(Λεύκη), a nymph, a daughter of Oceanus, who was carried of by Pluto; and after her death, was changed into a white poplar in Elysium. (Serv. ad Virg. Eclog. 7.61.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890