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
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
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
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ヒマラヤの周辺が原産です。よく分枝して、高さは1メートルほどになります。葉は楕円形で互生し、晩秋には紅葉します。7月から11月ごろ、青紫色の花を咲かせます。花冠は筒状で、先端が5裂します。
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イソマツ科ケラトスティグマ属の半常緑小低木で、学名は Ceratostigma griffithii。英名は Griffith's leadwort。
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The Griffith's leadwort (Ceratostigma griffithii) belongs to Plumbaginaceae (the Plumbago family). It is a semi-evergreen shrub that is native to around the Himalayas. This shrub is much-ranched and can reach about 1 m in height. The leaves are elliptic, arranged alternately and turn red in late fall. The blue-purple flowers bloom from July to November. The corolla is tubular with five partite tips.
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埼玉県滑川町「武蔵丘陵森林公園」にて、2010年12月05日撮影。
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