What is the scientific name of the itch tree?

Pruritus tree, scientific name Lagerstroemia speciosa, small deciduous tree, smooth stem, oval leaves, six petals, reddish, purple or white, flowering for more than three months, so it is also called centennial red. Lagerstroemia indica is produced in south-central China, and also distributed in India, Malaysia and Australia, which is ornamental. This kind of tree has a strange feature, that is, when people touch its smooth stem with their hands, the branches and leaves will shake immediately, as if it itches unbearable, so it is called prurigo tree.