Branchlets glabrous to sparsely puberulent. Leaves opposite; petiole 0.2-1.5 mm long; blade papery to coriaceous, linear or, more rarely, elliptic or ovate, sometimes somewhat constricted near the base, 1.6-8.6 by 0.2-3.2 cm, 2.3-18 times as long as wide, apex acuminate to caudate, base cuneate to rounded, glabrous or with few hairs on petiole and leaf margin, 7-12 pairs of secondary veins, tertiary venation obscure. Inflorescence of delicate, axillary cymes, 3.5-14 cm long; sparsely puberulent especially on upper parts; peduncles 1.4-7.1 cm long; pedicels 3.5-8.5 mm long. Sepals ovate, 0.8-1.5 by 0.7-1 mm, 0.9-2.1 times as long as wide, apex acuminate, glabrous to sparsely puberulent. Corolla yellowish to reddish, buds cylindrical, lobes slightly overlapping, open corolla salverform; tube 2.1-4.5 mm long, 1.4-4.1 times as long as sepals, 0.7-1.4 times as long as lobes; lobes linear, 3-4.5 by 0.7-1.3 mm; sparsely shortly puberulent outside, pubescent in throat and top of tube inside with downward pointing hairs. Stamens inserted at 0.9-2.1 mm from corolla base which is 0.2-0.5 of tube length; filaments straight, coherent to each other, pubescent, 2.8-4 mm long; anthers narrowly triangular, tails pointed to obtuse, 3.6-4.8 by 0.6-0.7 mm, 5.4-7.2 times as long as wide. Disk of 5 separate lobes, oblong to triangular, apex acuminate, 0.7-1.1 mm long. Ovary 0.9-1.5 mm long; style 3.5-5.2 mm long; style head 0.9-1.2 mm long. Fruit linear, thin-walled, very sparsely puberulent to glabrous, 3.3-6 cm by 4-6 mm. Seeds: grain 4.9-5.5 by 1-1.3 mm, coma 1-1.3 cm long.
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