Tree, 30 m high, d.b.h. to 85 cm, clear bole to 12 m, straight or crooked. Branchlets strongly angular, shortly yellowish to rusty tomentose in the distal parts, glabrescent, with red-brown, circular lenticels. Stipules lanceolate or ovate-lanceo-late, 0.4-0.7 by 0.14-0.21 cm, base subcordate, ajjex strongly acuminate, tomentose. Leaves: rachis 15-27 cm, shortly rusty tomentose, with a petiolar gland 0.6-1.6 cm above the base, elliptic in outline, strongly raised, convex, 2.5-4.5 mm; pinnae 16-25 pairs, opposite or subopposite, 2.7-8 cm, shortly rusty tomentose; leaflets 17-47 pairs per pinna, opposite, sessile, chartaceous, linear-subfalcate, (2.5-)4-6 by 0.8-1.3 mm, base strongly asymmetrically truncate, the acroscopic part adnate to the pinna, apex acute, upper surface glabrous, margins, main vein and major part of lower surface densely appressed puberulous; main vein marginal, running along the front margin Inflorescence composed of pedunculate glomerules aggregated into terminal, shortly tomentose panicles; peduncles 5 or more in a cluster, (1-) 1)-l 7(-2.5) cm, glomerules consisting of (10-) 15-20 flowers. Flowers dimorphic, bisexual, pentamerous, white. Calyx tubular, 1.8-2 mm, densely appressed puberulous; teeth triangular, acute, 0.1-0.2 mm. Corolla funnel-shaped, 5.5-6.2 mm, densely appressed puberulous; lobes ± equal, ovate-oblong, acute, 1.5-2 mm. Stamens c. 15 mm, tube equalling the corolla tube. Ovary sessile, glabrous, c. 2 mm. Pod dark brown, flat, straight, oblong, indehiscent, 10.5 by 1.9 cm, valves thinly woody, shortly glandular puberulous with pale glands and with distinct marks over the central seed-bearing part, veins inconspicuous. Seeds brown, (elliptic-)oblong, flattened, 5.3 by 3 by 1 mm; areole oblong, 3.5-1.3 mm, pleurogram ± parallel to the margin, open towards the hilum.
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