Canarium megalanthum Merr., Philip. J. Sc. 30 (1926)

Description
Tree up to 40 m by 60-70 cm, without buttresses. Branchlets 0.5-1 cm diam., rusty-tomentose; pith with a peripheral cylinder of scattered vascular strands. Stipules subpersistent, inserted on the petiole at 0.25-0.75(-3) cm from its base, 6-8 by 10-20 mm, deeply 3-4-lobed, stiff, densely and minutely fulvous-tomentose. Leaves (3-)4-5-jugate. Leaflets obovate, lanceolate or oblong, 9-20 by 4.5-8.5 cm, coriaceous, glabrescent; base oblique, cuneate to cordate; margin entire; apex gradually to abruptly, shortly and slenderly acute-acuminate; nerves (10-)13-19 pairs (angle 60-70 degrees), faintly curved, abruptly, usually distinctly, arching close to the margin. Inflorescences pseudoterminal to terminal, terminal ones broadly and laxly paniculate, 25 cm long female, main branches up to 9 cm, with few flowers; pseudoterminal ones narrowly paniculate, 25-30 cm long male, main branches 6-11 cm, paniculate, c. 10-flowered; minutely tomentose. Flowers pubescent, male 11 mm, female 13-15 mm. Calyx broadly cupular, male 7 mm, female 9 mm. Corolla female pubescent at both sides, male inside glabrous. Stamens adnate to the disk, filaments glabrous. Disk glabrous, male saucer-shaped, 1 mm high, rim undulate; female cupular, 2.5-3 mm high, truncate. Pistil long-pilose; male none. Infructescences c. 25 cm long, sparsely tomentose, with 4-5 fruits; calyx saucer-shaped, 3-lobed, 2-2.5 cm diam. Fruits ellipsoid, sometimes acute, bluntly triangular in cross-section, 5-5.5 by 3.5-4 cm, sparsely, near the apex densely, ferrugineously tomentose; pyrene smooth with 3, blunt to acute, angle-ribs, specially near the apex; lids 1-2 mm thick. Seed 1, spindle-shaped, acuminate at base, 4 by l.5 cm; fertile cell in cross-section circular, 1.5 cm diam., sterile cells strongly reduced, without lumen. [from Flora Malesiana]

Ecology
In undisturbed mixed dipterocarp forests up to 400 m altitude. On hillsides and ridges with sandy soils, occasionally on limestone.

Uses
The wood is said to be hard. In Brunei this species is cultivated for its edible seeds which are among the largest of this genus. The resin is said to be abundant.

Distribution
Peninsular Malaysia, Sumatra and Borneo.

Local names
Borneo: Baab, Kamatoa, Kedongdong, Mantus, Meritus, Ngaling, Ngela, Rarawa damar.