Basionym Name:Boletus ignoratus Banning & Peck, in Peck, Ann. Rep. Reg. N.Y. St. Mus. 44: 185 (1891)
Homotypic synonyms:Suillus ignoratus (Banning & Peck) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 535 (1898)