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はうちわのき (羽団扇の木)
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わが国の南西諸島と小笠原諸島、それに台湾やオーストラリア、ニュージーランド、世界の熱帯・亜熱帯地域に広く分布しています。海岸沿いに生え、高さは３〜５メートルになります。葉は線状長楕円形で互生します。初夏に円錐花序をだし、目立たない黄緑色の花を咲かせます。果実は翼果で、扁平な３〜４個の翼があります。和名はこの翼果を、天狗の羽団扇に見立てたもの。写真は園芸品種の「プルプレア（cv. Purpurea）」、葉の色が銅緑色で秋には濃赤紫色に変わります。台湾華語では「車桑子」。 |
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ムクロジ科ハウチワノキ属の常緑低木で、学名は Dodonaea viscosa var. angustifolia。英名は Hopseed bush、Hop bush。 |
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The Hopseed bush (Dodonaea viscosa var. angustifolia) belongs to Sapindaceae (the Soapberry family). It is a small evergreen tree that is widely distributed in the Nansei and Ogasawara Islands of Japan, as well as Taiwan, Australia, New Zealand, and tropical and subtropical regions of the world. It grows along the coast and is 3 to 5 m tall. The leaves are linear-oblong, and alternate. In early summer, it produces panicles of inconspicuous yellow-green flowers. The fruit is a winged fruit with three to four flat wings. The Japanese name is derived from the winged fruit, which resembles a tengu's feather fan. The photo shows the horticultural variety 'Purpurea', which has copper-green leaves that turn dark reddish purple in autumn. In Taiwanese Chinese, it is called "車桑子". |
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大阪市鶴見区「咲くやこの花館」にて、2006年11月29日撮影。 |
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Shu Suehiro
shu@botanic.jp
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