CONCLUSIONS The composition of essential oil of M. aquaticais diverse according to different regions of the world. However, our analysis of this plant essential oil by GC and GC/MS identiied 43 components and the main compounds are the monoterpenes. The anatomical studies carried out on young fresh stems and leaves of mentha aquaticashow the presence of two types of trichomes at different developmental stages . The irst is the simple hairs (covering trichomes) and the second is the secretive glands. Under light microscope thesesecretive glands were: big glandular peltate trichomes “multicellular oval head” and small glandular capitate «unicellular globule head”. It would be more beneicial if research is carried out in different region and comparisons are made to gain better understanding of this plant
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