Branchlets glabrous or minutely puberulent. Leaves: petiole 4-25 mm long; blade elliptic or weakly obovate, 3.8-12.6 by 1.8-4.7 cm, 1.8-3.6 times as long as wide, apex acuminate or apiculate, base acute to rounded, 7-11 clearly visible pairs of secondary veins, tertiary venation obscure, glabrous above and beneath, usually obscurely punctate beneath. Inflorescence of congested axillary cymes, sometimes also terminal, densely minutely puberulent, 2-4 cm long; pedicels 1.4-3.3 mm long, bracteoles at base. Sepals ovate, 1.6-2.7 by 0.8-1.2 mm, 1.6-2.3 times as long as wide, apex acute to obtuse, glabrous or minutely puberulent, ciliate. Corolla greenish yellow; tube 5-8 mm long, 0.6-1 times as long as lobes; lobes strap-shaped, falcate, 6.1-9.2 by 1.3-2 mm; glabrous outside, pubescent on inside of lobes and in tube. Stamens inserted at 0.8-1.4 mm from corolla base which is 0.1-0.2 of tube length; anthers 1.4-1.9 by 0.5-0.6 mm. Disk annular, 5-dentate or 5-crenate, 0.5-0.6 mm long, 0.6-0.9 times as long as ovary. Ovaries 0.7-0.9 mm long; style and style head 1.1-1.3 mm long. Fruit 10.2-14 by 1.3-1.8 cm. Seeds: grain 8.5-13.5 by 3.5-6 mm; beak 6-7.9 mm long; coma 5-9.5 cm long.
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