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Climbing shrub or vine to 25 m high or creeper; stems glabrous. Leaflets with lamina mostly broadly elliptic (to suborbicular), 2.5–10 cm long, mostly shortly cuneate or rounded to obtuse at base, entire margin, shortly acuminate at apex, chartaceous, pubescent beneath in axils of veins; lateral veins 3–6 pairs; petiole slender, 6–12 cm long, twining; petiolules 0.3–2.7 cm long. Inflorescence 3.5–9 cm long, increasing to 40 cm in fruit; pedicels 2–3 mm long, pubescent. Perianth segments 10, c. 6 mm long, sparsely pubescent, pink; outer whorl narrowly ovate; inner whorl linear. Stamens 5, c. 3 mm long; glands 2, tubular, hooded; staminodes 5, minute. Style slender; stigma 3-lobed, undulate. Fruit 7–9 mm long; wings dimorphic, closely parallel-veined, coriaceous, glabrous, 2 wings c. 1.5 cm wide, 2 wings c. 0.5 cm wide. See also Duyfjes (1994: 408).
