Tree to 20 m high, 50 cm in diameter. Branchlets terete, glabrous. Leaves: rachis 4-15 cm, glabrous, glands oblong or rhomboid, hardly raised or cushion-shaped, without raised margins, 3-5 mm; pinnae (1 or) 2 pairs, c. 5-15 cm, glabrous, glands obtriangular or rhomboid, flat, sessile, without raised margins; petiolules c. 6-8 mm, glabrous; leaflets 2-4 pairs per pinna, opposite, rigidly chartaceous, drying dark green above, bright green beneath, ovate, ovate-elliptic, elliptic, or obovate-elliptic, ± equal-sided, 3.5-20(-37) by 3-9 (-18.5) cm, base symmetrically rounded or broadly cune ate, apex shortly and obtusely acuminate, both surfaces glabrous; principal lateral veins 6-8 per leaflet-half, ± parallel, strongly oblique, slightly archsng, some of the secondary lateral veins forming trabeculate anastomoses; reticulation prominulous above, prominent beneath. Inflorescences terminal and axillary at the distal leaves, yellowish sericeous in the distal parts, glabrescent, consisting of pedunculate glomerules aggregated into panicles, c. 50 by 30 cm; glomerules consisting of 2-6 (sub)sessile flowers; floral bracts orbicular, obtuse 0.5-1 mm, sericeous. Flowers pentamerous, bisexual. Calyx yellow or yellowish-green, broadly campanulate, 1.5-2(-4) mm, scarcely sericeous; teeth triangular acute, 0.5-1 mm. Corolla yellow or yellowish-green, campanulate, 4.5-5(-9) mm, sericeous; lobes elliptic-lanceolate, acute, reflexed, 2-2.5(-4) mm. Stamens white, c. 6 mm, tube equalling the corolla-tube. Ovary solitary, glabrous. Pod yellowish or red-brown outside, reddish-orange within, curved into a circle 4.5-8 cm in diameter, valves 2-3.5 cm wide, coriaceous, not sinuate, often spirally twisted after dehiscence, glabrous, inconspicuously veined, dehiscing along both sutures. Seeds black with a bluish bloom, ellipsoid, c. 17-21 by 10—11(—15) mm.
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Trees, small, to 20 m tall. Branchlets terete, with white lenticels; young branchlets brown pubescent. Pinnae 1 or 2 pairs; glands at upper part of petiole and rachis; petiolules 3-4 mm; leaflets 2 or 3 pairs, opposite or subopposite, elliptic or ovate-elliptic, 7-18 × 3-9 cm, both surfaces glabrous, base cuneate to broadly cuneate, apex acuminate to long acuminate. Heads 2-6-flowered, arranged in terminal and axillary panicles. Calyx 4.5-5 mm; teeth 0.5-1 mm. Corolla 4.5-5 mm; lobes 2-2.5 mm. Staminal tube equaling corolla tube. Ovary puberulent. Legume curved into a circle, 4.5-8 mm in diam.; valves 2-3.5 cm wide. Seeds 1.7-2.1 × 1-1.1 cm. Fl. and fr. year-round.
A small tree. It grows 20 m tall. The young branches have brown hairs. The leaves have 2 or 3 pairs of leaflets. They are 7-18 cm long by 3-9 cm wide. There are 2-6 flowers in heads. They are in groups near the ends of branches. The fruit is a pod curved into a circle. The seeds are 2 cm long by 1 cm wide.
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