Leaves 1-foliolate above, 3-foliolate below; leaflets 10–35 × 1–11 mm, linear-oblanceolate to oblong-lanceolate or oblong-elliptic, densely silky pubescent beneath; petiole 2–15 mm long; stipules 0.
Standard elliptic-obovate, yellow, lined reddish-brown, tomentellous outside; wings nearly as long as the keel; keel 5.5–6 mm long, angular, with a narrow twisted beak sharply incurved at the tip.
Calyx 4–4.5 mm long, tomentellous; upper lobes broadly triangular-acuminate, 1.5–2 times as long as the tube.
Erect annual 30–65 cm tall, with slender ascending densely silvery appressed pubescent branches.
Pod sessile, 4.5–5 × 4 mm, ovoid-globose, silky pubescent, 2-seeded.
Seeds 2.5 mm across, oblique-cordiform.