Nyctanthes (niktan′thez)

[NL. (Linnæus, 1737), so called called because the flower opens at evening and closes at sunrise; Oleacea and the tribe Jasmine a. There is but one species, N. Arbor - trist is, native of eastern India, and widely cultivated in the tropics, with rough opposite ovate leaves, and showy flowers in terminal cymes, white with an orange and tube. The flowers only at night, and the end of the rainy season load the air with an exquisite fragrance. They afford a perfumers' e ence, and an impermanent orange dye. It is the hirsinghar-tree of India, otherwise named night - jasmine and tree - of -sadne .