<p xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML">The genus Thymus, member of the Lamiaceae family, contains about 400 species of perennial aromatic, evergreen or semi-evergreen herbaceous plants with many subspecies, varieties, subvarieties and forms [<bold><xref rid="R1" ref-type="bibr">1</xref></bold>]. In Romania, the Thymus genus contains one species cultivated as aromatic plant (Thymus vulgaris) and other 18 wild species [<bold><xref rid="R2" ref-type="bibr">2</xref></bold>]. T. vulgaris (thyme), locally known as &#8220;cimbru&#8221;, is widely used in the Romanian folk medicine for its expectorant, antitussive, antibroncholitic, antispasmodic, anthelmintic, carminative and diuretic properties.</p>