Delonix regia is a tall deciduous tree with no thorns, up to more than 20 meters, and a diameter at breast height of up to 1 meter; the bark is rough and gray-brown; the crown is flat and round, with many branches and branches; the branchlets are often pubescent and have obvious bark. hole. Shallow roots, but Delonix regia products have a developed root system and strong wind resistance. Anti-air pollution. Strong germination and rapid growth.

leaf
Delonix regia leaves are two-fold even-pinnate compound leaves, 20-60 cm long, with stipules; the lower part of the stipule is clearly pinnately divided, and the upper part is bristly; the petiole is 7-12 cm long, smooth to pubescent Hair, upper face groove, base swelled in a cushion shape; pinnae opposite, 15-20 pairs, 5-10 cm long; 25 pairs of leaflets, densely opposite, oblong, 4-8 mm long, wide 3- 4 mm, sericeous on both sides, blunt apex, oblique base, full margin; midvein obvious; petiole short.
flower
Umbellate racemes are terminal or axillary; Delonix regia has large and beautiful flowers, 7-10 cm in diameter, bright red to orange-red, with 4-10 cm long pedicels; flower tray-shaped or short gyroscopic; sepals 5, Red inside, greenish-yellow at the edge; petals 5, spoon-shaped, red, with yellow and white variegation, 5-7 cm long, 3.7-4 cm wide, curled toward the calyx after flowering, slender stalk, about 2 cm long ; 10 stamens; red, varying in length, 3-6 cm long, curved upwards, thick filaments, lower part pilose, red anthers, about 5 mm long; ovary about 1.3 cm long, yellow, pilose , Sessile or short stalked, style 3-4 cm long, stigma small, truncated.
fruit
The pod is ribbon-shaped, flat, 30-60 cm long, 3.5-5 cm wide, slightly curved, dark reddish brown, dark brown when mature, with persistent style at the top; 20-40 seeds, horizontally oblong, smooth, hard , Yellow with brown spots, about 15 mm long and 7 mm wide. The flowering period of Delonix regia products is from June to July, and the fruit period is from August to October.