Centaurea calcitrapa subsp. horrida Arcang., Comp. Fl. Ital.: 396. 1882
Centaurea calcitrapa subsp. horrida, Comp. Fl. Ital.: 396. 1882
is new name for Centaurea horrida, Index Sem. Hort. Bot. Neapol. 1829: 15. 1829–1830
Centaurea calcitrapa subsp. horrida, Comp. Fl. Ital.: 396. 1882