Shrub or small tree, to c. 7 m tall; bark smooth, grey-brown; branchlets angular or flattened, glabrous or with appressed hairs; new growth yellow. Leaves bipinnate, dull green; rachis 1–4 cm long, with short, appressed hairs, glands at the junction of each pinna pair and sometimes 1 or more between successive pairs; pinnae in 2–8 pairs, with gland at base; pinnules in 10–30 pairs, crowded to well-spaced, linear to oblong, 3.5–10 mm long, 0.5–1 mm wide, within a single pinna more or less equal in length, hairy or glabrous, apex mostly obtuse to truncate. Inflorescence a raceme or panicle; heads globular, 15–30-flowered, pale yellow, peduncles c. 5 mm long, hairy. Pod more or less straight, flattish, 6–13 cm long, 6–9 mm wide, usually constricted between seeds, dark brown to blackish, hairy at least when young.
Wim, VRiv, Gold, CVU, NIS, EGU, MonT, VAlp.
