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わが国の本州、近畿地方以北から北海道、千島列島それにサハリンに分布しています。山地の草原に生え、高さは20〜90センチになります。葉は披針形で全縁、対生します。9月から11月ごろ、茎先や葉腋に、長さ3〜5センチの青紫色の花を咲かせます。花冠は筒形で先端が浅く5裂し、日が当たっても全開しません。果実は刮ハです。
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リンドウ科リンドウ属の多年草で、学名は Gentiana triflora var. japonica。英名はありません。
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"Ezo-rindou" (Gentiana triflora var. japonica) belongs to Gentianaceae (the Gentian family). It is a perennial herb that is native from Kinki district of Honshu north to Hokkaido, the Kril Islands and Sakhalin. This herb grows in montane grasslands and it can reach 20-90 cm in height. The leaves are lanceolate, entire and arrnaged in opposite. The blue-purple, 3-5 cm long, flowers bloom atop of stems and axils from September to November. The corolla is tubular, quintuple-lobate shallowly at the tips and does not fully open when getting the sun.
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[上・中1〜2] 福島県昭和村「駒止湿原」にて、2012年08月26日撮影。 [中3〜中6] 福島県檜枝岐村「尾瀬沼」にて、2013年08月25日撮影。 [中14〜中16] 同上にて、2014年09月20日撮影。 [中7・中8] 栃木県那須町「姥ヶ平」にて、2014年08月14日撮影。 [中9〜中13] 福島県北塩原村「デコ平湿原」にて、2014年09月07日撮影。 [中17〜中19] 福島県須賀川市「笠ヶ森山」にて、2014年10月25日撮影。 [中20〜中24] 福島市土湯温泉町「一切経山」にて、2015年08月22日撮影。 [中25〜中28] 宮城県蔵王町「蔵王連峰」にて、2015年09月05日撮影。 [中29・中30] 同上にて、2015年09月05日撮影。(photo by Aya Seko) [中31・下] 岐阜県白川村「三方岩岳」にて、2016年08月20日撮影。
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