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Iris uniflora

Iris uniflora is a species in the genus Iris and in the subgenus Limniris. It is a rhizomatous perennial, from Russia, Mongolia, China and Korea. It has thin grass-like leaves and stems, and purple, blue-purple or violet flowers. It is cultivated as an ornamental plant in temperate regions.

Description
Iris uniflora differs from Iris ruthenica by having thick resilient bracts (leaf on flower stem, where a flower emerges) that remain green (or yellow-green), until the seeds mature. On Iris ruthenica, the bracts usually dry out and die, after flowering. It has been examined several times to find its chromosome count: 2n=48, Scolovskaya; 2n=42, Doronkin 1984; 2n=16, Sok & Prob. 1986; 2n=42, Zakharjeva, 1990. == Taxonomy ==
Taxonomy
, Paris It is written as 单花鸢尾 in Chinese script and 'dan hua yuan wei' in China. It has the common name of 'rock kris' in Tibet and the Tibetan name of 'Yuki Ozawa'. It is also known as 'single-flowered iris' in Russia. It was first widely published by Peter Simon Pallas in 'Jahrbücher der Gewächskunde' (published in Berlin and Leipzig) in 1820. It was first found and named by Link, but he did not publish it widely. In 1892, it was thought to be a variety of Iris ruthenica (Iris ruthenica var. uniflora) by Baker (in his book, Handbook Irid. 4. 1892). which he noted was "a form with narrow leaves (2—6 mm wide at anthesis, ca. 10 mm wide in fruit". It was described as Iris uniflora var. caricina by Kitagawa in the Botanical Magazine (of Tokyo) in 1935, In 1981, Brian Mathew notes in his book The Iris that "The Flora of the USSR separates this as a distinct species, distinguished from Iris ruthenica". ==Distribution and habitat==
Distribution and habitat
Iris uniflora is native to temperate regions of Asia. Range It is found in Central Asia (including Transylvania),