suffruticose, suberect, much-branched, glabrescent; leaflets linear-lanceolate or oblong, rigid, mucronate, glabrous; stipules and stipellæ shortly-subulate, rigid; peduncles longer than the leaves, 2–4 flowered at the summit; calyx campanulate, its lobes very short, broad, and blunt, the two uppermost connate; carina falcate, round-topped; legumes linear, margined, glabrous, tipped with the long, persistent style. Erect or ascending, many-stemmed, 1–3 feet high, very rigid, when young thinly pubescent, quite glabrous when adult. Stipules 1 1/2 line long, triangular. Petioles 1/2–1 inch long, erect. Leaflets varying from very narrow, linear-lanceolate, acute, to broadly oblong, obtuse, 1 1/2–2 inches long, 3–5 lines wide, full green. Peduncles long or short, subumbellately few-flowered. Flowers purple. Calyx bibracteolate at base, 2 lines long, the lobes broader than their length. Vexillum 7 lines long and wide. Legume 2–3 inches long, 2–3 lines wide, with ridged sutures and a long, yellow persistent style.
