Delonix regia is named after "the feather of a flying phoenix and the crown of a phoenix in the flower". It is a deciduous tree of the genus Delonix regia of the leguminous family, which can reach 20 meters in height. The canopy is broad. Two pinnately compound leaves, lobules oblong. Flowering in summer, racemes, flowers are large, red and shiny. The pods are woody and can grow up to 50 cm in length. Delonix regia is known as one of the most colorful trees in the world because of its bright red or orange flowers and bright green pinnate compound leaves.

Delonix regia is the national tree of the Republic of Madagascar in Africa. It is also the city tree of Xiamen City, Tainan City, Taiwan, the city flower of Shantou City, Guangdong Province, the city flower of Zhanjiang City, Guangdong during the Republic of China, and the school flower of Shantou University and Xiamen University.
The Delonix regia plant is tall, drooping due to the horizontal spread of the canopy, thick, broad and windy, and acts as a shade tree in the tropics. It is a high temperature and multi-day environment, and it can thrive in the sun. Distributed in southern and southwestern China, Madagascar of origin and tropical places in the world.