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Leaflets 3, 1.5–9 × 1.5–2.5 cm, obtuse and mucronulate at the apex, rounded-obtuse at the base, pubescent; petiole 1.5–8 cm long; rhachis 0.2–1.5 cm long; stipules 2.5–3 × 0.8 mm, bilobed at the base with lobes unequal, 3-nerved.
Calyx slightly pubescent; tube c. 1 mm long; lobes deltate, 0.8–1 mm long, lower as long as the laterals, upper united in a rounded and emarginate lip.
Flower yellow, 7–8 × 7–10 mm; pedicel 1–3 mm long, expanding as the pod matures; bracteoles c. 1 mm long, 1-nerved.
Pod 2–3 cm × c. 4 mm, linear-cylindrical, slightly curved, glabrous to pubescent, with a short curved beak.
Peduncle 2–8 cm × 0.2–0.8 mm, slightly pubescent; rhachis 0–2 cm long, 1–12-noded, internodes 2–3 mm long.
Standard with two U-shaped appendages; keel slightly twisted towards the left, without a beak.
Seed c. 5 × 3 mm; hilum 2 mm long, almost central; rim aril reduced, not excentric.
Annual or perennial, creeping, up to a few metres long.
Stem glabrous to villous, hairs up to 0.8 mm long.
Ovary 3–4-ovuled.
