In Rohan on the western side of the barrows of their kings grew small white flowers in the grass, so many that they were compared to drifted snow and countless stars. Gandalf compared them to bright eyes in the grass. He told us they blossom in all seasons of the year, growing where dead men rest. He said they were called Evermind, and were named Simbelmyne in Rohan.
The Two Towers: "The King of the Golden Hall"