Tree to 10 m tall, to 46 cm dbh. Bark grey or yellow, smooth; inner bark white. Branchlets glabrous, sparsely lenticellate, weakly winged. Leaves: petiole 5-7 mm long, glabrous; blade subcoriaceous to coriaceous, mostly drying reddish brown, elliptic, 6.5-24.5 by 2-10.2 cm, 2.1-3.3 times as long as wide, apex long acuminate with a blunt tip, base acute to cuneate, glabrous above and beneath, secondary veins 9-16 pairs with 6-18 mm spacing, 65-70° from midrib. Inflorescence with dichasial branching followed by cincinnate branches, 10.7-20 cm long with axes 7-16 cm long and branches 2-2.3 mm wide, densely puberulent; peduncle 2.7-9.3 cm by 1.9-2.3 mm, puberulent; pedicels c. 1.2 mm long, densely puberulent, subtending bracts persistent. Sepals oblong, 2.3-3.7 by 1.4-2.2 mm, 1.6-1.75 times as long as wide, apex rounded to obtuse, ciliate, densely puberulent outside, glabrous inside. Corolla completely white; tube 22-35 by 1.4 mm, 1.1-1.4 times as long as lobes, 5.9-13.5 times as long as calyx, pubescent around and beneath stamens and in throat, glabrous or sparsely puberulent at top of tube outside; lobes 16-28 by 6.2-7 mm, 2.6-4 times as long as wide, elliptic, apex rounded, ciliate only at lobe base, glabrous outside and inside. Stamens inserted 19-21 mm from corolla base which is c. 0.7 of corolla tube length in rehydrated flowers; anthers 1.9-2.6 by 0.5-0.6 mm, 3.8-4.6 times as long as wide, apex 5.2-5.8 mm from corolla throat; filaments 0.8-0.9 mm long, pubescent. Disk 1.1-1.5 mm long, 0.9-1.7 times as long as ovaries, glabrous, awl-shaped, narrowly deltoid or narrowly ovate, apex acuminate. Ovaries 0.9-1.5 mm high, densely pubescent on top or densely pubescent all over; style 17-20 mm long; style head 1.1-1.4 mm long. Fruit sparsely puberulent, with a blunt hooked spur, 12-17 by 5.4-6 by 7-10 mm, spur 3.5-6 mm long.
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