Canarium pseudodecumanum Hochr.

Tree up to 50 m by 165 cm, with large buttresses. Branchlets (¾-)1½-2½ cm diam., angular, glabrescent, leaf-scars large, terminal bud slender, 3-5 cm by 7-9 mm, densely ferrugineously woolly pubescent; pith thick, with many small vascular strands, appressed to the thin wood-cylinder. Stipules none. Leaves often nearly in whorls of four, (3-)4-6-jugate. Leaflets nearly sessile, lanceolate to oblong, 5-28(-33) by (2-)3-10(-12) cm, subcoriaceous, subglabrous above, densely minutely tomentose to sparsely stellately pubescent or nearly glabrous beneath; base rounded to subcordate; margin minutely serrulate (to subentire); apex rather abruptly, shortly acute-acuminate; nerves 20-25 pairs (angle variable), tortuous, more or less distinctly arching towards the margin, prominent beneath; reticulations very dense, waffle-like beneath. Inflorescences (female unknown) axillary, narrowly paniculate, up to 16 cm long, many-flowered, tomentose; flowers in glomerules. Bracts lanceolate to subulate. Flowers (female unknown) 7-9 mm long, pubescent. Calyx 3.5 mm high. Stamens free, glabrous. Disk cupular, 2 mm high, fleshy, densely erectly pilose. Pistil none. Infructescences unknown; calyx with remnants of a 6-lobed, fimbriate disk. Fruits ellipsoid, subtrigonous in cross-section, 7-8.5 by 4.5-6 cm, densely tomentose when young, glabrescent, scurfy; pyrene smooth, with 3 angle-ribs near the apex and often a faint median rib on each of the lids; lids 4-5 mm thick. Seeds (3-)2-1; all cells irregular-shaped, sterile ones slightly or not reduced.

A canopy tree in damp or swampy lowland forest. An uncommon large tree found scattered in dense primary forest on undulating swamp land at elevations up to 280 metres.

Uses. The wood is very soft. The abundant resin is used for caulking canoes. An edible oil is pressed out of the seeds, which also are eaten.

Plants are grown from seeds.