Branches lenticellate or with large corky thickenings; branchlets glabrous. Leaves: petiole 1.7-6 cm long; blade coriaceous, elliptic, 11.1-38 by 7.6-20.5 cm, 1.5-1.7 times as long as wide, apex acuminate or apiculate, base rounded to obtuse, 7 or 8 pairs of secondary veins, prominent or not beneath, tertiary venation reticulate, glabrous. Inflorescence an elongated cyme, brown puberulent distally, 17-37 cm long; pedicels 6.5-8.5 mm long. Sepals ovate, 2.1-2.5 by 2.2-2.5 mm, 1 times as long as wide, apex rounded, puberulent, ciliate. Corolla bud ovoid, open corolla urceolate; tube 9.8-10 mm long, 3.9-4.8 times as long as sepals; lobes triangular, 2-2.3 by 1-1.4 mm, apex acute, 0.2 times as long as tube; densely short brown puberulent outside, glabrous inside. Stamens inserted at c. 7.4 mm from corolla base which is 0.7 of tube length; filaments 2.1 mm long, strongly curved; anthers with bases strongly curved outwards, c. 4.5 by 1.5 mm, 3 times as long as wide. Disk c. 1.2 mm long, shorter than ovary. Ovary c. 1.8 mm long; style c. 4.3 mm long; style head c. 1.8 mm long.
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