Woody climber to 35 m. Branchlets glabrous; densely lenticellate. Leaves: petiole 0.8-2.4 cm long; blade broadly elliptic, 7.7-18.5 by 2.5-8.7 cm, 1.4-2.8 times as long as wide, apex short acuminate, base cuneate to rounded, subcoriaceous to coriaceous, dull above and beneath, glabrous above and beneath, 8-15 pairs of clearly visible secondary veins at 40-70°, reaching margin, tertiary venation almost perpendicular to the midrib, oblique to the secondary veins, several in each space. Inflorescence axillary, sometimes 2 in an axil; axis longer than the subtending petiole, to 5 cm long; 18-30 flowers per inflorescence; axes glabrous or sparsely and minutely puberulent; pedicel 1.4-5.5 mm long. Sepals ovate, 1-2 mm long, lobes 0.6-1 by 0.9-1 mm, 0.7-1 times as long as wide, apex rounded, glabrous, ciliate. Corolla tube inflated, 1.8-2.8 mm long, glabrous outside and inside; lobes 2-2.8 mm long, ovate, apex obtuse, glabrous. Stamens inserted at 1.3-2.2 mm from corolla base which is 0.57-0.71 of tube length; filaments 0.3-0.9 mm long; anthers 0.7-0.9 by 0.3-0.5 mm. Ovary 0.9-1.1 mm long; style 0.5-0.9 mm long, not impressed on ovary; style head 0.1 mm long, inconspicuous, apex 0.1-0.2 mm long. Fruit spherical, 3-11.2 by 2.2-9.5 cm, green, yellow or orange. Seeds 1.1-1.7 by 0.7-1.1 by 0.6-0.7 cm.
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