Climber to 20 m high. Branchlets glabrous. Leaves: petiole 4-11 mm long; blade elliptic, more rarely narrowly ovate or oblong, 3.7-11.2 by 1.2-4.2 cm, 1.7-3.9 times as long as wide, apex long acuminate to subcaudate, base cuneate to obtuse, glabrous above and beneath, venation barely visible to obscure, 21-27 pairs of secondary veins, tertiary venation obscure. Inflorescence axillary and terminal, lax throughout, 4-11 cm long, peduncle 0.8-3.2 cm long, glabrous; pedicels 2.5-5.5 mm long, glabrous, with several to many bracteoles. Sepals 1.2-1.5 mm long, lobes 0.6-0.8 by 0.6-0.8 mm, c. 1 times as long as wide, apex obtuse to rounded, glabrous, ciliate. Corolla tube 7-8.7 mm long, 5.8-6.2 times as long as sepals, c. 2.5 times as long as lobes, glabrous outside, pubescent beneath stamens inside; lobes falcate, c. 3 by 1.2 mm, 2.5 times as long as wide, apex rounded, glabrous inside and outside. Stamens inserted at c. 4.2 mm from corolla base which is 0.5 of tube length; filaments c. 0.5 mm long; anthers c. 1.2 by 0.3 mm. Ovary c. 1.3 mm high; style and style head c. 3 mm long. Fruit fusiform or slightly torulose, 3.5-5 by 1.3-1.8 cm. Seeds c. 13 by 8.5 mm.
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