Viscum album L (Mistletoe), c1870-1920. Harold Drinkwater (1855-1925) was an English physician largely remembered as an amateur botanist and exemplary artist of botanical subjects. Druids revered as sacred any Oak containing mistletoe. In medieval times mistletoe could keep witches at bay, lead you to treasure and cure epilepsy. As an evergreen mistletoe symbolised eternal life and fertility.