Abstract: The Lagerstroemia indica is the important ornamental flower in summer. There are more than fifty varieties of Lagerstroemia indica in China at present. The Lagerstroemia indica varieties were investigated in Shaoyang City. 100 L. indica varieties were found that belong to L. indica Amabilis Group, L. indica Rubra Group, L. indica Alba Group and L. indica Bicolor Group. The information of 69 L. indica varieties was collected in details which are newly found. Because of the limited length of a paper, the details were reported in three papers. 20 new varieties of L. indica Rubra Group are reported in the paper.