Trees 10-20 m tall, d.b.h. 30-50 cm, evergreen. Mature trees with tubular roots. Bark blackish brown, thick. Branchlets furrowed to smooth, 2-6 mm thick, glabrous. Stipules amplexicaul, ovate, 1.5-8 cm, with or without bent pubescence, caducous, scar annular, and conspicuous.

Leaves spirally arranged; petiole 1-3 cm; leaf blade elliptic to obovate, 7-15(or more) × 3-7 cm, lobed on new growth of young trees, leathery, abaxially pale green, and with scattered globose to ellipsoid resin cells, adaxially dark green, glabrous, and shiny, base cuneate, margin of mature leaves entire, apex blunt to acuminate; midvein abaxially conspicuously prominent, secondary veins 6-8 on each side of midvein; leaves on mature trees entire.

Inflorescences on old stems or brachyblasts. Male inflorescences axillary on apical branchlet, sometimes axillary on axillary brachyblasts, cylindric to conic-ellipsoid, 2-7 cm, many-flowered but some sterile; peduncle 1-5 cm. Female inflorescences with a globose fleshy rachis. Male flowers: calyx tubular, apically 2-lobed, 1-1.5 mm, pubescent; filament straight in bud; anther ellipsoid. Female flowers: calyx tubular, apically lobed; ovary 1-celled.

Fruiting syncarp pale yellow when young, yellowish-brown when mature, ellipsoid, globose, or irregularly shaped, 30-100 × 25-50 cm, with stiff hexagonal tubercles and thick hairs. Drupes narrowly elliptic, ca. 3 × 1.5-2 cm. Fl. Feb-Mar.