Branches corky lenticellate; branchlets glabrous to sparsely puberulent. Leaves opposite; petiole 0.4-1.3 cm long, glabrous to sparsely puberulent; blade subcoriaceous to coriaceous, ovate to elliptic, 1.4-7.9 by 0.6-4 cm, 1.6-4.1 times as long as wide, apex acuminate, base rounded to weakly cordate, glabrous to sparsely puberulent on midrib and secondary veins, 4-11 pairs of secondary veins, tertiary venation obscure or laxly reticulate. Inflorescence of axillary cymes with flowers clustered at ends, 1.1-4 cm long; puberulent; peduncles 0.3-3 cm long; pedicels 1.2-3 mm long. Sepals ovate, 0.9-1.4 by 0.4-0.8 mm, 1.4-2.4 times as long as wide, apex acute to acuminate, sparsely puberulent. Corolla greenish, yellowish or white, buds with narrow tube and wider head, lobes slightly overlapping, open corolla with reflexed lobes; tube 1.7-2.5 mm long, 1.4-2.5 times as long as sepals, 0.6-1 times as long as lobes; lobes narrowly elliptic, 2.3-3.8 by 0.6-0.7 mm; glabrous or with occasional hairs outside, pubescent with downward pointing hairs in throat and top of tube or, rarely, glabrous inside. Stamens inserted at 1.2-1.9 mm from corolla base which is 0.5-0.7 of tube length; filaments narrow, straight, pubescent, connate, 1.3-1.9 mm long; anthers with narrow incurved tails, 2.6-3 by 0.4-0.5 mm, 5.4-6.8 times as long as wide. Disk of 5 separate lobes, triangular, apex acute, 0.7-1.2 mm long. Ovary 0.6-1.1 mm long; style 3-3.2 mm long; style head 0.5-0.8 mm long. Fruit unknown.