What is "ehlonna"

In the World of Greyhawk campaign setting and in the default pantheon of deities for the third edition of the Dungeons & Dragons role-playing game, Ehlonna is the goddess of Forests, Woodlands, Flora, Fauna, and Fertility. Ehlonna is known to the elves as "Ehlenestra." Her holy symbol is a rampant unicorn or a unicorn's horn.