Bupleurum rotundifolium, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 346

1. B. rotundifolium L. , Sp. Pl. 236 (1753) .

Erect, glaucous, often purple-tinged annual 15-75 cm. Leaves elliptic-ovate to suborbicular, obtuse, often mucronate. Rays (3-)5-10, often somewhat thickened at base and apex. Bracteoles 5-6, oblanceolate to ovate or obovate, acuminate, shortly connate at base, yellowish-green and patent in flower, becoming whitish and connivent in fruit; veins conspicuous. Fruit 3-3-25 mm, ellipticoblong, blackish-brown, smooth; ridges filiform. Arable land and other dry, open habitats. C. & S. Europe and U.S.S. R. southwards from c. 52° N, but absent from many o f the islands. Al Au Be Bu Co Cz Ga Ge G r He Hs Hu It Ju Po Rm Rs (?B, C, W, K, E) Sa Tu [Br Ho].