Aglaia grandis Korth.

Tree up to 27 m, sometimes small and unbranched. Bole up to 17 m, up to 75 cm in circumference. Bark smooth, grey, with shallow longitudinal fissures; inner bark brown or dark brown; sapwood pinkish-brown, brown or yellow; latex white. Twigs stout, up to 2 cm in diam., with many leaf scars, densely covered with brown hairs which have a central rachis and 2–4 whorls of arms radiating from it; apical bud up to 2.5 cm in diam. Leaves in spirals towards the ends of the twigs where they are very close together and the expanded bases of the petioles overlap, imparipinnate, up to 135(–200) cm long and 80 cm wide; petiole up to 20 cm long, up to 2 cm across at the base, petiole, rachis and petiojules with indumentum like the twigs; latex white. Leaflets 11–21(–25), 8.5–58 by 4–18 cm, upper surface shiny, coriaceous, acuminate at apex, narrowed to a usually subcordate, asymmetrical base, sometimes cuneate, especially on the terminal leaflet, lower surface densely covered with pale brown hairs up to 1 mm long, like those on the twiga with the surface visible between the hairs; veins 14–36 on each side of the mid-rib, reticulation visible on both surfaces; petiolules up to 20 mm. Inflorescence up to 30 cm long and 15 cm wide, the final branches up to 20 mm long and densely packed with sessile flowers; peduncle up to 7 cm, peduncle, rachis and branches clothed like the twigs Flowers up to 2 mm in diam. Calyx with hairs on the outer surface like those on the twigs. Petals 5, c. 1.5 by 0.6 mm. Staminal tube c. 1 mm long, shorter than the co-rolla, subglobose with the aperture wide and deeply 5-lobed; anthers 5, ovoid, half to nearly as long as the tube and just protruding through the aperture. Infructescence up to 40 cm long and 24 cm wide, with c. 5 fruits. Fruits brown, up to 5 cm long and 4.5 cm in diam., obovoid, sometimes with a small beak, with a thick indumentum of hairs up to 4 mm long like those on the twigs, fruitstalks up to 2 cm.

It is a tropical plant. It grows in moist evergreen or mixed deciduous forest near streams. In Thailand it grows between 10-1,000 m above sea level. It can be on limestone.

Plants can be grown from seed.