Cirsium flavispina, Boiss. ex DC.

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 : 242

58. C. flavispina Boiss. ex DC. , Prodr. 7: 305 (1838).

Biennial 30-100 cm, with fibrous roots. Stems much-branched above the middle, spiny-winged up to about the middle. Leaves coriaceous, undulate, oblong-lanceolate to broadly oblong, lobed to pinnatifid, sparsely arachnoid-lanate above, arachnoid-lanate to -tomentose beneath, the lower long-decurrent, the upper shortly decurrent; segments triangular to linear-triangular, dentate, with very stout spines (6-)8-12(-20) mm. Capitula 3—8(— 12), crowded at apex, sessile or shortly pedunculate, rarely solitary and long-pedunculate. Involucre 10-16 x 7-16 mm; bracts erect, with conspicuous vittae and patent, pungent spine 1—2(—4) mm; outer obtuse; middle acute; inner without appendage. Corolla 14-18 mm, purple. Achenes 3-4 mm; pappus 11-14 mm. Wet places. C., E. & S. Spain, N. Portugal. Hs Lu.