Shrub 1.5-2 m high. Branches lenticellate; branchlets glabrous. Leaves usually in whorls of 3, rarely 4; petiole 0.3-1 cm long, glabrous; blade thin, narrowly elliptic or narrowly obovate, 8-25 by 1.6-4.1 cm, 3.5-7.6 times as long as wide, apex acuminate to cuspidate, base decurrent or slightly so, glabrous above and beneath; secondary veins 8-11(-12) pairs, 0.3-2 cm spaced, arcuate ascending, forming an angle of 45-85° with the midrib. Inflorescence 3-7 cm long, usually in whorls of 2 or 3, rarely solitary, lax, 2-9-flowered; peduncle 1.8-4.5 cm long, often delicate, glabrous; pedicels 1-1.8 cm long, glabrous. Sepals ovate or subtriangular 1.7-3.1 by 0.8-1 mm, 2-3.7 times as long as wide, apex obtuse to acute, glabrous. Corolla pure white, 15-17 mm long in mature bud and forming an ovoid head of 2-2.2 by 5-5.1 mm, glabrous outside, villose from just around the mouth downwards for 3 mm; tube 10-13 mm long, 4.5-5.9 times as long as calyx, 1.7-2.2 times as long as lobes, slightly twisted; lobes obliquely ovate, 4-4.5 by 5.9-6.2 mm, 1.3-1.5 times as long as wide, rounded. Stamens inserted at 6-8 mm from the base, 0.6-0.7 of the length of the corolla tube; filaments 0.7-0.9 mm long; anthers 1.2-1.5 by 0.3-0.5 mm, 2.8-4.3 times as long as wide. Disk cup-shaped, 0.6-0.8 by 0.7-0.8 mm, 0.3-0.4 times as long as ovary, undulate. Pistil glabrous; ovary ovoid, 1.5-1.7 mm high, consisting of 2 carpels which are free from each other; style filiform, 4-4.3 mm long; style head 0.5-0.9 mm long. Fruit red when mature, usually of paired mericarps free from each other, with a very short stalk, sometimes only 1 carpel developing, subglobose to globose, 11-13 by 10-11 mm, 1.1-1.3 times as long as wide, apex rounded; endocarp rugose, rather hard. Seeds 1, obliquely ovoid, 8-10 by 3-4 mm, 2-3.3 times as long as wide, acute at both ends, glabrous.
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