Journal
MYCOLOGIA
Volume 108, Issue 2, Pages 363-380Publisher
TAYLOR & FRANCIS INC
DOI: 10.3852/15-072
Keywords
biogeography; boletes; new taxa; systematics; taxonomy
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Funding
- National Natural Science Foundation of China [31210103919, 31360008]
- Key Laboratory for Plant Diversity and Biogeography of East Asia, KIB, CAS [KLBB 201303]
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Species of the genus Retiboletus (Boletaceae, Boletales) in China are investigated based on morphology and phylogenetic analyses of DNA sequences from nuc rDNA internal transcribed spacer (ITS) and partial 28S regions and sequences from the translation elongation factor 1-a gene (tef1a). Six lineages are recovered among the collections studied. Five of these are documented and presented in the present paper, including three new species and two new combinations. The remaining species is not described due to the paucity of material. The specimens from China identified as R. ornatipes or R. retries are in fact R. sinensis or R. kauffmanii, those labeled R griseus are either R fuscus or R pseudogriseus. A key to all known taxa of the genus is provided. Phylogenetic relationships of taxa within Retiboletus are partially resolved. A preliminary biogeographical analysis shows that allied species of Retiboletus between eastern Asia and North/Central America are common but there are no Retiboletus species common to both continents. Species of Retiboletus in Japan and southern China are conspecific or closely related.
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