Abstract The chemical composition of leaves and flowers essential oils of Lantana camara from India were analysed by GC and GCâMS, which resulted in the identification of 71 and 64 constituents, representing 99.0% and 97.0% of the oils, respectively. The major constituents in the leaf oil were germacreneâD (20.5%), γâelemene (10.3%), βâcaryophyllene (9.4%), βâelemene (7.3%), αâcopaene (5.0%) and αâcadinene (3.3%), while the major constituents in the flower oil were βâelemene (14.5%), germacreneâD (10.6%), αâcopaene (10.7%), αâcadinene (7.2%), βâcaryophyllene (7.0%) and γâelemene (6.8%). A comparison with the chemical composition of L. camara oils of different origin showed that our oils were significantly different from others with respect to their major constituents. Copyright © 2001 John Wiley &amp; Sons, Ltd.