abstract thymus pulegioides l. ssp pulegioides samples were collected in 1995-1999 in vilnius city according to their odors. five chemotypes of the essential oils were identified: 1) citral/geraniol chemotype ("lemon" odor): citral (neral + geranial, 18.4-30.2%), geraniol (14.4-23.2%), -caryophyllene (9.4-13.1%) and nerol (5.5-12.1%); 2) geraniol chemotype ("sweet" odor): geraniol (23.1-25.5%), -caryophyllene (10.8-13.5%) and -bisabolene (9.5-10.2%); 3) caryophyllene chemotype ("spicy" odor): -caryophyllene (18.0-19.7%), -bisabolene (14.5-15.9%), germacrene d (12.5-14.6%) and (e)-nerolidol (8.2-13.8%); 4) -terpinene/p-cymene chemotype ("hydrocarbon" odor): -terpinene (15.5-17.2%), p-cymene (7.7-17.0%), carvacrol (4.6-13.5%) and -caryophyllene (9.6-10.5%); 5) carvacrol chemotype ("phenolic" odor): carvacrol (24.4-33.3%), -caryophyllene (9.5-14.9%) and -bisabolene (10.5-12.9%). the caryophyllene and -terpinene/p-cymene chemotypes were not observed earlier in thymus pulegioides l. key word index: thymus pulegioides labiataeessential oil compositionp-cymene-terpineneneralgeraniolgeranial-caryophyllene-bisabolene