Synonyms: Hieracium creperiforme (heterotypic); Hieracium godbyense (heterotypic); Hieracium griseellum (homotypic); Hieracium hoglandicum (heterotypic); Hieracium hoglandicum f. humosum; Hieracium laevigatum godbyense (heterotypic); Hieracium laevigatum mixopolium (homotypic); Hieracium mixopolium (homotypic); Hieracium norvegicum hoglandicum (heterotypic); Hieracium rigidum glareosum (homotypic); Hieracium rigidum godbyense (heterotypic); Hieracium rigidum griseellum; Hieracium rigidum mixopolium (homotypic)