Astragalus angustifolius subsp. angustifolius

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 : 119

(a) Subsp. angustifolius :

Leaves 2-5-4 cm, the rhachis not strongly pungent. Peduncles equalling or shorter than leaves; racemes with 3-8 flowers. Throughout the range of the species.