Forget-me-not
Forget-me-not, any of various annual or perennial wild and garden flowers (genus Myosotis), native to North America, Europe, and Asia. Most have pink flower buds that become blue as the flower opens. It has long been a symbol of constancy. Yellow forget-me-not is a plant of western deserts.
Additional topics
21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Forest to Gabon