Ptilostemon casabonae (L.) Greuter [ Carduus casabonae L.]
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Ptilostemon casabonae (L.) Greuter [ Carduus casabonae L.] [Compositae]
J. Barrellier, Pl. Galliam Hispaniam Italiam Obs.: t. 1208-1211, fig. 1211 (1714)