Cirsium costae (Sennen & Pau) Petr. in Biblioth. Bot. 78: 41. 1912
Cirsium costae in Biblioth. Bot. 78: 41. 1912
is new combination for Cirsium ferox var. costae in Bull. Assoc. Pyrén. Échange Pl. 17: 8. 1907
Cirsium costae in Biblioth. Bot. 78: 41. 1912