Small to large trees, 7-40 m tall, twigs 7-20 mm diam. Leaves: petiole 1-9 cm long, slightly winged by decurrent lamina; lamina obovate to elliptic to linear-lanceolate, 15-100 by 4.5-15 cm, coriaceous, base cuneate, not to strongly decurrent, margin entire, revolute, apex usually acute or rounded, rarely acuminate, the acumen 0-15 mm long, beneath glabrous; midrib plane to prominent above, prominent beneath, primary veins 12-50 pairs, brochidodromous, merging c. 3 mm from margin, prominulous on both surfaces, swollen at base, intercostal veins slightly prominulous above, prominulous beneath, reticulate to parallel and at right angles to the primary veins. Cataphylls triangular, 6-14 by 2-5 mm. Inflorescences terminal spikes, pendulous, 24-180 cm long, sparsely flowered, flowers spaced along rachis; latter c. 4 mm diam., accrescent to 10 mm, glabrous; bracts sublanceolate-triangular, 4-11 by 2-4 mm. Calyx closed in bud, the apex rounded, rupturing into 2-5 unequal segments, 14-18 by 12-16 mm. Flowers sessile; hypanthium subtetragonous with rounded edges, 9-13 by 9-10 mm, glabrous; sepals suborbicular, 14-18 by 12-16 mm, coriaceous, apex acute; petals 4, elliptic, 3.5-4.5 by 2-3 cm, white; stamens white, staminal whorls 4-6, the inner one staminodal, staminal tube 4-5 mm high, staminodia 1.5-2.5 cm high; disc annular, 1.5-2 mm high; ovary 4-locular, 4-6 ovules per locule; style 4-7.5 cm long. Fruits ovoid to subglobular, 5-11 by 3.5-7.5 by 3-7.5 cm, smooth. Seeds ovoid-subglobular, 3.5-6.5 by 2.5-4.5 cm, with about 14 deep fissures.
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