Centaurea dubia subsp. nigrescens (Willdenow) Hayek
Centaurea dubia subsp. nigrescens (Willdenow) Hayek is a synonym sensu FNA Ed. Comm., 2006a of:
Centaurea nigrescens Willdenow, an accepted species name sensu FNA Ed. Comm., 2006a.
Centaurea dubia subsp. nigrescens (Willdenow) Hayek is a synonym sensu FNA Ed. Comm., 2006a of:
Centaurea nigrescens Willdenow, an accepted species name sensu FNA Ed. Comm., 2006a.