselho Nacional de Desenvolvimento Científico e Tecnológico—Brasil (CNPq) and to G. Alves-Silva by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES, Financial Code 001). R. M. B. Silveira thanks CNPq for funding (process no. 301874/2015-8).