An evergreen tall tree of the elm family. It is widely distributed in the tropics and subtropics from Southeast Asia to Australia and the Pacific Islands. It often grows in secondary forests after logging. In Japan, it grows in the Ryukyu Islands, the Ogasawara Islands, and parts of southern Kyushu. The trunk is gray-brown and reaches a height of 10 to 15 m. The leaves are alternate and have short stalks. The leaf blade is long and ovate, 7 to 15 cm long, pointed at the tip and slightly heart-shaped at the base, with sawtooth edges, and is thick. The leaf surface, especially the underside, is densely covered with white fluff, making it appear white. From spring to summer, it produces clusters of small flowers in the leaf axils and spherical, black-ripened fruits 4 to 5 mm in diameter. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ニレ科の常緑高木。東南アジア,オーストラリア,太平洋諸島にかけての熱帯,亜熱帯に広く分布する。伐採後の二次林に育つことが多い。日本では琉球列島,小笠原諸島および南九州の一部に生える。幹は灰褐色で高さ 10~15mになる。葉は互生し,柄は短い。葉身は長さ7~15cmの長卵形で先端はとがり基部はやや心形,縁に鋸歯があり,質は厚い。葉面,特に裏面に白い綿毛が密生し,白く見える。春から夏を通じて,葉腋に小花を集めてつけ,径4~5mmの球形で黒熟する果実を結ぶ。
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