Aglaia crassinervia Kurz ex Hiern, in Hook.f. Fl. Brit. Ind. 1 (1875)

Synonyms
Aglaia cinerea King
Aglaia pyricarpa Baker.f.
Chisocheton sumatranus Baker.f.

Description
Tree up to 31 m tall, up to 50 cm in diam.; buttresses upwards up to 2 m. outwards up to 30 cm, up to 20 cm thick. Bark smooth, greyishbrown or greyish-green. lenlicellate. sometimes with longitudinal cracks or flaking in small scales; inner hark pale yellow or dark reddish-brown or pink with white latex from cambium region; sapwood yellow, orange or pale brown, sometimes turning purple near the heart; latex white. Twigs fairly stout with numerous yellowish-brown or orange brown, peltate scales which are entire or have a fimbriate margin, with white latex. Leaves imparipinnate, up to I m long and 70 cm wide; petiole up to 20 cm long, petiole, rachis and petiolules with indumentum like the twigs. Leaflets 1 1-15(-17), 7-35 by 4-12 cm. often greyish-green when dry, acuminate-caudate at the apex, rounded or cuneate at the slightly asymmetrical base, upper surface w ith numerous almost white scales when young, glabrescent. usually rugulose and w ilh numerous pits and lower surface usually pitted, with numerous scales like those on the twigs on the midrib, veins and surface in between on the lower surface; veins 7-19 on each side of the midrib; petiolules up to 1 .5 cm. Male inflorescence up to 50 cm long and 60 cm wide. Female innorescence up to 30 cm long, peduncle, rachis and branches with indumentum like the twigs. Flowers subglobose, c. 1.5 mm in diam., fragrant; pedicels up to 1.5 mm. Calyx usually densely covered with scales like those on the twigs. Petals 5. Staminal tube 2/3-3/4 the length of the corolla, subglobose. with a wide aperture 0.4-0.5 mm across, entire; anthers 5, ovoid, 1 /2-2/3 length of the slaminal tube, inserted 1/3-1/2 the way up the tube and protruding through the aperture. Infructescence up to 30 cm long and 20 em wide, with up to 50 fruits. Fruits 5.5-6 cm iong and 3.5-4 cm in diam., subglobosc or pyriform, dull green, grey, brown or blackish-purple, becoming yellow or orange when ripe; pericarp woody, 1 mm thick, densely covered with scales like those on the twigs on the outside; stalk stout, up to 2 cm long and 1 cm wide. Locules 1 or 2, each containing or 1 seed. Seed with aril 2.5-3 cm long, 1.5-1.7 cm wide and 1-1.8 cm thick; aril transparent, reddish-brown, slightly sour. [from Flora Malesiana]

Ecology
In undisturbed mixed dipterocarp forests up to 1570 m altitude. On hillsides and ridges, but also common along rivers, streams and in seasonal swamps. On acidic rock, basalt, sandstone, clay to sandy soils. The fruits are eaten by monkeys.

Distribution
Nicobar Islands, Burma, Thailand, Peninsular Malaysia, Sumatra, Borneo, Philippines.

Local names
Borneo: Lansat-lansat, Lantupak, Lantupuk, Segara, Sigirah.