Iris, or Iris (lat. ÃÂris) - genus of perennial rhizomatous plant Iris family or Kasatikovye (Iridaceae). Irises are found on all continents. The genus contains about 800 species with a rich variety of shapes and colors. For this he received its name (from the Greek. á¼¾ÃÂá¿ÂÃâ - rainbow).