According to Greek myth Apollo chased the nymph Daphne (Greek:
Δάφνη, meaning "laurel"), daughter of Ladon, who had scorned him.
His infatuation was caused by an arrow from Eros, who was jealous
because Apollo had made fun of his archery skills. Eros also
claimed to be irritated by Apollo's singing. Daphne prayed to the
river god Peneus to help her and he changed her into a laurel tree,
which became sacred to Apollo. See Ovid. Metamorphoses. Book I:
452-567.
Source: www.wikipedia.org/wiki/Daphne