Trees or shrubs. Leaves opposite, the stipules interpetiolar, entire, occasion-ally persistent. Inflorescences terminal, paniculate. Flowers abundant, the ca-lycine cup truncate, the teeth 4-5; corolla subrotate to infundibuliform, the lobes 4-5, imbricate; stamens 4-5, inserted on the mouth, the anthers dorsifixed, exserted; ovary 2-celled, the ovules numerous. Fruits capsular, septicidally de-hiscent, splitting into 2 valves from the apex; seeds minute, horizontal, com-pressed or angular, winged or not, the testa reticulate.