Ptilostemon casabonae (L.) Greuter [ Carduus casabonae L.]
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Ptilostemon casabonae (L.) Greuter [ Carduus casabonae L.] [Compositae]
A. Munting, Naauwk. Beschr. Aardgewassen, vol. 1 : p. 452, t. 126 (1696)