Many mycologists did not originally recognize the distinction between the two genera and placed Xerocomus taxa in genus Boletus.

Other former Xerocomus species have since been moved to Aureoboletus, Imleria, Hortiboletus and Rheubarbariboletus.

[3][4][5] Ladurner and Simonini published a monograph on Xerocomus in 2003,[6] but this predated the taxonomical revisions based on phylogenetic inferences.

More recent phylogenies have confirmed Xerocomus as monophyletic in its new restricted arrangement.

[8] Most members of Xerocomus are edible, though of mediocre gastronomical value and inferior to the sought-after porcini.