Which flower symbolizes remembrance in many cultures?

Forget-me-not

The Forget-me-not, a small blue flower, symbolizes remembrance and fidelity in love across many cultures. According to a medieval legend, a knight and his lady were walking along a river when he slipped and fell into the water. As he was drowning, he threw a bouquet of these flowers to his lady while shouting "Forget me not!" This romantic and tragic story has helped make the Forget-me-not a lasting symbol of eternal love and remembrance.