Blackstonia perfoliata (L.) Huds. [ Chlora perfoliata L.]
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Blackstonia perfoliata (L.) Huds. [ Gentiana perfoliata L.] [Gentianaceae]
A. Fiori, G. Paoletti, Iconogr. Fl. Ital.: p. 338, t. 2749, fig. 8 (1895-1904)