Podospermum purpureum (L.) W.D.J.Koch & Ziz [ Scorzonera purpurea L.]
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Podospermum purpureum (L.) W.D.J.Koch & Ziz [ Scorzonera purpurea L.] [Compositae]
J.B.P.A. de Monet de Lamarck, J.L.M. Poiret, Tabl. Encycl., vol. 3 (tt, 501-750): t. 647, fig. 3 (1823) [Marechal]