Verbena bonariensis L. Verbenaceae. Purpletop Verbena. Distribution: South America. Verbena is Latin for the shoots of Laurel

bonariensis means 'from Buenos Aires'. Verbena officinalis is licensed for use in Traditional Herbal Medicines in the UK (UK Medicines and Healthcare Products Regulatory Agency (MHRA)) in compounds with other herbs for nasal congestion, mild stress symptoms and sleeplessness. Photographed in the Medicinal Garden of the Royal College of Physicians, London.