Large woody climber to 40 m. Branchlets usually minutely and sparsely puberulent, more rarely glabrous; branches lenticellate. Leaves: petiole 1-3.1 cm long; blade elliptic to obovate, 3.7-16 by 2.1-8.7 cm, 1.4-2.5 times as long as wide, apex short acuminate to rounded, base rounded to obtuse; thickly coriaceous; glaucous beneath; glabrous or minutely and sparsely puberulent on midrib beneath; 5-11 pairs of clearly visible secondary veins at c. 60-70°, curving towards but not reaching margin, tertiary venation extending between secondary veins and meeting in a network of veins. Inflorescence axillary; axis shorter than subtending petiole; to 5 cm long; 8-20 flowers per inflorescence; axes minutely puberulent or glabrous on peduncle; pedicel 1.6-2.8 mm long. Sepals ovate, 1.9-2.6 mm long, lobes 1.1-1.6 by 1.2-2 mm, 0.7-1.1 times as long as wide, apex rounded or obtuse, often undulate edged or slightly reflexed, puberulent, ciliate. Corolla white, cream or greenish; tube cylindrical, 9.7-15 mm long, outside glabrous, inside puberulent around stamens; lobes 14-24 mm long, oblong, glabrous. Stamens inserted at 2.6-3.8 mm from corolla base which is 0.15-0.37 of tube length; filaments 0.2-0.5 mm long; anthers 1.4-2 by 0.4 mm. Ovary 0.5-1 mm long; style 0.8-1.2 mm long, not impressed on ovary; style head 0.4-0.5 mm long, apex 1-1.3 mm long. Immature fruits spherical.
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