The flower with Bulgarian name Silivriak is a perennial plant with dark green serrated leaves, its colors are purple. Grows on limestone rocks. It is a Balkan endemic, a remnant of ancient flora resist changes in ice ages. Legend has it that sprouted from the blood of Orpheus. According to another legend, Rhodope, the little purple flower is born from the tears of Orpheus lost in his beloved Eurydice.
Silivryak – a symbol of the Rhodopes is the only one in the whole world. Although it is not a desert dweller, he is the world record holder withstand drought. Botanists have discovered that can survive 31 months in dried herbarium, and then starts again when moistened to develop normally. Therefore, when scientists at the botanical gardens in the world are turning to their Bulgarian counterparts haberlea send them, they do not get seeds, as is done in such cases, and herbarized plants.