Lagerstroemia speciosa，Lagerstroemia speciosa (L.) Pers.

Lagerstroemia speciosa (L.) Pers.， It is a tree plant of the genus Lagerstroemia in the family Crassulaceae, with gray and smooth bark; Branchlets cylindrical, hairless or slightly covered with furry batch like hairs; Leaves are leathery, elongated elliptical or ovate elliptical, sparsely lanceolate, connected by curved arches at the leaf edges; Thick petiole; Flowers are light red or purple; Petals are nearly circular and hardly wrinkled; Ovary spherical, hairless; Capsule spherical or inverted oval in shape; Most seeds; The flowering period is from May to July, and the fruiting period is from October to November.

Lagerstroemia speciosa is native to Sri Lanka, India, Malaysia, Vietnam, the Philippines, and is cultivated in Hainan, Guangdong, Guangxi, Fujian, and Taiwan in China. Lagerstroemia speciosa prefers light, warm and humid environments, is slightly tolerant to shade, and has certain cold and drought resistance; The soil requirements are not strict, but it is advisable to use sandy loam soil with deep, loose, fertile, and well drained soil layers; The propagation methods include sowing, cutting, or tillering. Lagerstroemia speciosa is brightly colored and has a long flowering period. It is not only used for greening parks and streets, but also for beautifying courtyards, purifying the air, and improving the local microclimate of courtyards.