“…Chemovariation is a well-documented fact in the essential oils of Tanacetum species, especially for T. vulgare (Collin, Deslauriers, Pageau, & Gagnon, 1993;De Pooter et al, 1989;Hendriks et al, 1990;Judzentiene & Mockute, 2004;Keskitalo, Pehu, & Simon, 2001;Rohloff, Mordal, & Dragland, 2004). Also, in more recent years, chemovariation in other Tanacetum species has been reported, such as in the cases of Tanacetum chiliophyllum var.…”