Abstract The chemical composition of the leaf oils of Baccharis halimifolia L. and Eugenia foetida (Sw.) Willd. were studied by GC and GC/MS. Sixty-four compounds of the oil of B. halimifolia were identifed of which Î²-pinene (11.9%) was the major constituent. In the oil of E. foetida, 75 compounds were identifed of which caryophyllene oxide (14.8%) was the major component.