Synonyms: Hieracium atratum chalybaeum; Hieracium bifidum chalybaeum; Hieracium chalybaeum (heterotypic); Hieracium costeanum (homotypic); Hieracium flexile (heterotypic); Hieracium glaucinum sagittibifidum; Hieracium oporiniforme; Hieracium pallidum costeanum (homotypic); Hieracium planchonianum var. chalybaeum; Hieracium planchonianum var. oporiniforme; Hieracium planchonianum var. subflexible; Hieracium praecox sagittibifidum (homotypic); Hieracium praecox var. dolichellum; Hieracium sagittibifidum (homotypic); Hieracium schmidtii costeanum; Hieracium subflexile (heterotypic); Hieracium wiesbaurianum planchonianum (homotypic); Hieracium wiesbaurianum subflexible