Climber to 6 m high. Branchlets brown tomentose. Leaves: petiole 1.4-2.7 cm long; blade elliptic, oblong or slightly obovate, 14-19.7 by 4.3-8.1 cm long, 2.6-4.2 times as long as wide, apex short acuminate, base acute to obtuse, 17-19 pairs of secondary veins at 80°, tertiary venation scalariform, tomentose on midrib and secondary veins. Inflorescence of a short peduncled cyme with flowers clustered at ends, brown tomentose, 5.4-7 cm long; pedicels 1.3-3.5 mm long. Sepals ovate, strongly imbricate, 1.1-1.5 by 1.8-2.1 mm, 0.6-0.7 times as long as wide, apex rounded, tomentose. Corolla white; tube 28-30 mm long, tomentose outside, pubescent around stamens inside; lobes 12-14 by 3.5-4 mm, obovate. Stamens inserted at 7.3 mm from corolla base which is 0.3 of tube length; filaments 1.4 mm long, strongly bent; anthers 2.5 by 0.6 mm. Ovary 1.2 mm long; style and style head 3.7 mm long. Fruit unknown.
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