Rhaponticum acaule (L.) DC. [ Cynara acaulis L.]
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Rhaponticum acaule (L.) DC. [ Cynara acaulis L.] [Compositae]
J.B.P.A. de Monet de Lamarck, J.L.M. Poiret, Tabl. Encycl., vol. 3 (tt, 501-750): t. 663, fig. 2 (1823) [J.H. de Seve]