Orchamus was a king in Greek mythology

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

. He had two daughters: Leucothea

Leucothea

In Greek mythology, Leucothea , "white goddess") was one of the aspects under which an ancient sea goddess was recognized, in this case as a transformed nymph....

 and Clytia. Leucothea loved Apollo

Apollo

Apollo is one of the most important and complex of the Olympian deities in Greek and Roman mythology...

, the sun god. Apollo disguised himself as Leucothea's mother to gain entrance to her chambers. Clytia, jealous of her sister because she wanted Apollo for herself, told Orchamus the truth, betraying her sister's trust and confidence in her. Enraged, Orchamus ordered Leucothea buried alive. Apollo refused to forgive Clytia for betraying his beloved, and a grievous Clytia wilted and slowly died. Apollo changed her into an incense plant, either heliotrope or sunflower, which follows the sun every day.