Astragalus (Tragacantha), Bunge. Perennials

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 : 117

Subgen. Tragacantha Bunge. Perennials , woody at the base; hairs simple. Leaves paripinnate, the rhachis ending in a sharp spine; stipules adnate to petiole for at least | their length, but free from each other. Flowers in dense, sessile racemes in the axils of leaves, partly concealed by the stipules, usually confined to the middle of the stem. Calyx not inflated in fruit, hidden by its dense, villous indumentum, the teeth splitting to the base in fruit. Legume c. 5 mm, ovoid-ellipsoid, villous.