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}} ''Iris longipetala'' is a species in the genus ''Iris'', it is also in the subgenus of Limniris and it is also in the series Longipetalae. It is a bulbous perennial, from north America. It has dark green or bluish green, grass-like leaves, small stem and 3-8 flowers, that range from creamy-white, pale blue to lavender blue. It is cultivated as an ornamental plant in temperate regions. ==Description== ''Iris longipetala'' has a rhizome (approx. 10–25 mm diam),〔 with small trailing branches (which are approx. 2–2.5 cm in diam.) and plenty of fleshy toots.〔 The spreading rhizomes give the appearance of a clump forming plant.〔 It can form dense colonies.〔 It has a small stem, which reaches a height of between ,〔 with a few branches (1 or 2)〔 and is about 3–6 cm in diameter.〔 The stem has 3 leaves along it, which overlap and wrap around the stem.〔 The leaves can be either dark green or bluish green and they can be equal or just shorter than the flowering stems.〔〔 They start at the base of the plant, rising up with a grass-like form. They are generally, between 5-11mm wide.〔〔〔(【引用サイトリンク】 url=http://encyclopaedia.alpinegardensociety.net/plants/Iris/longipetala )〕 They are briefly deciduous,〔 turning grey or yellow-brown when dying.〔 Before soon re-appearing, giving the plant an evergreen appearance.〔〔〔 It can have between 3-8 flowers per stem, in spring,〔〔〔〔〔 (March—April) 〔 or summer (in Europe).〔 The lilac-purple perianth tube is between 3–8 cm in length.〔〔 The very lightly scented flowers〔(【引用サイトリンク】 url=http://www.laspilitas.com/nature-of-california/plants/iris-longipetala )〕 come in a range of shades from creamy-white,〔〔〔〔〔 pale blue〔 to lavender blue.〔〔〔 Each flower has a purple (lilac to dark purple) veining.〔〔〔 The falls often have a slight yellowish signal patch.〔〔〔〔 They are large, measuring about across,〔 but with narrow petals.〔〔 It has 2-lobed stigmas.〔〔 After flowering, it has a (oblong-ovoid shaped) seed capsule (measuring approx. 2in long) that is narrowed at each end.〔 The capsule has 6 ribs along it length. It is almost round in cross-section.〔 Inside are wrinkled dark brown globular seeds,〔 which are pyriform.〔 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 longipetala」の詳細全文を読む スポンサード リンク
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