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''Iris forresti'' is a species in the genus ''Iris'', also the subgenus of ''Limniris'' and in the ''Iris series Sibiricae''. It is a rhizomatous herbaceous perennial, from China (including Tibet) and Burma. It has linear grassy-like leaves, long thin stem and fragrant yellow or lemon-yellow flowers. They are cultivated as ornamental plants in temperate regions. ==Description== ''Iris forrestii'' is similar in form to the smaller ''Iris wilsonii''. It has short thick, rhizomes that form dense clumps of plants.〔〔 The base of the plant is covered by fibres from the remains of last seasons leaves.〔 It has linear, grassy-like leaves that are grey-green with one dull side and the other side a glossy green or yellow-green.〔〔〔〔〔〔〔 The leaves grow to between 11–50 cm (5-20 inches) long and 2–7 mm (1 inch) wide.〔〔〔 The leaves are shorter than the flower stems.〔〔〔〔 It has a slender, hollow, flowering stem that grows up to between 15–45 cm (6-18 inches) long and 2–3 mm wide.〔〔〔〔〔〔〔〔〔〔〔〔〔British Iris Society (1997) 〕 In the wild, the plants are much smaller starting from 15 cm (6 inches).〔 The stem has between 1 and 2 smaller leaves (or bracts).〔〔 The unbranched stems have between 1 and 2 flowers at the terminal ends, in early summer, between May and June.〔〔〔〔〔〔〔〔 It has 3 green lanceolate (sword-shaped) spathes (leaves of the flower bud), which have a slight reddish-purple edge and measuring 5.5–7 cm (2-3 inches) long and 1-1.2 cm wide.〔〔 The yellow or lemon-yellow flowers are slightly fragrant,〔〔〔〔〔〔 and are about 5–6 cm (2-2.5inches) in diameter.〔〔〔〔 It has 2 pairs of petals, 3 large sepals (outer petals) known as the falls and 3 - 4 inner, smaller petals (or tepals), known as the standards. The drooping (obovate shaped) falls have a wide blade (about 1 inch wide and 4 inches long), which have purple-brown or red-brown stripes, lines or spots over a deeper yellow centre or signal patch.〔〔〔〔〔〔〔〔〔〔〔〔〔 The upright and oblanceolate standards are narrower than the falls,〔〔〔〔〔〔 with slightly curled edges.〔〔 It has a perianth tube of 1.3 cm long, 3 cm long stamens, brown-yellow anthers and large pale yellow, arching style branches (almost as big as the standards) 4-4.5 cm long and 1.4-1.6 cm wide.〔〔 In July and August (after blooming) has a pale green ovary (seed case),〔 containing the (ellipsoid shaped) seed capsule, measuring 4-4.5 cm long and 1.5-1.8 cm wide.〔〔 The capsule has 6 ribs and a beaked point. Inside the capsule are semi-orbicular seeds.〔 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 forrestii」の詳細全文を読む スポンサード リンク
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