abstract essential oils isolated from the aerial parts of two different lebanese wild populations of dittrichia graveolens were analyzed by gc and gc/ms. it was shown that around 90% of the total composition consisted of oxygenated compounds. the four major components identified were bornyl acetate (70.6-72.3%), t-cadinol (1.4-13.4%), borneol (2.7-12.4%), and caryophyllene oxide (1.9-2.3%), in addition to 21 minor ones. oils from the two populations possessed a high content of bornyl acetate but differed with respect to borneol and t-cadinol. in comparison with oils of d. graveolens from other populations, it was found that the oil of d. graveolens of lebanese origin was distinctly richer in oxygenated compounds. key word index: dittrichia graveolens inula graveolens asteraceaeessential oil compositionborneolbornyl acetatet-cadinol