A perennial herb of the Ranunculaceae family (illustration) that grows under deciduous broadleaf forests in moist mountainous areas. It is also called dwarf cranesbill. It spreads by spreading slender rhizomes that spread horizontally and send out creeping branches. The stem is 10-20 cm tall, and usually has one long-stalked basal leaf at the base, and a pair of opposite stem leaves at the top. There is a well-developed leaf sheath at the base of the petiole. The leaves are bird's-foot compound, usually with five leaflets and serrated edges. There is usually one flower at the end of the stem, but sometimes a branch emerges from the axil of the stem leaf, and bears a pair of stem leaves and a terminal flower. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
山地の湿り気のある落葉広葉樹林の下に生えるキンポウゲ科の多年草(イラスト)。ツルシロカネソウともいう。根茎は細長く横にはい,匍匐(ほふく)枝を出して繁殖する。茎は高さ10~20cm,基部にはふつう1枚の長い柄のある根生葉があり,上部には1対の茎葉を対生する。葉柄の基部には発達した葉鞘(ようしよう)がある。葉は鳥足状複葉で,小葉はふつう5枚,鋸歯がある。花はふつう茎の先に1個,ときに茎葉の腋(わき)より分枝を出し,それに1対の茎葉と1個の頂生する花をつける。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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