Aster tripolium, L.

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 : 115

19. A. tripolium L. , Sp. Pl. 872 (1753)

( Tripolium vulgare Nees ).

Annual or short-lived perennial (5-)2O-6O(-115) cm. Stem erect or ascending, branched from the base upwards, often reddish, glabrous or nearly so. Leaves lanceolate to linear, moderately to strongly succulent and then more or less terete, the lower narrowed into a long petiole and semiamplexicaul, the upper sessile, with a wide base. Capitula in corymbs or panicles. Involucral bracts in 2-3 rows, oblong, subobtuse to rounded, ciliate or not. Ligules 10-30, bright blue or lilac, often absent. Pappus elongating strongly after anthesis; hairs nearly equal. Sea-coasts and saline places inland. Most of Europe. All except Az Fa He Is Sb.