Standard 7–9 mm long, oblong-obovate, slightly auriculate, claw c.2 mm long; wings c.6 mm long, shorter than the keel, claw 2 mm long; keel petals c.8 mm long, obovate-hooded, fused from the middle to the apex, claw c.2.5 mm long.
Inflorescence a terminal panicle 20–65 cm long, fulvous-tomentellous; bracts c.2 mm long and bracteoles very small, falling early.
Calyx 2.5–3 mm long, fulvous-pubescent outside, sericeous inside; upper teeth obsolete, the others up to 1.5 mm long, obtuse.
First pair of seedling leaves opposite, later ones alternate, unifoliolate, ovate, apex acute, base cordate to rounded.
Pod 1-seeded, 6–9 × 1.6–2.3 cm, usually somewhat falcate, thinly sericeous; wing 2–3 mm wide.
Flowers 8–9 mm long, fasciculate on nodes along the panicle axes, pedicels 1.5–3 mm long.
Ovary 2-ovulate, pubescent, stipe c.3 mm long; style pilose below, glabrous above.
Branchlets fulvous-tomentellous; bark red-brown with paler lenticels.
Stamens c.8 mm long, the lower 6 mm fused into a sheath.
Young parts densely fulvous-pilose or tomentellous.
Scrambling shrub or liane up to 12 m tall.
Ripe seed not seen.