Small evergreen bush, 5 - 6m. high, much-branched. Young shoots trianguar. Barkash-coloured. Leaves in whorls of 3, oblong-lanceolate, dark-green above.Inflorescence in terminal cyme; flowers pink, white or yellow. Follicles in pairs,nanow, cylindrical, straight. Seeds numerous, tipped with a coma of brownish hairs atone end (Vietnam)