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''Iris ensata'' (Japanese iris, Japanese: ''hanashōbu'') is a species of ''Iris'' native to Japan, China, Korea and Russia, and widely cultivated as an ornamental plant. Japanese iris may also refer to other culturally significant species of ''Iris'' native to Japan. The bluish purple color of the flowers of the Japanese garden iris is an example of the copigmentation phenomenon.〔Anthocyanin-flavone copigmentation in bluish purple flowers of Japanese garden iris (Iris ensata Thunb.) T. Yabuya, M. Nakamura, T. Iwashina, M. Yamaguchi and T. Takehara, EUPHYTICA, Volume 98, Number 3, 163-167, 〕 ==Cultivation== ''Iris ensata'' is extensively grown as an ornamental plant in gardens and parks throughout the temperate zones of the world. The grows in the wet land and is the most extensively cultivated variety in Japanese gardens. According to the place where it was cultivated, it is classified into the Edo (Tokyo), Higo (Kumamoto Prefecture), Ise (Mie Prefecture), American (U.S.), and other series. Several cultivars have been selected, of which 'Rose Queen'〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=1036 )〕 and 'Variegata'〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=1036 )〕 have gained the Royal Horticultural Society's Award of Garden Merit. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Iris ensata」の詳細全文を読む スポンサード リンク
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