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わが国の本州北部から北海道南西部に分布しています。海岸から高山帯の草地まで生え、高さは70〜200センチになります。葉は披針形から楕円形、卵形で、粗い鋸歯があるか、羽状に中裂します。7月から10月ごろ、枝先に淡い紅紫色の頭花を上向きに咲かせます。「たちあざみ」に比べて頭花は少し小さいです。総苞は鐘形で、総苞片は8〜9列あり、外片が短く、針状で斜開します。別名で「おおいわあざみ(大岩薊)」とも呼ばれます。
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キク科アザミ属の多年草で、学名は Cirsium alpicola。英名はありません。
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The "Mine-azami" (Cirsium alpicola) belongs to Asteraceae (the Aster family). It is a perennial herb that is distributed from northern Honshu to southwestern Hokkaido. It grows from the coast to alpine meadows and can reach 70-200 cm in height. The leaves are lanceolate to elliptic, ovate, with coarse serrations or pinnate splits. The pale magenta-colored head flowers come up on the tips of the branches from July to October. The head flower is a little smaller than "Tachi-azami" (Cirsium inundatum). The involucre is bell-shaped, and the involucal bracts have 8-9 rows, and the outer involucal bracts are short and needle-shaped and open obliquely. It is also called "Oo-iwa-azami".
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[上・中1〜7] 青森市荒川「八甲田山」にて、2019年08月29日撮影。 [中8〜11・下] 青森県弘前市「岩木山」にて、2020年07月25日撮影。
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