Mangrove or seacoast trees. Leaves simple, opposite, exstipulate. Flowers conspicuous, bisexual; l-3 or in corymbs, usually terminal, ebracteate. Sepals persistent, 4-8 united, segmented at the top; valvate. Petals 4-8, alternating with the sepals, or absent. Stamens 12-many, multiseriate. Ovary superior, 4-multilocular; placentation axile; style single. Fruit a berry or a capsule; seeds many.