Tall trees with tall buttresses. Leaves coriaceous, glabrous, lamina extends to petiole making leaves sessile, margin finely crenulate, venation pinnate. Inflorescences paniculate corymbose, terminal, glabrous, sometimes subtended by dwarfed leaves; bracts early caducous, leaving conspicuous scars. Flowers white; pedicels articulate at the base. Calyx tube distinctly 4-winged, gradually enlarging upwards, lobes 4, thick, alternate with the wings, imbricate. Petals 4. Stamens multiseriate, subequal, forming tube at the base; filaments slender; anthers basifixed, versatile, 2-celled, longitudinally dehiscent. Ovary inferior, 4-celled, ovules multiseriate, axillary; style slender, stigma funnel-shaped. Fruits 4-winged, the seed-bearing portion very narrow, thin-walled; wings equal, thinly coriaceous or submembranaceous.
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