"Iris flowers have an unusual structure and appearance. The petals resemble a classic fleur-de-lis symbol, with some petals rising up while others cascade down. The center petals stand upright and are known botanically as standards. These tall petals stand like signal flags, waving in potential pollinators." ( https://www.hgtv.com/outdoors/flowers-and-plants/flowers/iris-flower-meaning)
