Stems suffruticose, erect, the branches glabrous, terete, glaucous, somtimes with a few weak prickles like those of S. aculeata. Leaves subsessile, rachis 2–4 in. long, sometimes densely prickly like the branches towards the base; leaflets in 15–20 pairs, linear-oblong, 1/2– 3/4 in. long, 2 lines broad; apex rounded, mucronate, texture firm, both sides glabrous and glaucous. Racemes 4–6-flowered, shorter than the leaves. Pedicels slender, glabrous, exceeding the calyx, which is 2 lines deep, the teeth deltoid, reaching a quarter of the way down. Corolla yellow, 1/2 in. deep, the standard orbicular. Pod 5–6 in. long, glabrous, narrowed into a short pedicel, the body of the pod and each of the four wings a quarter of an inch broad.
