Small trees, the young branches more or less tetragonal, becoming terete with age. Leaves opposite, petiolate, glandular, stipulate. Inflorescence of 1-flowered cymes gathered into terminal leafy racemiform or rarely paniculiform clusters. Flowers usually 12-to 16-merous, bisexual, actinomorphic. Hypanthium generally campanulate with alternate coriaceous teeth between the equal, conduplicate-valvate calyx lobes, the appendages absent. Petals inserted slightly below the orifice of the hypanthium, as many as the calyx lobes, spatulate, white to yellow. Stamens generally twice the number of calyx lobes, exserted, the anthers oblong-linear, the filaments united at the base into a fleshy perigynous cup continuous with the hypanthium. Ovary with a gynophore, bicarpellate, unilocular, the placentation free-central; ovules many; stigma capitate. Fruit an indehiscent capsule; seeds winged.
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