@ARTICLE{TreeBASE2Ref29777, author = {Lynn Delgat and R?gis Courtecuisse and Eske De Crop and Felix Hampe and Tina Antje Hofmann and Cathrin Manz and Meike Piepenbring and M?lanie Roy and Annemieke Verbeken}, title = {Lactifluus (Russulaceae) diversity in Central America & the Caribbean: melting pot between realms}, year = {2019}, keywords = {Basidiomycota, ectomycorrhizal fungi, Middle America, French West Indies, integrative taxonomy}, doi = {}, url = {http://}, pmid = {}, journal = {Persoonia}, volume = {}, number = {}, pages = {}, abstract = {Species of the ectomycorrhizal genus Lactifluus, and often even entire sections, are typically unique to a single continent. Given these biogeographic patterns, an interesting region to study their diversity is Central America and the Caribbean, since it is a part of the North American continent, but biogeographically belongs to the Neotropical realm. Based on a thorough molecular analysis and morphological study, this study shows that Central America, Mexico and the Caribbean harbour at least 35 Lactifluus species, of which 33 were never reported outside of this region. It was found that species from the Caribbean generally show affinities to South American taxa, while species from the Central American mainland generally show affinities to Northern hemispheric taxa. We hypothesise that host specificity and/or climate play a crucial role in these different origins of diversity. Because of this, Caribbean islands harbour a completely different Lactifluus diversity than the Central American mainland. The majority of species occurring on the islands can be considered endemic to certain islands or island groups. In this paper, detailed morphological descriptions are given, with a focus on the unique diversity of the islands, and identification keys to all hitherto described Lactifluus species occurring in Central America and the Caribbean are provided. One new section, Lactifluus sect. Nebulosi, and three new species, Lactifluus guadeloupensis, Lactifluus lepus and Lactifluus marmoratus are described.} }

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