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''Iris afghanica'' is a species in the genus ''Iris'', it is also in the subgenus of Iris and in the ''Regelia section''. It is a rhizomatous perennial, from Afghanistan, with thin bluish-green leaves and creamy yellow or white flowers, that are veined with purple-brown. It has yellow-green or purple beards. Although, in the wild, it can vary in colour and size. It is cultivated as an ornamental plant in temperate regions. ==Description== It has a small brown rhizome.〔British Iris Society (1997) 〕〔(【引用サイトリンク】url=http://irisbotanique.over-blog.com/article-chapitre-i-partie-8-les-regelia-124148449.html )〕 Underneath, are long thin secondary roots.〔 It forms small tufts of plants,〔〔(【引用サイトリンク】url=http://encyclopaedia.alpinegardensociety.net/plants/Iris/afghanica )〕 which can be up to across.〔〔 It has slender, bluish-green leaves,〔〔〔(【引用サイトリンク】url=http://www.kew.org/science-conservation/plants-fungi/iris-afghanica )〕 which have a narrow white, membranous inner margin.〔 They can reach up to long,〔 and between 0.2-0.6 cm wide but the outer leaves are often sickle-shaped (falcate).〔〔〔〔James Cullen, Sabina G. Knees, H. Suzanne Cubey (Editors) 〕〔(【引用サイトリンク】url=http://www.plantlifeforms.com/503902440620354/Irises_Iris_-_Afghanistan_White_Bearded_Iris_afghanica__20354.aspx )〕 The leaves appear in February (in Europe) and after flowering they die away completely.〔 The plants can vary in size depending on the location and the altitude.〔〔 At higher altitudes, the plants are deeper in colour and smaller (around about 10 cm tall). At lower altitudes, the plants are larger (around tall) and more paler in colour.〔 The stems (or scapes) can grow up to between tall.〔〔〔〔〔 The stems hold 1,〔〔〔 sometimes 2 terminal (top of stem) flowers,〔〔 in late spring to early summer,〔〔 between April and June.〔〔 The flowers are in diameter,〔〔〔〔〔 come in shades of creamy yellow or white.〔〔〔〔〔〔〔 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 cream or white, drooping falls have a central purple signal patch,〔〔〔〔 surrounded by purple-brown veining.〔〔〔〔〔〔〔 In the centre of the petal is a beard of greenish yellow or purple hairs.〔〔〔〔〔〔〔 The pale yellow upright standards,〔〔〔 are long,〔 they have a beard of greenish hairs on the lower part.〔〔〔〔 As mentioned before, the plants can vary in colour due to altitude, the lower altitude plants can have pure white standards.〔 It has a short style arm (above the falls) that is yellow, and veined with pale green.〔 After the iris has flowered, it produces a seed capsule, which has not been described. 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 afghanica」の詳細全文を読む スポンサード リンク
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