One of my mother's favourite flowers was the Forget-me-not, here seen growing wild in a lane, but perhaps a garden escape.
The name, which I suppose signifies enduring love, seems to have come into English from the continent. The German is Vergissmeinnicht and in the Oxford English Dictionary I found this nice quotation from the 16c
G. Du Wes, Introductorie for to lerne Frenche [ ] A flour of forget me nat, vne fleur de ne moubliez mye.