abstract the oils from the leaves of hyptidendron canum and aerial parts of hyptis velutina were analysed by gc and gc/ms. the major constituents of h. canum oil were spathulenol (11.6%), globulol (14.4%) and longiborneol (35.3%), while the oil of h. velutina contained -caryophyllene (13.4%), bicyclogermacrene (29.3%) and -muurolene (47.4%) as main components. key word index: hyptidendron canum hyptis velutina lamiaceaeessential oil compositionspathulenolglobulollongiborneol-caryophyllene-muurolenebicyclogermacrene