felleus" is the type species of "Tylopilus", and the only member of the genus found in Europe.Synonyms include "Boletus alutarius", described by Elias Magnus Fries in 1815 and later by Friedrich Wilhelm Gottlieb Rostkovius in 1844, and Paul Christoph Hennings's subsequent transfer of Fries's taxon into "Tylopilus", "T. alutarius".