Leaflets 3, markedly paler beneath, 1.3–8.5 × 1–6.3 cm, broadly elliptic to ovate, acute to shortly acuminate or sometimes ± rounded at the apex, rounded to subcordate at the base, pubescent above, softly velvety hairy beneath but leaf surface not entirely obscured; venation raised beneath the hairs, ferruginous; petiole 1–8 cm long; rhachis 2–12 mm long; petiolules 1–3 mm long; stipules deciduous, 7 × 2 mm, lanceolate, veined, hairy.
Inflorescences axillary, glandular-hairy, sometimes apparently branched (but actually a reduced axillary branchlet with several inflorescences from axils without developed leaves); rhachis 1–3 cm long; peduncle 5(10) mm long; pedicels 1.5–2.5 mm long; bracts deciduous, 7–8 × 4 mm, ovate, veined, hairy.
Calyx glandular-hairy; tube 3 mm long; lobes lanceolate, the lowest the longest, 12 mm long, the rest 6–7 mm long, the upper pair joined only at the extreme base.
Standard yellow with pellucid nerves, 13 × 11 mm, round, glabrous; wings bright yellow; keel very pale greenish-yellow.
Pods 30 × 8 mm, falcate, densely covered with long hairs, short hairs and glands.
Stems pubescent and also with longer spreading hairs.
Scrambler up to 2 m long.
Seeds not seen.