A perennial plant of the Ranunculaceae family, widely distributed in the cool temperate zone of eastern Asia. It grows under trees and in grasslands in mountainous areas throughout Japan. It can reach a height of up to 1m. The leaves are large, compound, with 2-3 trifoliates, and alternate on long stalks. The base of the petiole becomes membranous and widens, embracing the stem. In July and August, a 20cm-long inflorescence appears at the top of the stem, densely bearing numerous small white flowers. Each flower has a short stalk, white linear petals that fall off quickly, but the numerous stamens remain in the form of white threads, resembling a bottle brush. The fruit is a capsule. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
キンポウゲ科の多年草で,アジア東部の冷温帯に広く分布する。日本全土の山地の樹下や草原に生える。高さ 1mにも達する。葉は3出を2,3回繰返す大型の複葉で,長い柄をもって互生する。葉柄のつけ根は膜質になって幅が広がり,茎を抱いている。7~8月,茎頂に長さ 20cmもの花穂を出し,多数の白色小花を密につける。個々の花には短柄があり,花弁は白い線形で早く散るが,多数あるおしべが白い糸状に残って瓶洗いのブラシのようにみえる。果実は袋果である。
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