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わが国の本州、奈良県以東から福島県に分布しています。山地の落葉樹林内に生え、高さは50〜100センチになります。葉は2〜4回3出複葉で、小葉は卵形でときに3裂し、粗い鋸歯があります。7月から8月ごろ、茎頂に総状花序をだし、淡い紅紫色の花を咲かせます。花弁状に見えるのは萼片です。
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キンポウゲ科レンゲショウマ属の多年草で、学名は Anemonopsis macrophylla。英名はありません。
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The "Renge-shoma" (Anemonopsis macrophylla) belongs to Ranunculaceae (the Buttercup family). It is a perennial herb that is native to eastward from Nara prefecture to Fukushima prefecture of Honshu, Japan. This herb grows in montane deciduous forests and can reach 50-100 cm in height. The leaves are twice to fourth 3-lobed compound, the leaflets are ovate and divided into 3 segments with coarse teeth. The pale magenta flowers come in the apical racemes from July to August. The sepals look like petals.
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[上・中1] 東京都青梅市「御岳山」にて、2007年08月24日撮影。(photo by Takao Ito) [中2・中3] 長野県阿智村智里「ヘブンスそのはら」にて、2007年05月08日撮影。 [中4・中5] 福島県須賀川市勢至堂にて、2016年09月11日撮影。 [中6〜11・下] 長野県軽井沢町「軽井沢町植物園」にて、2018年08月09日撮影。
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