Large climber. Twigs laxly pubescent, gla-brescent, pith narrow. Stipules deltoid, 1 mm, brown-purple, fimbriate. Petiole 1½-2½ cm, glabrescent. Leaf blade thin-coriaceous, 9-12½ by 5¼-6¾ cm; base rounded, top gradually acuminate, the tip c. 1 cm; midrib narrow, sub-prominent, veins 5-7 on either side, rather parallel and arcuating, reticulation fairly distinct on both sides; margin subserrate; surfaces dull brown-greenish, glabrous. Inflorescences axillary, sparsely branched racemes to 8 (-20) cm long, also terminal to 17(-20) cm long, fulvous pubescent; pedicels at some mm distance, c. (3-)5-8 mm long. Sepals 1-2 by 1 mm. Petals: the smallest 3½-4 by 1½ mm, the middle ones 4 by 2 mm, the lip 7(-9) by 5 mm, hairy, with two extra hair tufts distally near the basal sac. Stamens 2-3 mm; filaments narrower than the anthers; fleshy appendages about as long as the anther cells; thecal appendage small, sometimes bifid. Ovary sparsely pilose, size c. 1 mm. Fruit (immature) 3¼ by 1¾ cm, ellipsoid, brown, glabrous.
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