Tree. Stipules reniform, 4 by 12 mm, glabrous, caducous. Leaves often 3-jugate; petiole up to 3 cm and rachis up to 9.5 cm long, puberulous when young, glabrescent, or glabrous. Leaflets coriaceous, elliptic, ovate-or obovate-oblong, rarely slightly obovate, 6-11.5 by 2.5-6.5 cm; apex shortly acuminate or acute; base rotundate, obtuse, subcuneate or acute, sometimes slightly unequally sided and often almost glabrous on both surfaces; petiolules very short, up to c. 5 mm, almost glabrous. Infructescences paniculate, up to 13 cm long, lateral branchlets up to 3.5 cm long. Pods ovate-orbiculate, 3.1-3.9 by 2.7-3.1 cm, flattened, often unequally sided, glabrous, with rather moderately spaced, short spines, situated on a swollen base with abundant resin; beak short (c. 2 mm), straight or slightly curved. Seeds 1 or more, situated almost in the centre part of the pod on top of a small aril, suborbicular, c. 1 cm in diam., black.
UsesCultivated in Java: Bawean Is. The resinous wood oil is used in mixtures (with Oleum Dempel) for caulking boats. The fruits are exported and sold as medicine. The timber is locally abundant and used for furniture. See Foxworthy Philipp. J. Sc., Bot. 4 1909 471 Burkill Diet. Econ. Prod. Malay Penins. 1935 2032 K. Heyne Nutt. pl. Indon. 3 1950 729
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