This is the famous iris japan which forms dense tufts of long, narrow upright leaves. Variety with large pink flowers. It likes moist or fresh land drained the summer but in winter. Massive, edges of pieces of water.
Iris japanese forming dense tufts of long leaves (deciduous) erect and narrow of water green and white cream. Large purple flowers with purple reflections. Wet and cool summer but drained soil in winter. Massive, edges of pieces of water.