Current Name:Boletus firmus Frost, Bull. Buffalo Soc. nat. Sci. 2: 103 (1874)
Synonymy:Boletus firmus Frost, Bull. Buffalo Soc. nat. Sci. 2: 103 (1874)Suillus firmus (Frost) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 535 (1898)
Position in classification:Boletaceae, Boletales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi