Leaf Oils of the EndemicMelicope(Rutaceae) of Lord Howe Island

The steam distilled leaf oil of the two species of Melicope (M. contermina and M. polybotrya) indigenous to Lord Howe Island have been examined by GC and GC/MS. Melicope contermina gave an oil in which the major components were limonene (33%) and elemol (23%). The oil yield was 0.1%. Melicope polybotrya gave a leaf oil in which the major components were geijerene (41%), pregeijerene (38%) and limonene (9%). The oil yield in this case was 0.6–1% based on fresh leaves.