Lupinus luteus, 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 : 105

1. L. luteus L. , Sp. Pl. 722 (1753).

Hairy annual 25-80 cm. Leaflets 40-60 x 8-12 mm, obovate-oblong, mucronate, sparsely villous; stipules dimorphic, those of the lower leaves 8 mm, subulate, those of the upper leaves 22-30 x 2-4 mm, linear-obovate. Racemes 5-16 cm; flowers regularly verticillate, scented; peduncle 4-12 cm. Upper lip of calyx 6-7 mm, 2-partite, the lower 10 mm, shallowly 3-dentate. Corolla 13-16 mm, bright yellow. Legume 40-50x10 mm, densely villous, black. Seeds 4-6, 6-8 x 4-5-6*5 mm, orbicular-quadrangular, compressed, smooth and dull, black marbled with white, with a white curved line on each side. Light, acid soils. Iberian peninsula, Italy and islands of W. Mediterranean. Widely cultivated elsewhere for fodder and green manure, and sometimes naturalized. Co Hs It Lu Sa Si [Az Be Bu Cz Ga Ge Ho Hu Ju Po Rm Rs (C, W)].