Branchlets minutely puberulent, rarely glabrous. Leaves: petiole 0.8-2.6 cm long; blade ovate to elliptic, 2.6-17.5 by 0.9-6.7 cm, 1.6-5 times as long as wide, apex acuminate, base rounded to cuneate, 5-9 pairs of secondary veins, with hairs in lateral vein axils, rarely glabrous. Inflorescence of axillary and terminal congested cymes; minutely puberulent, 2.5-5.5 cm long; pedicels 1.4-4.1 mm long. Sepals oblong to spathulate, 1.9-4 by 0.7-1.5 mm, 2.1-4.6 times as long as wide, apex rounded to obtuse, puberulent. Corolla lobes in bud valvate; bud elongate ovoid, open corolla tubular; tube 1.4-1.9 mm long, 2-2.5 times as long as lobes; lobes triangular, 0.7-0.8 by 0.6-0.7 mm; puberulent outside, sparsely puberulent inside. Stamens inserted at 0.2 mm from corolla base which is 0.1 of tube length; filaments 0.4 mm long; anthers 1.5 by 0.4 mm, 3.8 times as long as wide. Disk 5-crenate; 0.5 mm long. Ovaries 0.6 mm long; style and style head 1.3 mm long. Fruit long torulose, glabrous, 4.6-45 cm by 3-7 mm. Seeds: grain 7.8-11.2 by 3.2-5.4 mm; coma 1.5-3.3 cm long.
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