Aglaia leptantha Miq., Ann. Mus. Bot. Lugd. Bat. 4 (1868)

Latin for 'with thin flowers'.

Aglaia annamensis Pellegr.
Aglaia gamopetala Merr.
Aglaia glabriflora Hiern in Hook.f.
Aglaia glabrifolia Merr.
Aglaia laevigata Merr.
Aglaia leptantha var. borneensis C.DC. in DC.
Aglaia multiflora Merr.

Tree up to 30(-40) m, sometimes flowering and fruiting at 4 m. Up to 132 cm in circumference. fluted near the base or with small buttresses upwards up to 30 cm and root-like buttresses outwards up to 135 cm. Outer bark pale grey, greenishbrown, yellowish-brown, or reddish-brown with greyish-green patches, with longitudinal and transverse cracks and round lenticels; surface of inner bark green and pale yellow; inner bark green, pale orange-brown or reddish-brown; sapwood pale brown, pale yellowish-brown, dark orange-brown or reddish-brown, soft; latex white or exudate pinkish-orange. Twigs slender, densely covered with reddish-brown, pale brown or grey peltate scales which have a fimbriate margin, when pale, the scales have a dark grey central spot. Leaves imparipinnate, 30-83 cm long. 20-68 cm wide; petiole 6.5- 16 cm, petiole, rachis and petiolules with few to densely covered with scales like those on the twigs. Leaflets 7-11 (or 12), 3.5-34 by 1.5-14 cm, dark glossy green above, paler beneath, young leaflets brownish-green when dry, older leaflets black or blackish green when dry, acuminate-caudate at apex, broadly cuneate or rounded to a sometimes subcordate asymmetrical base, lower surface with scales like those on the twigs few to numerous on the midrib, few on the veins and rarely on the surface in between, sometimes in Borneo with numerous orange brown stellate hairs, glabrescent. but the scales present on older parts like those on the twigs, sometimes in Borneo with numerous pits on upper and lower leaflet surfaces; veins 4-14 on each side of the midrib, black or reddish- brown when dry; petiolules 2-10(-25) mm. Inflorescence up to 40 cm long and wide; peduncle up to 10 cm. peduncle, rachis and branches with indumentum like the twigs. Flowers 1.8-3 mm long, 1.7-3 mm wide, obovoid or ellipsoid, smelling of citronella, pedicels 0.8-2 mm, densely covered with scales like those on the twigs. Calyx without or densely covered with scales on the outside. Petals 5. Staminal tube slightly shorter or longer than the corolla, either with a shallowly 5-lobed aperture c. 0.5 mm in diam. or with a minute apical pore at the apex c. 0.3 mm across, occasionally with a few stellate scales on both surfaces or simple hairs inside; anthers 5. narrowly ovoid, inserted about 1/6-1/3 up the tube and included or just protruding, with a few pale brown stellate scales. Infriictescence up to 10 cm long and 5 cm wide with few fruits; peduncle up to 6 cm with surface like the twigs and few to numerous hairs or scales like those on the twigs. Fruits 1.5-3.2 cm long and 1.5-3 cm wide, ellipsoid or subglobose, sometimes laterally compressed and then c. 2.3 cm thick, with a longitudinal ridge encircling the fruit; the pericarp either thin or hard and woody and up to 5 mm thick, brown, orange, yellow, white or green, densely covered with pale brown stellate scales on the outside; fruitstalks c. 2 mm. Locules 1 or 2, each containing 1 seed. Seed up to 2.3 cm long, 1.4 cm wide and 1 cm thick, ovoid, the inner surface flattened; with a complete gelatinous, translucent, sweet-sour edible aril. [from Flora Malesiana]

Found in primary forest, including seasonal swamp, ridge forest, montane forest and in kerangas; on sandstone, ultramafic, limestone, sand, granitic sand, clay and podzolic sand; 20-1700 m altitude.

The durable timber is used. The fruits are edible.

Indo-China and Thailand to the Moluccas.

Local names
Borneo: Langsat-langsat, Lantupak, Segera.