19. Mesua ferrea plants ( नागकेसर , नागचम्पा )
Mesua ferrea, the Ceylon ironwood, Indian rose chestnut, or cobra saffron, is a species in the family Calophyllaceae. This slow-growing tree is named after the heaviness and hardness of its timber. It is widely cultivated as an ornamental due to its graceful shape, grayish-green foliage with a beautiful pink to red flush of drooping young leaves, and large, fragrant white flowers. It is native to wet, tropical parts of Sri Lanka, India, southern Nepal, Burma, Thailand, Indochina, the Philippines, Malaysia and Sumatra, where it grows in evergreen forests, especially in river valleys. In the eastern Himalayas and Western Ghats in India it grows up to altitudes of 1,500 m, while in Sri Lanka up to 1,000 m. It is national tree of Sri Lanka and state flower of Tripura and Mizoram.