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:''For the ''tiger iris'', see Tigridia pavonia.'' }} ''Iris tigridia'' is a species in the genus ''Iris'', it is also in the subgenus of Iris and in the ''Pseudoregelia section''. It is a rhizomatous perennial, from Kazakhstan, Russia, Mongolia and China. It has dark green or greyish green, grass-like leaves, a short slender stem and a single (or rarely 2) flowers that are either violet, dark blue, blue-purple, dark purple, mauve, lilac, lavender, or light purple. It is cultivated as an ornamental plant in temperate regions. ==Description== It has small compact rhizomes.〔British Iris Society (1997) 〕〔(【引用サイトリンク】url=http://efloras.org/florataxon.aspx?flora_id=2&taxon_id=200028221 )〕 Which are brown,〔(【引用サイトリンク】url=http://irisbotanique.over-blog.com/ )〕 yellow or white, fibrous.〔(【引用サイトリンク】url=http://www.plants.csdb.cn/eflora/view/search/chs_contents.aspx?CPNI=CPNI-252 )〕 Underneath the rhizome are numerous fleshy, secondary roots,〔 which are between 3 – 4 mm wide.〔 On top of the rhizome are the dense, brown,〔(【引用サイトリンク】url=http://www.icc.mn/Plants/eplant/pl100.htm )〕〔(【引用サイトリンク】url=http://flower.onego.ru/other/iris/irie_cae.html )〕 or dark brown, fibrous remains of last seasons leaves. It creates small tufted plants.〔〔 It has dark green,〔 or greyish green leaves,〔〔〔 that can grow up to between long, and between 1.5 and 6 mm wide.〔〔〔James Cullen, Sabina G. Knees, H. Suzanne Cubey (Editors) 〕 At the time of flowering, they are long,〔 and between 1.5 and 2 mm wide.〔 They then elongate to the final height of up to 30 cm tall.〔〔 They are grass-like, they can be erect and linear,〔〔 or slightly curved.〔〔 They do not have a midvein,〔〔 but have an acuminate apex (pointed) tip.〔〔〔 This form separates them from ''Iris potaninii''.〔 In mild temperate areas, they are evergreen (lasting through the winter).〔 It has a slender stem,〔〔 that can grow up to between tall. Sometimes, the stem seems to only just appear above ground.〔〔〔 The stem has 2,〔 yellow-green, (scarious) membranous, spathes (leaves of the flower bud).〔〔 They are lanceolate and between long,〔 with a pointed tip.〔 The stems hold 1, (or rarely 2,〔) terminal (top of stem) flowers, blooming between April and May,〔〔 normally in May.〔〔〔 The flowers are in diameter,〔〔〔 come in shades of violet,〔〔 dark blue,〔〔 blue-purple,〔〔〔 dark purple,〔 mauve,〔 lilac,〔〔 lavender,〔〔〔 or light purple.〔 The flowers have darker spots, veining or mottling.〔〔〔 Like other irises, it has 2 pairs of petals, 3 large sepals (outer petals), known as the 'falls' and 3 inner, smaller petals (or tepals), known as the 'standards'. The falls are obovate, and long,〔〔〔 and 1-1.5 cm wide.〔〔〔 It has in the centre of the petal, is a white patch,〔 and a beard,〔〔〔 with blue-white,〔 or white hairs,〔 tipped with yellow,〔〔〔 or yellow hairs.〔〔 The erect,〔 or tilting outwards,〔 standards are oblanceolate,〔〔 and long and 0.4-0.7 cm wide.〔〔〔 They are darker shade than the falls.〔 It has a 5 mm long pedicel,〔〔 and 2 cm long perianth tube,〔〔〔 that widens out at the top.〔〔 It has 2.3-2.5 cm long styles,〔〔〔 that have triangular crests.〔〔 It has blue pollen,〔 and a long, green ovary, that is up to 1.2 cm long.〔〔〔 It has 1.5 cm long stamens.〔〔 After the iris has flowered, between June and July,〔 or up to August,〔〔 it produces an ovoid,〔〔 or fusiform (spindle shaped),〔〔 seed capsule. That is between long,〔〔〔 and 1.5–2 cm in diameter.〔 It has a beak like top, attached to the remains of the perianth tube.〔〔〔 Inside the capsule are roundish,〔 or pear shaped (pyriform), seeds.〔〔 They have a creamy,〔 or yellowish white aril (appendage).〔〔 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 tigridia」の詳細全文を読む スポンサード リンク
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