During Tuor's arrival in Gondolin, he found these flowers and called them uilos. These flowers also grew on Elendil's tomb in Amon Anwar and were called alfirin. Legolas also uses the name alfirin to refer to an apparently different type of flower, described as "golden bells", which could be found in Lebennin.
Simbelmynë is an Old English term which means "evermind" and was the term used commonly in Rohan. The Elves called it uilos ("snow white") and alfirin ("immortal").