Tree up to 50 m high and 70 cm Ø. Buttresses up to 5 m high, 4 m wide, and 6 cm thick. Bark greyish white, light brown or brown, smooth to rough, shallowly fissured, and irregularly flaked. Leaflets 4-5 pairs, thinly coriaceous, ovate-or elliptic-oblong, sometimes obovate-oblong, or elliptic-lanceolate, 5½-13(-18) by 2-5½(-6½) cm; glabrous, sometimes puberulous on both surfaces, glabrescent except on the midrib, nerves, and veins, domatia often present (rarely absent), distinct, hairy; base obtuse; apex acuminate; nerves 8-15 pairs; petiolules 3-6 mm, the terminal one up to 12 mm. Panicles up to 3 long, tomentose, glabrescent and sometimes seemingly glabrous; bracts lanceolate, ½-⅔ mm long; pedicels ⅓ mm. Flowers cream-coloured. Calyx lobes broadly ovate, ½-⅔ mm long. Petals obovate-oblong, 1½-2½ by 1-1½ mm. Stamens ⅔-1 mm; anthers bent towards the center and almost perpendicular to the filaments. Disk ⅔-1 mm Ø. Ovary ½-¾ mm Ø. Drupe ovoid or ovoid-oblong, 3-5 by 2-2¾ cm, scurfy. Seed ovoid-oblong, compressed, 2½-4 by 1-2 cm.
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A large tree. It can be 15-50 m high. The trunk can be 70-80 cm across. The bark is smooth and light brown. The bark can be cracked along its length and flake off irregularly. It has buttresses which can be high and wide. The leaves are made up of 4-5 pairs of leaflets. These are thin and rough and oblong. They can be 6-13 cm long and 2-6 cm wide or larger. The leaf tapers towards the tip. Twigs and new growth are red. The flower panicles are up to 31 cm long. The flowers are cream coloured. The fruit can be 3-5 cm long by 2-3 cm across. They have a rough surface. The seed is oval and 2-4 cm long by 1-2 cm across. Black fruit (fallen on ground). Edible fruit.
Lowland forest on banks of rivers or streams, sometimes in seasonally inundated places (cf. ENDERT Tectona 13 1920 131 ), in swamp forest, or in secondary forest, lowland up to 75 m, rarely up to 300 m. Fl. March-Dec.; fr. Jan.-Dec.
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It is a tropical plant. It grows naturally in lowland rainforest. It often occurs in places that are flooded at times during the year. It is mostly from sea level to 75 m altitude but occasionally grows up to 300 m altitude.
Lowland forest on the banks of rivers or streams, sometimes in seasonally inundated places, in swamp forest, or in secondary forest, at elevations up to 75 metres, rarely up to 300 metres.