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アメリカの東部から中南部に分布しています。湿った場所や野原などに生え、高さは20〜45センチになります。よく分枝して、全体が粘質の腺毛に被われます。葉は卵形から披針形で互生します。4月から7月ごろ、茎頂に密な花序をだし、紅色やピンク色、白色などの花を咲かせます。園芸品種も数多く作出され、夏の花壇を彩ります。別名で「ききょうなでしこ(桔梗撫子)」とも呼ばれます。
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ハナシノブ科フロックス属の多年草で、学名は Phlox drummondii。英名は Annual phlox。
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The annual phlox (Phlox drummondii) belongs to Polemoniaceae (the Phlox family). It is an annual herb that is native to the eastern to central-southern United States. This herb grows in waste places and fields, and it can reach 20-45 cm in height. It is much branched and covered with sticky glandular hairs. The leaves are ovate to lanceolate and alternate. The tight clusters are borne at the stem ends and bloom rose-red, pink or white flowers from April to July. Many cultivars have been breeded and color summer gardens.
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[上・中1〜2] 長野県大町市常盤「ラ・カスタ」にて、2007年07月10日撮影。 [中3〜5・下] 千葉県香取市大角にて、2016年06月06日撮影。
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