abstract the essential oils of the inflorescences and leaves of tanacetum vulgare l. var. vulgare collected at full flowering in 10 habitats in vilnius district were investigated. forty-one constituents were identified. the oils were distributed among four chemotypes. the major constituents of the camphor chemotype (10 samples) were camphor (22.3-41.4%) and 1,8-cineole (10.6-26.4%); the -thujone chemotype (six samples) was found to be dominated by -thujone (25.7-71.5%) and 1,8-cineole (11.3-22.3%); the major constituents of the 1,8-cineole-chemotype (three samples) was dominated by 1,8-cineole (24.5-32.7%) and camphor (8.3-23.8%); the artemisia ketone chemotype (one sample of inflorescences) predominantly featured artemisia ketone (30.5%) and camphor (23.0%). the oil from inflorescences of the above chemotypes contained higher amounts of the first major component and oxygenated monoterpenes (mean 83.6%) than the leaf oils (mean 73.7%). an opposite correlation was noticed for mono- and sesquiterpenes hydrocarbons and oxygenated sesquiterpenes. the oils of the inflorescences and leaves were of the same chemotype in eight habitats, but they contained different amounts of the main components.