Scorzonera, Less. Leaves

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 321

Sect. LASiospoRA Less. Leaves entire. Achenes densely villous or lanate, with smooth ribs, without a tubular base.