Catananche caerulea L.
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Catananche caerulea L. [Compositae]
H.G.L. Reichenbach, Icon. Fl. Germ. Helv., vol. 19(1): (Die Cichoriaceen, Ambrosiaceen, Campanulaceen, Lobeliaceen dazu die Cucurbitaceen der deutschen Flora ): t. 1363, fig. 1 (1860) [H.G. Reichenbach]