(Πίτυς), a nymph beloved by Pan, was changed into a fir tree. (Lucian, Dial. Dcor. 22. 4; Verg. Ecl. 7.24. with Voss's note.)
[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