Hieracium gracile var. densifloccosum (Zahn) Cronquist
Hieracium gracile var. densifloccosum (Zahn) Cronquist is a synonym sensu FNA Ed. Comm., 2006a of:
Pilosella tristis (Willdenow ex Sprengel) F.W. Schultz & Schultz Bipontinus, an accepted species name.