Centaurea jacea subsp. ×pratensis (W.D.J. Koch) Celakovsky
Centaurea jacea subsp. ×pratensis (W.D.J. Koch) Celakovsky is a synonym sensu FNA Ed. Comm., 2006a of:
Centaurea ×moncktonii C.E. Britton, an accepted species name sensu FNA Ed. Comm., 2006a.