Woody climber, reported to 27 m high. Branchlets glabrous. Leaves: petiole 12-21 mm long; blade elliptic, 7.4-17 by 3.7-8.7 cm, 1.8-2.5 times as long as wide, apex short acuminate, apiculate, obtuse or rounded, base acute to cuneate, glabrous above and beneath, punctate beneath, 19-24 pairs of secondary veins, these strongly prominent beneath, weaker parallel and branched intercalcated tertiary veins, all anastomosing into an intramarginal vein. Inflorescence axillary, robust, 4.6-8.5 cm long; peduncle 1.6-2.5 cm long, sparsely puberulent; pedicels 1-6 mm long, sparsely puberulent, with 1 or 2 bracteoles. Calyx 1.7-2 mm long, connate at the base, lobes 0.8-1 by 1.2-1.3 mm, 0.6-0.8 times as long as wide, puberulent, apex obtuse. Corolla yellow; tube c. 8.4 mm long, 4.2 times as long as sepals, 1.1 times as long as lobes, glabrous outside except at very top of tube, densely pubescent inside beneath stamens; lobes falcate, c. 7.5 by 2.2 mm, 3.4 times as long as wide, apex acute, pubescent on part exposed in bud outside, glabrous inside. Stamens inserted at c. 4 mm from corolla base which is 0.5 of tube length; filaments c. 0.7 mm long; anthers c. 1.3 by 0.6 mm. Ovary c. 1.2 mm long; style and style head c. 2.8 mm long. Fruit unknown.
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