Jacq., Enum. Syst. Pl. 3. 1760.
Succulent epiphytic shrubs or small trees, unarmed, glabrous. Leaves opposite, petiolate to subsessile, venation not lineolate and often not visible; stipules interpetiolar, ligulate to oblanceolate, erect and flatly appressed, caducous. Inflorescences terminal, sometimes bracteate, 1(3)-flowered. Flowers large, showy, homostylous, protandrous, diurnal or nocturnal, sometimes fragrant, sessile or pedunculate. Hypanthium cylindrical to ellipsoid. Calyx limb none or deeply 4--10-lobed, without calycophylls; corolla salverform or funnelform to ventricose, red, green, or white, glabrous internally and externally, lobes 4--10, convolute in bud. Stamens 4--7, inserted near top or middle of corolla tube; anthers narrowly oblong, included, dorsifixed near base. Ovary 2-locular; ovules numerous in each locule, on axile placentas. Fruit capsular, cylindric or narrowly oblong, woody, smooth to longitudinally ridged, septicidally dehiscent from the apex. Seeds papery, small, flattened, fusiform, marginally winged and with a tuft of long filaments at the apex.