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インドネシアやマレーシアが原産です。高さは9〜12メートルほどになります。葉は偶数羽状複葉で、小葉は楕円形をしています。温度さえあれば周年、ピンク色に紅色の筋が入った花を咲かせます。別名で、「こちょうセンナ(胡蝶センナ)」とも呼ばれます。
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ジャケツイバラ科カワラケツメイ属の常緑高木で、学名は Cassia javanica。英名は Pink shower tree、Apple blossom。
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The Pink shower tree (Cassia javanica) belongs to the family Caesalpiniaceae. It is a tall evergreen tree that is native to Indonesia and Malaysia. It grows to a height of 9 to 12 m. It has pari-pinnate compound leaves with elliptic leaflets. It produces pink flowers with streaks of red throughout the year as long as the temperature is suitable. It is also known as "Kocho-senna" (butterfly senna) in Japan.
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関緑著「太陽の花たち」より。(photo by Midori Seki)
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