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}} ''Iris setosa'' is a species in the genus ''Iris'', it is also in the subgenus of ''Limniris'' and in the ''Iris series Tripetalae''. It is a rhizomatous perennial from a wide range across the Arctic sea, including Alaska, Maine, Canada (including British Columbia, Newfoundland, Quebec and Yukon), Russia (including Siberia), northeastern Asia, China, Korea and southwards to Japan. It has tall branching stems, mid green leaves and violet, purple-blue, violet-blue, blue, to lavender flowers. There are also pink and white forms. It is one of the three ''Iris'' species in the ''Iris'' flower data set outlined by Ronald Fisher in his 1936 paper "The use of multiple measurements in taxonomic problems" as an example of linear discriminant analysis. ==Description== Iris setosa is similar in form to a miniature Japanese Iris,〔 or a dwarf version of iris sibirica but a shorter lived version.〔 The shallowly rooted, large, branching rhizomes spread over time to create large clumps.〔〔〔 The rhizomes are grey-brown, thick, and are covered with old (maroon-brown) fibrous leaf remains (of last seasons leaves).〔〔〔〔 It has branched stems, which are very variable in height.〔 Ranging from 10 cm (5inches) up to 1 m (3 ft) tall.〔〔〔〔〔〔〔〔〔〔〔 The larger plants can grow beyond the height of the leaves.〔〔〔 The roundish stems are between 1.5–9 cm in diameter with 1 to 3 branches.〔〔 It has mid-green leaves,〔〔〔 which are grass-like,〔 and lanceolate (sword-shaped).〔〔 They have a purplish tinged base〔〔〔〔 and the leaves can measure 30–60 cm (12–24 in)long by 0.8-2.5 cm wide.〔〔〔〔〔 It has 3-4 flowers per stem (between 6 and 13 for the whole plant,〔〔 in groups of 3〔〔) and it blooms between June and July.〔〔〔〔〔〔〔 The large flowers are between 5–8 cm (3–6 in) across,〔〔〔〔 usually 7–8 cm.〔〔 The come in a range of shades of blue, which can depend on the location.〔 Ranging from violet,〔〔〔〔 purple-blue,〔〔〔 violet-blue,〔〔 blue,〔〔〔〔〔〔 to lavender.〔 Very occasionally, there are pink or white forms.〔〔 The sepals can be deeply veined dark purple with a yellow-white signal (centre).〔〔 The standards are so small, that they are reduced to bristles.〔〔 Which gives the flower, a flat, three petaled appearance.〔〔 The perianth tube (floral tube) is about 1 cm long,〔〔〔〔 normally dark blue-violet to red-purple with darker veins.〔 The plant is self-fertile,〔 being hermaphrodite (have both male and female organs) and it is pollinated by insects.〔 The stamens are about 2 cm long, the anthers are purple and the ovary about 1 cm long.〔 After the flowers have finished blooming, the seeds ripen between August and September.〔〔 They are cased within a green seed capsule, which is loculicidal,〔〔 or cylindrical,〔〔 (measuring 2.5 cm by 1.25 cm), which turns pale brown when it ripens.〔〔 It has 6 ribs along its sides.〔 The pale brown seeds 〔〔 (about 2-3mm in size)〔 have a distinct raised raphe (tissue ridge) the length of one edge.〔〔 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 setosa」の詳細全文を読む スポンサード リンク
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