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Leaflets 3, 0.6–4.6(6.5) × 0.6–5.5 cm, ovate, rhombic or rounded, the laterals oblique, rounded to mostly acuminate at the apex, cuneate, rounded or truncate at the base, glabrous to finely puberulous on both surfaces, the margins often densely silky, densely gland-dotted beneath; petiole 0.7–6.5 cm long; rhachis 2–12 mm long; petiolules 1–2.5 mm long; stipules 4–5 × 1 mm, lanceolate, puberulous.
Calyx puberulous and gland-dotted; tube 1.5–3 mm long; lobes 2–5 mm long, triangular, the lowest the longest, the upper pair joined for ± three-quarters of their length.
Inflorescences axillary, lax or rather dense; rhachis 4–16 cm long; peduncle 1.5–7 cm long; pedicels 1.5–2.5 mm long; bracts subpersistent, 1.5–2 × 0.5 mm, lanceolate.
Standard mostly clear yellow but sometimes with crimson veins, 8–14 × 5–9.5 mm, obovate or almost round, puberulous and glandular.
Pods (12)15–20 × 4.5–5.5 mm, oblong-falcate, narrowed at the base, finely to densely puberulous and glandular.
Seeds greyish with dark and light mottling, 4.5 × 3 × 2 mm, rounded-reniform, slightly keeled.
Perennial trailing or climbing herb 0.3–3 m long from a woody rootstock.
Stems woody at the base, ridged, glabrous or pubescent.
