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}} ''Iris rossii'' is a beardless iris in the genus ''Iris'', in the subgenus ''Limniris'' and in the ''Chinenses series'' of the species. It is a rhizomatous herbaceous perennial from Japan, Korea and China. It has narrow, grass-like leaves, short stems and 1 or 2 purple-violet flowers. ==Description== ''Iris rossii'' is similar in form to ''Iris ruthenica''. It has slender, tough, reddish-brown, creeping rhizomes.〔〔〔〔British Iris Society (1997) 〕 Under the rhizome, are long secondary roots growing into the soil, looking for nutrients and water.〔〔 They have the yellow-brown remnants (sheaths or fibres) of the previous seasons leaves, at the base of new leaves.〔〔〔〔 It has narrow, linear leaves, acuminate (ending in a point, grass-like), that are between long and wide.〔〔〔 They have between 2-4 veins.〔 They then elongate after flowering, up to long.〔〔 It has dwarf, short stems,〔〔 (or scapes) between long.〔〔〔〔〔〔〔〔〔 The stem has 2 or 3 lanceolate (lance-like) between long and wide, spathes (leaves of the flower bud).〔〔 It has one or two terminal (at the top of the stem) flower,〔〔 in spring to early summer,〔 between April,〔〔 and May.〔〔 The small flowers are in diameter,〔〔〔 and come in a range of shades of purple and violet, but there are occasionally white forms as well.〔〔〔〔〔〔〔〔〔 The white form is only found in Korea.〔 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, 3 cm long and 0.8-1.2 cm wide, it is marked with white spots, veins or white signal area. It has a white/yellow centre section.〔〔〔〔 The standards are erect or slightly angled, measuring 2.5 cm long and 0.8 cm wide.〔〔 It has a long perinath tube of 5–7 cm,〔〔 a 1 cm long pedicel, slender 1.5 cm long stamens, 1 cm long ovary and 2 cm long style branches (which are a similar colour to the petals).〔 After the iris has flowered, it produces a globose (spherical) seed capsule between June and August.〔〔 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 rossii」の詳細全文を読む スポンサード リンク
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