A deciduous tree of the family Ardisiaceae (APG classification: Ardisiaceae). Entire plant is hairless. It grows to a height of 5-10 meters. The twigs are fragile and break easily, hence the name. The leaves are triangular-ovate or ovate, 5-6 cm long, 3-4 cm wide, entire, and have a pointed tail at the tip. In March and April, racemes are produced in the leaf axils, and several fragrant yellowish-white flowers bloom. The corolla is tubular, 5-7 mm long. The ovary is three-lobed and semi-inferior. The drupe is elliptical-globular, about 8 mm long, and ripens to a red color. It grows in evergreen forests, and is distributed in southern Kyushu, Okinawa, China, Taiwan, and Southeast Asia. [Kyoshio Furusawa February 17, 2021] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
ボロボロノキ科(APG分類:ボロボロノキ科)の落葉小高木。全株無毛。高さ5~10メートル。小枝はもろく、折れやすいので名がついた。葉は三角状卵形または卵形で長さ5~6センチメートル、幅3~4センチメートル、全縁で先端は尾状にとがる。3~4月、葉腋(ようえき)に総状花序をつくり、芳香のある黄白色を帯びた花を数個開く。花冠は筒状で長さ5~7ミリメートル。子房は3室で半下位。核果は楕円(だえん)状球形で長さ約8ミリメートル、赤色に熟す。常緑樹林内に生え、九州南部、沖縄、および中国、台湾、東南アジアに分布する。 [古澤潔夫 2021年2月17日] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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