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''Iris dolichosiphon'' 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 China and Bhutan. It has long, thin dark green leaves, very short stem, and dark blue, purple, or violet flowers. That are mottled with white. It has thick white/orange beards. It has one subspecies, ''Iris dolichosiphon subsp. orientalis'', from China, India and Burma. It has similar flowers. They are cultivated as ornamental plants in temperate regions ==Description== It has very short rhizomes,〔(【引用サイトリンク】url=http://www.efloras.org/florataxon.aspx?flora_id=3&taxon_id=240001314 )〕 about 1 cm in diameter.〔British Iris Society (1997) 〕 They form dense clumps of plants, along the ground.〔〔 Beneath the rhizome, are secondary roots that grow deep into the ground.〔 It has basal leaves can grow up to between long and between 0.2 and 1.4 cm wide.〔〔〔 The leaves are around long at flowering time.〔 They then extend after the blooming period is over, up to when the plant fruits.〔 They grow 10 days before the plant flowers.〔 They are dark green with waxy surfaces,〔〔 linear, and gradually tapered to an acute apex (or point).〔〔 It has a very short stem,〔〔 almost at ground level.〔 The stem has 3 or 4, membranous, spathes or bracts (leaves of the flower bud).〔 They dry after flowering.〔〔 The stems hold 1 terminal (top of stem) flowers,〔〔〔 blooming between April and June.〔〔 The flowers can last for up to two days.〔 The flowers are in diameter,〔〔〔 come in shades of blue, from dark blue,〔Basak Gardner & Chris Gardner 〕 purple,〔 to violet.〔〔(【引用サイトリンク】url=http://www.cabdirect.org/abstracts/19900398665.html;jsessionid=8C5F66B9F020F3D27674EAF74E23E481 )〕 They are mottled,〔〔〔 or blotched,〔 with white,〔 or greenish-white.〔 The flowers are similar in form to ''Iris narcissiflora'' flowers, (another ''Pseudoregelia iris'').〔 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 oblong,〔 or spatulate (spoon like),〔〔 long and 0.8 - 1.8 cm wide.〔〔〔 They have a dense beard of clavate (club-shaped) hairs, that are orange tipped,〔〔 at the junction of haft (bend on the petal) and blade (widest part of the petal).〔〔〔 The deflexed (bent downwards) and spreading (horizontally) standards are long and 0.5 - 1.5 cm wide. They have brown and curled over margins.〔〔〔 It has long perianth tube,〔〔〔 that widens up to 1 cm in diameter.〔〔 It is brownish violet,〔〔 glossy,〔 or glaucous,〔 and covered in leaf-like bracts,〔〔 It has long stamens and long and 0.6 -1.5 cm wide, style branches, that are elliptic (in shape) and dark violet with pale margins.〔〔〔 It has 1.2 cm wide filaments,〔 which are blue at top and cream below,〔 or very pale violet.〔 It has 0.8 – 1 cm long and 0.2 cm wide anthers, that are orange or pale violet.〔〔 It has white or off-white pollen.〔〔 After the iris has flowered, in September,〔 it produces a thin ellipsoid seed capsule, that are long, with an acute apex.〔〔〔 They dehisce (split open) below the apex of the capsule,〔 with 3 lateral slits.〔 The seeds are long, with a long large 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 dolichosiphon」の詳細全文を読む スポンサード リンク
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