Shrub 2-5 m high. Branchlets slightly lenticellate. Leaves in whorls of 3 or opposite; petiole 0.4-2 cm long, glabrous; blade elliptic, 5-16 by 2.6-5.7 cm, 1.5-3.1 times as long as wide, apex acuminate, very rarely obtuse, base cuneate or abruptly decurrent, glabrous above and beneath; secondary veins 8-17 pairs, 0.3-1.1 mm spaced, straight, rather arcuate-ascending near the margin, forming an angle of 75-90° with the midrib, forming a submarginal vein. Inflorescence 3-4 cm long, terminal, lax, 5-8-flowered; peduncle c. 2.3 cm long, glabrous; pedicels 0.3-0.4 cm long, glabrous. Sepals ovate, 1.5-1.6 by 1-1.1 mm, 1.45-1.5 times as long as wide, apex acute to acuminate, glabrous. Corolla 6 mm long in mature bud, forming a broadly ovoid head of 1.1 by 2 mm with obtuse apex, glabrous outside, with a villose belt inside from just around the mouth downwards to the insertion of the stamens; tube 5.1-5.3 mm long, 3.3-3.4 times as long as calyx, 3.9-4.1 times as long as lobes; lobes ovate, c. 1.3 by 1.2 mm, c. 1.1 times as long as wide, apex obtuse to rounded, entire. Stamens inserted at c. 5 mm from base, c. 0.9 of the length of the corolla tube; filaments c. 0.5 mm long; anthers c. 1.4 by 0.5 mm, 2.8 times as long as wide. Disk cup-shaped, 1.2 by 1 mm, c. 0.65 times as long as ovary, crenate. Pistil mostly glabrous; ovary syncarpous, ovoid, 1.5 mm long, glabrous; style filiform, 3 mm long, glabrous; style head 1 mm long. Fruit syncarpous, ovoid, 11-11.5 by 10 mm, 1.1-1.15 times as long as wide, laterally compressed, consisting of 2 mericarps, sometimes only 1 carpel developing, glabrous, apex rounded. Seeds 1 in each endocarp, narrowly ovoid, 8-8.2 by 2-2.3, 3.6-4 times as long as wide, acute, glabrous.
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