forget-me-not n.

the flowering plant (Myosotis palustris), 1530s, translating Old French ne m'oubliez mye; in 15c. the flower was supposed to ensure that those wearing it should never be forgotten by their lovers. Similar loan-translations took the name into other languages: German Vergißmeinnicht, Swedish förgätmigej, Hungarian nefelejcs, Czech nezabudka.