The chemical composition of the essential oils of 41 samples ofLippia ukambensisVatke were examined by GC/MS. Two chemotypes were identified on the basis of the camphor and 1, 8-cineole. The camphor chemotype ofL. ukambensiscontained camphor (37.3%) with only traces of 1, 8-cineole, while the other chemotype contained 1, 8-cineole (23.7%) and only 1.1% camphor. Of the twelve components which were present in both chemotypes, only eight were quantitatively significantly different. The major compound in the oil ofL. somalensiswas 1, 8-cineole (31.9%). By using fifteen components ofL. somalensisoil, its similarities and differences with those of the twoLippiachemotypes were compared.