A fairly common little spring flower is the Wood Forget-me-not (Myosotis sylvatica) which can be seen growing not just in woods, but in many places.
There are several stories about the origin of its name. One is about a German knight who picked a posy of the flowers for his lover when they were walking beside the Danube. He lost his footing and fell into the river and his armour prevented him from climbing out.  As he was swept downstream he shouted “forget me not” before drowning.
Another suggestion is that King Henry IV had it as one of his emblems and incorporated it into his heraldic badge, calling the plant “soveigne vous de moy”  (remember me)    It then gained a reputation that those wearing it would never be forgotten by their lovers.
A Greek legend said that Zeus had named all of the plants except one who shouted “forget me not” so he decided that was a good name.
In the language of flowers it symbolizes true and undying love and Alzheimer Societies around the world have adopted it as a symbol of memory loss to remember both people with this disease and those who care for them.