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熱帯アメリカや西インド諸島が原産の「おおごちょう」の園芸品種です。高さは1.8〜4.5メートルほどになり、葉は2回羽状複葉です。枝には鋭いとげがあります。温度さえあれば周年、枝先の長い円錐花序に鮮やかな黄色い花を咲かせます。黄色い雄しべが突きだしていて目立ちます。
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ジャケツイバラ科ホウオウボク属の常緑低木で、学名は Poinciana pulcherrima cv. Flava。英名は Yellow dwarf poinciana。
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The Yellow dwarf poinciana (Poinciana pulcherrima cv. Flava) belongs to the family Caesalpiniaceae. It is a small evergreen herb that is a gardening variety of "Dwarf poinciana" native to tropical America and the West Indies. This tree grows up to a height of 1.8-4.5 m. The leaves are bi-pinnate compound. The branches have sharp thorns. The brilliant yellow flowers will bloom in a long conical inflorescence, year around if the temperature keeps comfortable. The yellow stamens are well exserted and visible.
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[上・中1] 京都府精華町「花空間けいはんな」にて、2006年10月30日撮影。 [中2] 大阪市鶴見区「咲くやこの花館」にて、2017年09月15日撮影。 [中3〜5・下] 茨城県水戸市「水戸市植物公園」にて、2024年11月30日撮影。
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