Iris setosa, known as the beachhead iris, bristle-pointed iris, or a number of other common names, is a species of flowering plant in the genus Iris of the family Iridaceae. It belongs to the subgenus Limniris and the series Tripetalae. It is a rhizomatous perennial found in a wide range across and below the Arctic Circle, including in Alaska, Maine, Canada (including British Columbia, Newfoundland, Quebec and Yukon), Russia (including Siberia), China, Korea, and Japan. The plant has tall branching stems, mid green leaves and violet, purple-blue, violet-blue, blue, or lavender flowers, or, rarely, pink or white flowers.

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