The entire genus of Clerodendrums have such beautiful showy flowers but not all are easy to grow.
This Clerodendrum calamitosum (common name: White Butterfly) is one of the easier and showier ones. When in bloom, the mass of white flowers give off an overpowering fragrance to its surroundings.
After the flowers are shed, the underlying remnant red sepals steal the limelight. When you have both the white flowers and red sepals in a grove of plants, they are just brilliantly eye catching.