Centaurea nigrescens subsp. serotina (Dubois) Nyman, Consp. Fl. Eur.: 421. 1879
Centaurea nigrescens subsp. serotina, Consp. Fl. Eur.: 421. 1879
is new combination for Rhaponticum serotinum, Méth. Eprouv.: 402. 1803
Centaurea nigrescens subsp. serotina, Consp. Fl. Eur.: 421. 1879