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''Olsynium douglasii'' (syn. ''Sisyrinchium douglasii'', ''Sisyrinchium grandiflorum'') is a flowering plant, commonly known as Douglas' olsynium, Douglas' grasswidow, grasswidow, blue-eyed grass, purple-eyed-grass, or satin flower, 〔()〕 in the genus ''Olsynium'', native to western North America from southern British Columbia south to northern California, and east to northwest Utah. It is the only species in the genus ''Olsynium'' in North America, the remaining 11 species being from South America. It was formerly treated in the related genus ''Sisyrinchium''. It is a perennial herbaceous bulbiferous plant growing to 10-40 cm tall. The leaves are slender linear, 10-30 cm long and 1.5-3 mm broad. The flowers are bell-shaped, 15-25 mm long, with six purple tepals. There are two varieties: *''Olsynium douglasii'' var. ''douglasii''. Coastal western North America. Flower filaments with a narrow base. *''Olsynium douglasii'' var. ''inflatum''. Interior western North America. Flower filaments with an inflated base. ==References== *(Flora of North America ) — (map ) *(Plants of British Columbia ) *(Jepson Flora Project: ''Sisyrinchium douglasii'' ) *(Encyclopedia of Life: Olsynium douglasii var. douglasii ) 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「Olsynium douglasii」の詳細全文を読む スポンサード リンク
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