Iris ruthenica 紫苞鸢尾
Iris ruthenica, sometimes called 'Ever Blooming Iris' (in the UK), 'Russian Iris', 'Pilgrim Iris' and 'Hungarian Iris' (in Europe), is a species in the genus Iris- subgenus Limniris. It is a rhizomatous perennial, with a wide distribution, ranging from eastern Europe to Central Asia. It has grass-like leaves, thick stem and violet or bluish lavender flowers which are marked with violet veining.