Who knows the principle that crape myrtle shakes when touched?
crape myrtle
Alias Hundred Days Red, Full House Red, Itch Tree and Begonia Tree.
It belongs to Lysimachiaceae and Lagerstroemia.
Wei Zi has many beautiful names. Flowers are lush and colorful, with many colors, many purple, and purple is a positive color, so it is called Wei Zi. The white flower is Bai Wei (or Yin Wei), the red flower is Hong Wei, and the purple flower with blue color is Cuiwei. Lagerstroemia indica blooms from summer to autumn, and can bloom for 100 days, also called Hundred Days Red. Full house. Lagerstroemia indica is suitable for overlooking, and its trunk is smooth and difficult to climb, also known as monkey thorn tree. Lagerstroemia indica has one characteristic. If you gently scratch its trunk with your hands, although there is no wind in the earth, the branches of the whole tree are shaking from the base to the top, which seems to be very ticklish, commonly known as ticklish flowers, ticklish trees and ticklish trees. Why does the trunk scrape and tremble? Some people think that this is due to the bioelectricity of plants themselves; Some people think that Lagerstroemia indica is smooth and its branches are soft, and the whole body will shake at the slightest contact.
Lagerstroemia indica is a deciduous tree. The height of the tree can reach 10 meter, and the tree body can be folded. The bark is flaky and grayish green or grayish brown after peeling. The single leaf is opposite, oval, 3 ~ 7 cm long, and the ear is born at the branch end of the year. The flowers are white, red and purple, with a diameter of 3 cm and a long flowering period, from June to September. The capsule is nearly spherical and the seeds have wings.
Lagerstroemia indica has the characteristics of slow growth, long service life, pruning resistance, soft stems, thick branches, exposed leaves, easy healing between branches and easy modeling. It is a good material for making bonsai, and it can also be used as cut flowers. It takes a long time to plant flowers in bottles. Suitable for garden planting. It has strong resistance to harmful gases such as sulfur dioxide, hydrogen fluoride and chlorine, and can absorb a certain amount of harmful gases. The sulfur absorption per kilogram of Lagerstroemia indica leaves is about 10g. Lagerstroemia indica also has a strong dust absorption ability. In a cement plant 200 ~ 250 meters away from the pollution source, leaves can absorb 4.42 grams of dust per square meter. Lagerstroemia indica is a good material for greening factories, cities and residential areas.
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