Phytochemical and Biological Traits of Endemic Betonica bulgarica (Lamiaceae)

Betonica bulgarica is an endemic species distributed in Bulgaria. The chemical composition of the essential oil analysed by GC–MS (Gas chromatography–mass spectrometry) and content trace elements ICP–MS (Inductively coupled plasma mass were determined. Additionally, a study on types distribution trichomes was done using microscope with camera. characterized high concentration sesquiterpene hydrocarbons, whose major compounds are β-caryophyllene (17.4%), germacrene D (9.9%), β-bourbonene (6.7%). contents manganese (177.2 µg/g) strontium (156.8 highest among investigated micronutrients. Two identified adaxial abaxial epidermises leaves B. bulgarica—covering glandular. Peltate stacked glandular four-celled head type B observed leaf surface.