Genus
Butyriboletus (Butter boletes)
Butyriboletus autumniregius. Photo: (c) noah_siegel, some rights reserved (CC BY-NC-SA)
Butyriboletus is a genus of fungi in the family Boletaceae. The genus was circumscribed in 2014 by mycologists David Arora and Jonathan L. Frank to accommodate “butter bolete” species that were shown by molecular analysis to be phylogenetically distinct from Boletus. Butyriboletus contains 21 ectomycorrhizal species found in Asia, Europe, North America and north Africa.
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