Branchlets densely brown puberulent or, rarely, glabrous; branches lenticellate or not. Leaves: petiole 2-7 mm long; blade papery, ovate, elliptic or weakly obovate, 2.3-13.3 by 0.9-4.7 cm, 2-3.6 times as long as wide, apex acuminate to caudate, base cuneate to rounded, 3-8 pairs of secondary veins, strongly ascending, tertiary venation laxly reticulate; hair-filled domatia in secondary vein axils with the midrib, occasionally also sparsely puberulent on the midrib. Inflorescence puberulent, 1.7-9.5 cm long; pedicels 0.9-4.5 mm long. Sepals ovate, 0.8-1.3 by 0.6-0.9 mm, 1-2 times as long as wide, apex rounded to acute, puberulent. Corolla yellow to orange; tube 1.3-3.1 mm long, 0.9-2 times as long as lobes, puberulent outside, puberulent behind stamens inside; lobes 0.9-2.2 by 0.5-0.9 mm. Stamens inserted at 0.2-0.5 mm from corolla base which is 0.1-0.2 of tube length; filaments 0.3-0.7 mm long; anthers 1.2-1.6 by 0.4-0.6 mm, 2.3-4 times as long as wide. Disk 0.4-0.8 mm long. Ovaries 0.4-0.9 mm long; style and style head 0.7-1.1 mm long. Fruit glabrous or very sparsely puberulent; 4-57 cm by 1.8-4 mm. Seeds 11.2-19 by 1.1-2 mm; coma 1.7-3 cm long.
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