Shrubs, scandent, 1-2 m tall, glabrous; branchlets terete, 0.8-1.3 cm in diam., brownish; internodes 12-15 cm; leaf scars semiorbicular. Petiole stout, 4-6 × 2.5-3.5 mm; leaf blade obovate or rhombic, 3.4-5 × 1.6-1.8 cm, abaxially gray-green, adaxially deep green, base auricular, margin slightly revolute, apex obtuse; midvein very prominent abaxially, less so adaxially, secondary veins 12-15 pairs, anastomosing adjacent to margin. Cymes axillary or on branched axis, glomerate; peduncle 1-2 mm; pedicels incrassate, 3-3.5 mm. Sepals ovate, persistent in fruit. Capsule 15-20, ellipsoid or ovoid, 1.8-2 cm × 8-9 mm (length includes rostrum), rostrum 2-3 mm. Fr. Nov-Jan.
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