Basionym Name:Boletus irregularis Sowerby, Col. fig. Engl. Fung. Mushr., Suppl. (London)(no. 30 [no. 3 of suppl.]): tab. 423 (1814)
Homotypic synonyms:Bjerkandera irregularis (Sowerby) P. Karst., Bidr. Känn. Finl. Nat. Folk 48: 301 (1889)