Onopordum nervosum, Boiss.

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

4. O. nervosum Boiss. , Voy. Bot. Midi Esp. 2: 357 (1841).

Plant up to 270 cm. Stem yellowish, with rather dense short hairs; wings up to 20 mm wide, densely reticulate-veined, with spines up to 10 mm. Leaves up to 50 x 20 cm, oblong-lanceolate, sessile, green, with whitish veins, subglabrous above, sparsely arachnoid-hairy beneath, pinnatifid, with 6-8 pairs of lobes; lobes triangular, longer than wide, with apical spine up to 10 mm. Capitula 35-50 x 30-50 mm, conical-ovoid, subglabrous; involucral bracts 4-6 mm wide, acuminate, with a rigid apical spine up to 4 mm. Corolla 32-35 mm, pink. Achenes 4-5 mm, greyishbrown; pappus 8-10 mm. 2z/ = 34. • S. & C. Portugal, S. & C. Spain. Hs Lu.

O. glomeratum Costa , Introd. FI. Cataluna 135 (1864), from E. Spain, appears to be a hybrid between 2 and 4. It has the indumentum, narrower bracts and smaller corolla of 2, but resembles 4 in the reticulate venation of wings and leaf and in the shape of the capitulum and involucral bracts.