Teucrium marum L. Lamiaceae Cat Thyme Distribution: Europe. Teucrium is named after Teucer (who lived in the era between 1400 and 1000 BC) the first King of Troy. Dioscorides named a medicinal herb after Teucer, and Linnaeus consolidated this in 1753. Assume property is the same as Germander, Teucrium chamaedrys. Photographed in the Medicinal Garden of the Royal College of Physicians, London.