A perennial plant of the Rosaceae family (APG classification: Rosaceae). It grows 40-80 cm tall and is almost hairless. The basal leaves are pinnately compound, with 9-13 leaflets, elliptical, rounded at the tip, and coarsely serrated at the edge. In July and August, it produces dense spikes at the ends of the branches. The inflorescences are drooping, cylindrical, 5-10 cm long, reddish purple, and bloom from the tips. It has no petals, 4 sepals, and 6-12 stamens, which are much longer than the sepals. The filaments are reddish purple and wide at the top. The fruit is an achene, enclosed in a calyx tube. It is found mainly in the subalpine to alpine areas on the Sea of Japan side of the Chubu region of Honshu, and a variant is also found in Korea. The name comes from the comparison of the plant's beautiful filaments to Chinese karaito. S. japonensis (Makino) Kudô has drooping purple inflorescences and similar leaves, but can be distinguished by having four stamens and flowers that begin to open from the base. [Naohiro Naruhashi December 13, 2019] From July to August, it produces cylindrical spikes of flowers that hang down from the ends of the branches. The length of the inflorescence is 5 to 10 cm. They are crimson purple and bloom from the tips. ©Shogakukan Photo by Masatoshi Hirose "> Karaitesou Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
バラ科(APG分類:バラ科)の多年草。高さ40~80センチメートル、ほとんど毛がない。根出葉は羽状複葉、小葉は9~13枚、楕円(だえん)形、先は円く、縁(へり)に粗い鋸歯(きょし)がある。7~8月、枝の先に密な穂状花序をつくる。花序は下垂し、円柱形で長さ5~10センチメートル、紅紫色、先端から開花する。花弁はなく、萼片(がくへん)は4枚、雄しべは6~12本で萼片よりはるかに長い。花糸は紅紫色で、上部は幅広くなる。果実は痩果(そうか)で、萼筒に包まれる。本州中部地方のおもに日本海側の亜高山から高山にみられ、変種が朝鮮にも分布する。名は、この植物の美しい花糸を中国産の唐糸(からいと)に見立てたもの。下垂する花序が紅紫色で葉も類似するエゾノトウウチソウS. japonensis (Makino) Kudôは、雄しべ4本、花は基部から開き始めるので区別できる。 [鳴橋直弘 2019年12月13日] 7~8月、枝の先に下垂する円柱形の穂状花序をつくる。花序の長さは5~10cm。紅紫色で、先端から開花する©Shogakukan 撮影/広瀬雅敏"> カライトソウ 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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