Leaves mostly 3-foliolate, the upper ones 1-foliolate; leaflets 10–30 × 2–10 mm, mostly linear-oblanceolate to oblong-oblanceolate, the lower ones sometimes more obovate, glabrous or nearly so above, finely appressed pubescent beneath; petiole 4–20 mm long; stipules 0.
Racemes 6–15(30) cm long, lax or upper part dense, main ones 16–40-flowered, other short racemes and clusters of flowers in the axils below; bracts 2–3 mm long, linear, shorter than the pedicel; bracteoles on upper part of the pedicel, setaceous.
Standard elliptic-obovate, yellow, often veined reddish-brown, pubescent medially and apically outside; wings shorter than the keel; keel 8–11 mm long, angular, with a narrow twisted beak, slightly incurved at the tip.
Erect annual, 30–70 cm tall, developing ascending branches from the base and ultimately many short flowering branches near the top; stem slender, appressed pubescent.
Calyx 4–5 mm long, appressed pubescent; upper lobes attenuate-triangular, c. 2–3 times as long as the tube.
Pods subsessile, 4–6 × 4 mm, subglobose-ovoid, slightly pointed, appressed pubescent, 2-seeded.
Seeds 2–3 mm long, rounded-cordiform, smooth, with a prominent aril.