A perennial plant of the Paeoniaceae family. It is said to be native to the grasslands of Siberia, northern China, and the northern part of the Korean Peninsula, and has been introduced to Japan since ancient times and cultivated in various places for ornamental purposes. It has an underground rhizome, and every year a new green stem grows from the thick roots, reaching a height of 1m. The leaves are alternate, and the lower part is bifoliate compound, while the upper part is trifoliate compound or simple, green, hairless and glossy on both sides. In early summer, it produces large beautiful flowers at the ends of the branches. It has 5 sepals, about 10 petals, many stamens, and about 3 to 5 pistils. There are many horticultural varieties, and the most common are double-flowered ones with petalized stamens. The flower color is red, white, and other diverse depending on the variety. The dried roots are used as a painkiller. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ボタン科の多年草。シベリアから中国北部,朝鮮半島北部などの草原が原産といわれ,古くから日本に渡来して観賞用に各地で栽培されている。地下に根茎があり肥厚した根から毎年新しく緑色の茎を伸ばして,高さ 1mにする。葉は互生し,下部のものは2回3出複葉,上部のものは3出複葉または単葉で,緑色,表裏とも毛はなくて光沢がある。初夏に,枝先に大型の美花をつける。萼片5枚,花弁は 10枚内外,おしべ多数,めしべは3~5本ほどある。園芸品種は非常に多く,おしべが弁化した八重咲きのものが普通である。花色は紅,白その他品種により多種多様である。根を干したものは鎮痛剤として用いられる。
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