Synonyms: Hieracium aspericaule; Hieracium boreale obliquum (homotypic); Hieracium boreale var. aspericaule; Hieracium boreale var. flagellosum; Hieracium boreale var. indolatum; Hieracium boreale var. obliquum; Hieracium flagellosum (homotypic); Hieracium indolatum; Hieracium obliquum (homotypic); Hieracium obliquum var. aspericaule; Hieracium obliquum var. flagellosum; Hieracium obliquum var. indolatum; Hieracium rigidum indolatum; Hieracium sabaudum f. aspericaule; Hieracium sabaudum f. flagellosum; Hieracium sabaudum var. aspericaule; Hieracium sabaudum var. indolatum