Sonchus pustulatus, Willk.

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 : 328

8. S. pustulatus Willk. in Willk. & Lange, Prodr. FI. Hisp. 2: 242 (1865).

Perennial; stem 15-30 cm, branched, woody and with greyish-yellow bark below. Lower leaves few, the upper grouped below inflorescence, white-tomentose at base, pinnatisect, with ovate to elliptical, entire lobes. Involucral bracts c. 24. Ligules about twice as long as corolla-tube. Achenes 3-5-5 x 1 -5 mm, narrowly rectangular or more or less elliptical, often curved, slightly rugose between the ribs; pappus c. 8 mm, most of the long hairs deciduous and the short cottony ones persistent. Calcareous rocks. S.E. Spain (near Almeria). Hs. (N. W. Africa.)