Sprawling shrub or liane. Stems prickly, later with corky flanges, puberulous, glabrescent. Leaves: stipules not seen, caducous; petiole 1–3.5 cm long; rachis 4–9 cm long with scattered hairs, prickly; pinnae 2–5 pairs; leaflets 2–5 pairs, broadly obovate, rounded to slightly emarginate, (7–) 10–24 (–27) mm long, (5–) 7–13 (–17) mm wide, discolorous, shining above, glabrous or sparsely hairy above. Racemes in terminal panicles, pubescent; pedicels c. 2 mm long; bracts narrowly triangular, c. 4 mm long. Sepals oblong, pubescent near base, the largest 7.5 mm long, the others 4.5–5 mm long. Petals 5.5–6 mm long, the uppermost slightly shorter and narrower than the other 4, yellow. Stamens c. 6 mm long, hairy in lower half; anthers 1.2 mm long. Pistil c. 8 mm long, glabrous; style glabrous; stigma narrowly funnel-shaped, fringed. Pod and seed not seen.
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