Onopordum, Franco

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 : 247

Sect. Recurvata Franco . Plant with unicellular hairs. Leaves not reticulately veined beneath. Involucral bracts wide, flat, acuminate, shorter than florets, the outer and lower middle usually strongly deflexed in the apical 1-$. Corolla-lobes glandular. Pappus-hairs scabrid or shortly plumose.