Botanical name: Lagerstroemia langkawiensis
Common name: Crepe Myrtle
Family: Lythraceae
Origin: Malaysia
It is endemic to Langkawi Island, Western Malaysia.
Similar plants: Lagerstroemia langkawiensis (Crepe Myrtle)
Link to this plant:
https://toptropicals.com/catalog/uid/lagerstroemia_langkawiensis.htm