A medium-sized tree of the Boraginaceae family that is widely distributed in the tropics of Asia. In Japan, it is found to grow south of the Amami Islands. The bark is fibrous, and young branches are covered with deciduous hairs. The leaves are alternate and ovate or elliptical. They are 7-12 cm long and 4-7 cm wide. The edges are entire and slightly wavy. The inflorescence is axillary and develops with the new leaves as a bifurcated cyme, and the scientific name dichotoma (meaning bifurcated) is derived from this characteristic. The corolla is pale yellow, about 7 mm in diameter, has 5 lobes, and opens flat. The fruit is a globose berry about 1 cm in diameter that turns red when ripe and later turns black. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
アジアの熱帯に広く分布するムラサキ科の中高木。日本では奄美諸島以南に自生地がある。樹皮は繊維質で,若い枝は脱落性の毛におおわれる。葉は互生し,卵形ないし楕円形。長さ7~12cm,幅4~7cm。縁は全縁でやや波打つ。花序は腋生(えきせい),新葉とともに展開し,二叉(にさ)に分岐した集散花序で,学名のdichotoma(二叉分岐の意)はこの特徴に由来する。花冠は直径約7mmで淡黄色,5裂し平開する。果実は漿果(しようか)で球形,直径約1cm,熟すと赤くなり,後に黒変する。
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