A perennial plant of the Vitaceae family. A vine commonly found in the mountains and fields, it is widely distributed in the temperate and subtropical zones of East Asia. The stems are thick and woody at the base, and grow to several meters. The leaves are alternate, heart-shaped and ovate with 3 to 5 lobes, 5 to 10 cm in diameter, light green on the underside, and hairy on the veins. Tendrils grow opposite the leaves, which divide into two. In July and August, they form cymes opposite the leaves, and produce many small green flowers. The fruits are spherical berries 6 to 8 mm in diameter, and are a mixture of white, purple, and blue. The fruits often become galled due to infestation by the larvae of the grape gall midge and grape borer. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ブドウ科の多年草。山野に普通にみられるつる草で,東アジアの温帯,暖帯に広く分布する。茎は基部が太く木質で,数mに伸びる。葉は互生し,3~5裂する心臓状卵形で,径5~10cmあり,裏面は淡緑色,脈上に毛がある。葉と対生する位置に巻きひげを生じ,ふたまたに分裂する。7~8月,葉と対生して集散花序をつくり,多数の緑色の小花をつける。果実は径6~8mmの球形の液果で,白,紫,青色などが混っている。しばしば果実はブドウタマバエやブドウトガリバガなどの幼虫の寄生により,虫こぶになる。
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