Bacopa Flower (Sutera cordata). 'Snowstorm giant snowflakes'
Sutera cordata also known by the name Bacopa or Ornamental Bacopa. It is a tender perennial forming a ground cover, but often used in hanging baskets. Small dark green heart shaped leaves and small round five-petaled white flowers at the branch tips can be found year round, but at its prime in spring.
If you want more information about this flower, just search the plant's Latin (botanical) name on Google: