Basionym Name:Polyporus squalidus Fr., Linnaea 5: 517 (1830)
Homotypic synonyms:Fomes squalidus (Fr.) Sacc., Syll. fung. (Abellini) 6: 169 (1888)Scindalma squalidum (Fr.) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 519 (1898)