Tree to 42 m high, trunk to 25 m, to 90 cm in diameter; bark light brown or grey-brown with prominent vertical lines of lenticels. Young branches rusty tomentose, glabrescent. Stipules not seen. Leaves: rachis 2.2-9.5 cm, densely rusty tomentose, glabrescent, petiole 2.2-3 cm, with gland(s) at the junctions of the pinnae, circular or triangular in outline, slightly raised, flat, 1.5-2 mm in diameter; pinnae 1 or 2 pairs, 11.5-16.5 cm, densely rusty tomentose; leaflets 4-6 pairs per pinna, opposite, petiolulate, chartaceous, oblong, 3.5-13.5 by 1.8-5 cm, base asymmetrically rounded or ± subcordate; apex obtusely acuminate; both surfaces glabrous, on the main vein slightly puberulous above, lateral veins prominulous, reticulate. Inflorescence: spikes solitary or paired in the distal leaf-axils, 15-35 cm, puberulous, with inconspicuous caducous bracts, c. 0.2 mm, placed c. 2 mm below the flowers. Flowers pentamerous. Calyx pale green, cup-shaped, 2 mm, puberulous, margins slightly undulate. Corolla white, funnel-shaped, 5-6 mm, sericeous in the distal part, glabrous in the proximal part; lobes triangular-ovate, acute, 1.5-2.5 mm. Stamens c. 16 mm, tube c. 3 mm, equalling the corolla-tube. Ovary solitary, substipitate, 1-1.5 mm, villous. Pod (not known in ripe state) oblong, flat with raised margins, rusty tomentose, c. 24 by 1.6 cm. Seeds unknown.
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