Habit of Lagerstroemia speciosa origin

Yang Wanli, a poet in the Song Dynasty, praised: "It is better to be infatuated, especially to expose and oppress the wind." Who knows that flowers bloom for a hundred days and crape myrtle grows for half a year. "At present, the most complete variety of Lagerstroemia indica is located in the Lagerstroemia indica base in Jiangsu: the branch point of Lagerstroemia indica 1.5m, the diameter of clustered Lagerstroemia indica10/00, and the number is about1000000. Xue Hui in the Ming Dynasty also wrote: "Lagerstroemia indica has the longest flowering period, lasting for ten days, and new flowers are constantly branching in summer. "Northerners call crape myrtle" monkey thorn ",which means that the tree is too slippery for monkeys to climb. Its beauty lies in its lack of bark. Scarcity is the most precious thing. How many trees in Qian Qian are skinless? The trunk of young Lagerstroemia speciosa has an annual epidermis, which falls off by itself every year. The trunk looks fresh and smooth after the epidermis falls off. Old Lagerstroemia indica, the tree body does not revive the epidermis, and the tendons are quite exposed. Very smooth, very smooth. When Lagerstroemia indica grows up, the trunk epidermis falls off and is smooth and skinless. If people touch it gently, they will immediately shake the leaves, tremble all over, and even make a weak "giggle" sound. This is a systemic reaction of its "itch", which is really amazing.

Lagerstroemia indica is drought-tolerant, waterlogging-tolerant, moist, light-loving and fat-loving. It has strong resistance to sulfur dioxide, hydrogen fluoride and nitrogen, and can inhale harmful gases. According to the determination, each kilogram of leaves can absorb sulfur 10g and grow well. Lagerstroemia indica can also adsorb dust. In a cement plant 200 ~ 250 meters away from the pollution source, leaves can absorb 4042 grams of dust per square meter. Therefore, it is the ideal tree species for urban, industrial and mining greening, and can also be used as bonsai. Lagerstroemia indica also has medicinal effects. Li Shizhen discussed in Compendium of Materia Medica that its bark, wood and flowers have the functions of promoting blood circulation, dredging meridians, relieving pain, reducing swelling and detoxifying. Seeds can be used as pesticides to kill pests. Leaves can cure white dysentery, flowers can cure postpartum hemorrhage, children's rotten head and fetal poison, and radically cure carbuncle, swelling and sore poison, which can be described as treasure all over. In ancient China, there was Wei Zi Dou Shu, a method of calculating numerology according to Wei Zixing.