 The leaves are opposite or in whorls of 3-5, ovate to lanceolate, 3–11 cm long.The flowers are in terminal, generally many-flowered clusters; the corolla has a large tube and four spreading lobes; flower colour ranges varies between species, with white, yellow, pink, and red all found.Several species of "Bouvardia" are grown as ornamental plants, both in the tropics and indoors as houseplants in temperate regions.