Hieracium triste subsp. gracile (Hooker) Calder & Roy L. Taylor
Hieracium triste subsp. gracile (Hooker) Calder & Roy L. Taylor is a synonym sensu FNA Ed. Comm., 2006a of:
Pilosella tristis (Willdenow ex Sprengel) F.W. Schultz & Schultz Bipontinus, an accepted species name.