abstract the composition of the essential oil of the leaves of plectranthus neochilus was analyzed by gc and gc/ms. the oil of p. neochilus predominantly comprised monoterpenoids (77.5%) of which citronellol (29.0%), citronellyl formate (11.0%), linalool (9.8%) and isomethone (9.2%) were the major constituents. furthermore, citronellyl propionate (3.4%) was the main sesquiterpene identified in the oil key word index: plectranthus neochilus lamiaceaeessential oil compositioncitronellolcitronellyl formate