Carduus defloratus subsp. medius (Gouan) Bonnier, Fl. Ill. France 6: 36. 1923
Carduus defloratus subsp. medius, Fl. Ill. France 6: 36. 1923
is new combination for Carduus medius, Ill. Observ. Bot.: 62. 1773
Carduus defloratus subsp. medius, Fl. Ill. France 6: 36. 1923