Trees, to 25 m tall. Branchlets terete, glabrous. Stipules inconspicuous; leaf glands circular, with somewhat raised margins, ca. 0.5 cm above base; pinnae ca. 3 pairs; leaflets 4-6 pairs, ovate-subrhombic, 2-3 × 1-1.7 cm, both surfaces sparsely puberulent, main vein medial or almost so, base asymmetric, broadly cuneate, apex rounded. Corymbs ca. 10-flowered, arranged in puberulent to tomentose panicles; peduncles ca. 2.5 cm. Flowers dimorphic, pedicellate. Calyx tubular, 2-3.5 mm; teeth inconspicuous. Corolla white, narrowly funnel-shaped, 7-9.5 mm; tube glabrous to faintly puberulent; lobes ± narrowly triangular, ca. 2.5 mm, puberulent to sericeous, apex acute. Stamens purple to pink; staminal tube irregularly split, intermediate between corolla tube and corolla. Ovary glabrous; stipe 1-2 mm. Legume indehiscent, yellowish, oblong, ca. 14 × 2.8 cm, bullate over seeds, glabrous. Seeds brown, narrowly elliptic, 8.5-9 × ca. 4.5 mm; pleurogram narrowly elliptic.
Ssp retusa is found by the coast on sandy beaches, mangrove; lowland rain forest subject to flooding; coral sand. Ssp morobei is found in rain forest, secondary regrowth on alluvial soils at elevations up to 810 metres.
Can be grown by seedlings. Seeds needs soaking.
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