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KMID : 1160220210490040308
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Mycobiology
2021 Volume.49 No. 4 p.308 ~ p.345
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Taxonomic Revision of the Genus Lactifluus (Russulales, Basidiomycota) of South Korea
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Lee Hyun
Wissitrassameewong Komsit
Park Myung-Soo
Fong Jonathan J.
Verbeken Annemieke
Kim Chang-Mu
Lim Young-Woon
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Abstract
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Lactifluus (Pers.) Roussel is an ectomycorrhizal genus that was recently recognized to be distinct from the genus Lactarius. To date, 226 Lactifluus species have been reported worldwide. Misidentification of Lactifluus species is common because of intraspecific morphological variation, cryptic diversity, and the limited number of taxonomic keys available. Molecular data are indispensable for species delimitation; a multilocus phylogenetic analysis showed that most Asian Lactifluus species are not conspecific with morphologically similar species present on other continents. In particular, Korea has misused European and North American Lactifluus names. In this study, we evaluated the taxonomy of Lactifluus in Korea using both morphological and multilocus molecular (ITS, nrLSU, rpb1, and rpb2) data. We examined 199 Lactifluus specimens collected between 1980 and 2016, and a total of 24 species across the four Lactifluus subgenera were identified. All Korean species are distinct and clearly separated from European and North American species. Five taxa corresponded to previously described species from Asia and the remaining 19 taxa are confirmed as new species. Herein, we provide keys to the Korean Lactifluus species within their subgenera, molecular phylogenies, a summary of diversity, and detailed description of the new species.
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KEYWORD
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Milkcap, diversity, multilocus phylogeny, species delimitation
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