scarce light violet flowers of irises in spring

scarce light violet flowers irises spring iris spuria limniris spuriae butterfly flag rhizomatous herbaceous perennial creeping clumping slender stem spathe sepals pedicel sixlobed falls nature green foliage greenery vegetation outdoors plant growth botany ornamental leaf bud florescence inflorescence bloom flower blossom petal grassy season park garden flowerbed mauve purple blue pale pastel lilac late