abstract the constituents of the secretory hairs of agastache foeniculum kuntze leaves were sampled by means of glass microneedles and analyzed by gc and gc/ms. the main components of the secretory mixture were methyl chavicol (59.5%) and (e)-anethole (19.6%). the composition of the secretory mixture was also compared with the composition of the essential oils obtained by hydrodistillation of the leaves. key word index: agastache foeniculum labiataesecretory hairgc-microneedle shuttle analysisessential oil compositionmethyl chavicol(e)-anethole