Tree, up to 40 m high, dbh up to 2 m, but usually much less; (with slight buttresses), the bole usually crooked. Branches terete, striate, 2-5(-8) mm diam., black when young, later yellowish brown to ashy; young parts sparsely, shortly fulvous-sericeous and with sessile glands. Leaves (2-or) 3-(or 4-)jugate; axial parts usually early glabrescent; young leaves deep purple; petiole terete to more or less flattened or slightly grooved above, 2-6(-8) cm long, pulvinate; rachis terete to 3-angular; petiolules swollen, slightly grooved above, 1-3 mm long. Leaflets elliptic to obovate, 4.5-18.5(-25) by 2.5-9 cm, chartaceous to coriaceous, dark brown or greyish green above, medium brown to greenish beneath, (sub)glabrous; base subacute to cu-neate, often oblique; margin entire to repandous; apex obtuse or emarginate (to shortly acuminate); nerves 12-15 or more per side, straight to slightly curved, looped and joined near the margin with the exception of the lower ones; intersecondary nerves often more or less strongly developed; reticulation fine, dense, prominulous on both surfaces. Inflorescences 6-15 cm long, sparsely hairy. Flowers pale yellow or pale green. Sepal lobes ovate to deltoid, c. 1.5 mm high, obtuse to acute, thin-hairy on both sides, the margin ciliate (and glandular), deciduous in fruit. Stamens: filaments c. 2 mm long, sparsely hairy; anthers broad-elliptic, c. 0.75 mm long, slightly emarginate at apex. Pistil strongly reduced in male flowers; ovary ovoid, slightly 3-angular and indistinctly 3-sulcate, c. 1.25 mm long; style rather thick, 1.25-1.5 mm long. Fruits broad-ovoid to subglobular, c. 15 by 13 mm when 1-seeded, or transversely ellipsoid, slightly flattened, somewhat bilobed, 17-20 by c. 18 by 14 mm when 2-seeded, narrowed at base, pointed at apex, granular, yellow. Seeds subglobular, c. 12 by 10 by 8 mm; hilum orbicular; testa dull medium-brown, smooth and glabrous; arillode yellow and subacid.
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A tree 15-25 m tall. It keeps its leaves most of the year. The bark is grey and flaky. The bark is reddish brown inside. The leaves have stalks and are divided into leaflets along the stalk. The leaflets are in 2-4 pairs. They have short leaflets. They are 6-26 cm long by 3-9 cm wide. They are oblong. New leaves are reddish. The flowers have short stalks. They are yellowish. They occur in side stalks with equal stalk length flowers along it. These appear with new purple leaves. Flowers can be male or of both sexes. The fruit is oval and green when ripe. They are 2 cm long and 1.5 cm across. The fruit have blunt prickles. There are 1-2 oily seeds.
Uses Wood for timber and especially for an excellent charcoal; bark used for dyeing and in native medicine. For a description of the timber, see p. 427. Young leaves eaten as a vegetable; fruits (arillode) eaten as a titbit; from the seed an oil is pressed which is used for several purposes, among others in native medicine and as a constituent of the true Makassar oil. See Heyne ( Heyne Nutt. Pl. Indon. ed. 3 1950 990-996 ).
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The fruit arillus is used to make some dishes acid. Seed oil is used for cooking. It needs to be carefully refined. It is then edible. The ripe fruit are eaten raw. Young fruit are pickled. The seeds are eaten raw or cooked. The young leaves and shoots are eaten raw. They are also used in soups or steamed and served with rice or fish.