Trees or shrubs. Leaves usually elliptic or oblong, acute to long acuminate at the apex, tapering basally; petioles short; stipules deciduous except usually per-sistent at the tips of the twigs, elongate, free. Inflorescences terminal, cymose umbellate, the flowers secundly disposed. Flowers with the hypanthium short, the calycine cup and teeth short; corolla white, the lobes valvate, ovate, bifid at the apex, the margins conspicuously scalloped; stamens with anthers often ses-sile, attached below the middle of tube; ovary 2-celled, the ovules numerous, the placenta adnate to the middle of the septum. Fruits capsular, linear or narrowly oblong, splitting into 4 spirally coiled valves; seeds imbricate, membranous, winged, the wing usually bifid at the base, entire or dentate at the apex.
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