What is the difference between pointed leaves and round leaves of Lagerstroemia indica?

Lagerstroemia speciosa leaves slightly sharp, Lagerstroemia speciosa leaves round. Lagerstroemia indica has beautiful posture, smooth trunk and bright color. It blooms in summer and autumn with a long flowering period. Therefore, it is known as "Hundred Days Red" and "Summer Blue and White Flowers Full of Red". It is a good bonsai for ornamental flowers, stems and roots. Roots, bark, leaves and flowers can be used as medicine.