Classification of the genus mentha on the basic of morphology is very difficult since their biodiversity and the genus mentha is quite easy to turn into morphological variation, or develop to hybrid species. These species chemical composition of essential oils have been intensively studied. On the basic of the major constituents, the following chemotypes of wild mints from Vietnam were found: piperitone oxide -pulegone, pulegone - menthol, menthylacetate - menthol, menthol - isomenthone, dihydrocarvylacetate - carvone - limonene, limonene - carvone - dihydrocarvone. It is necessary now for governmental offices and people from country side and high mountain to take an active role in the conservation of this genus for their economical and ecological reasons.
Mentha ; Species Specificity