Purple Allamanda flower (Allamanda blanchetii) with green leaves and cloudy sky background. Violet allamanda flower is a species of flowering plant.

Allamanda blanchetii (purple allamanda, violet allamanda; syn. Allamanda violacea) is a species of flowering plant in the family Apocynaceae. It is native to Brazil. It is cultivated as an ornamental plant. Allamanda is a genus of flowering plants in the dogbane family, Apocynaceae. They are native to the Americas, where they are distributed from Mexico to Argentina. Some species are familiar as ornamental plants cultivated for their large, colorful flowers. Most species produce yellow flowers; A. blanchetii bears pink.