 In 1959, mycologists Rolf Singer, Snell and Esther A. Dick transferred the species to "Boletellus", explaining that the microstructure of the trama and the faint ornamentation of the spores were inconsistent with placement in "Xerocomus".American mycologist Harry D. Thiers, in his 1976 monograph on North American boletes, claimed that he failed to consistently find ornamentation on the spores of material he collected, and preferred to retain the species in "Boletus".In 2011, it was moved to the genus "Xerocomellus.