Abstract Six essential oils of a weedy Asteraceae, Cassinia laevis were analyzed by capillary gas chromatography-mass spectrometry (GC/MS). Flower oils were composed Î±-pinene (13.6â20.7%) and spathulenol (8.0â12.0%). Leaf oils were mainly Î±-pinene (8.5â22.6%) and ledol (37.5â53.6%).