Onopordum caulescens subsp. caulescens

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 : 246

(a) Subsp. caulescens :

Stem-wings up to 10 mm wide. Leaflobes lanceolate-oblong, entire or rarely with 1 -2 pairs of basal teeth. Capitula ovoid-globose; involucral bracts gradually narrowing to a spiny process 25-35 mm, the lower bracts arachnoid-hairy. • Kikladhes.