the volatile oil of ocimum kilimandscharicum guerke, a perennial undershrub of labiatae, grown in indiana was analyzed by gc and gc/ms. the essential oil content varied between the leaves (0.77-1.12% dry wt. basis) and the flowers (1.96-2.8% dry wt. basis). seventeen constituents were identified in the oil. oil composition was similar between the leaves and flowers with linalool as the major constituent (leaves (41.94%), flowers (58.85%)). other major constituents included camphor (leaves (17.02%), flowers (15.82%)) and 1,8-cineole (leaves (10.18%), flowers (6.38%)). we report a 'linalool-camphor' chemotype of o. kilimandscharicum.