Iris was the name by which the Greeks called the messenger goddess of Olympus. The German iris represents the lost love and sorrow, because Iris had the task of guiding young people who died on their way to the afterlife. The German iris are used in landscaping since Roman times, with the Muslims who have extended their cultivation in the Mediterranean, associated precisely to the cult of the dead. In the Andalusian poetic genre about gardens that was known as rawdiyyat -de Rawd, 'gardens' in Arabic-, the blue iris is usually compared with a turquoise and its color, like the sky, was considered superior to his sister the white lily called in al-Andalus sawsan. It is an emblematic flower in many European states, in France, the fleur-de-lys, which is nothing but a stylized lily is its heraldic emblem; in Florence it is a white lily, native to the Italian city, in which walls they are said to bloom. Apart from its symbolic and ornamental value, lilies have been cultivated for use in cosmetics and pharmacopoeia. They are a temptation for insects that enter in search of nectar inside, specially designed in spiral form so as their guests get covered with pollen and carry it to another flower.