Woody climber to 15 m high. Branchlets sparsely lenticellate, sparsely to densely pubescent. Leaves: petiole 8-17 mm long, sparsely to densely pubescent; blade elliptic to oblong, 3-13.6 by 0.8-5.2 cm, 2.1-4 times as long as wide, apex acuminate to caudate, base cuneate to rounded, sparsely to densely pubescent on midrib above, sparsely to densely pubescent beneath, rarely only on midrib beneath, 8-16 pairs of secondary veins, 80-90° from midrib anastomosing into a slightly looped intramarginal vein inset from margin, tertiary venation reticulate. Inflorescence axillary, 1.8-4 cm long; peduncle 0.4-2 cm long, densely pubescent; pedicels 2-9 mm long, densely pubescent. Sepals 2.5-7.5 by 0.7-1.2 mm, 2.1-8.1 times as long as wide, narrowly ovate to linear, often of markedly different lengths in a single flower, apex acute to acuminate. Corolla yellow; tube 9-11 by 1.6-2.4 mm, 1.6-3.3 times as long as sepals, 2-3.7 times as long as lobes, glabrous or pubescent around top of tube outside, glabrous or with very few minute hairs at base inside; lobes 3-3.2 by 3.2 mm, 0.9-1 times as long as wide, obliquely suborbicular, apex rounded, densely pubescent outside and inside. Stamens inserted at 6.4-6.7 mm from corolla base which is 0.6 of tube length; anthers 3.4-3.5 by 0.7-1 mm, tips at corolla throat. Ovary 2 mm long, glabrous; style 2.5 mm long; style head 0.9 mm long. Fruit to 3.8 by 2.3 cm (possibly immature), ovoid, more rarely slightly pear-shaped, often 5-angled and strongly wrinkled, glabrous or very sparsely puberulent.
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A woody climber. It grows 15 m tall. The leaves are narrowly oval to oblong. The flowering shoots are in the axils of leaves and are 2-4 cm long. The flowers have a yellow tube 9-11 cm long. The fruit are pear shaped and often 5 angled and wrinkled.
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