One more thing I´ve just found
Lemon verbena (Aloysia triphylla L.) of the verbena family, sometimes called "queen of the lemons", is a tropical shrub native to Central and South America introduced to Europe by Spanish explorers. Not considered a medicinal herb, but rather valued for its unparalleled fresh lemony scent and essential oils. Also called Lemon verbena (Lippia citriodora, Kunth.) is a native of the Americas that has spread throughout the world. Not found medicinally helpful. The Chinese use Verbena officinalis, called vervain. The Chinese name is Ma-pien-ts´ao. Used for dropsy, malaria, dysentery.