A perennial herb of the Berberidaceae family (APG classification: Berberidaceae). Plant height 30-60 cm. Leaves are simple and shield-shaped, with two on each stem. The petioles of the lower leaves are long, but those of the upper leaves are extremely short. In May and June, 3-10 flowers are borne in a cyme just above the upper leaves. The flowers are white, with six petals and sepals, six stamens, petal-like anthers, one pistil, and a single-chambered ovary. The fruit is a berry of black indigo color, containing several seeds. It grows on the moist forest floor of deciduous forests, and is distributed mainly on the Sea of Japan side of Honshu north of Hiroshima Prefecture, Hokkaido, and Karafuto (Sakhalin). Another species of the same genus is distributed in China, and another species is distributed in eastern North America. [Susumu Terabayashi September 17, 2019] The stem has two leaves, and in May and June, white six-petaled flowers grow in a cyme just above the upper leaf. ©Shogakukan Photo by Fujio Aoyama "> Sunflower Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
メギ科(APG分類:メギ科)の多年草。草丈30~60センチメートル。葉は単葉で盾状、茎に2枚つく。下の葉の葉柄は長いが、上の葉の葉柄は極端に短い。5~6月、上の葉のすぐ上に、3~10個の花を集散花序につける。花は白色で、花弁、萼片(がくへん)とも6枚、雄しべは6本で葯(やく)は弁状に開き、雌しべは1本で子房は1室。果実は液果で黒い藍(あい)色を呈し、中に数個の種子がある。落葉樹林の水分の多い林床に生え、広島県以北の本州のおもに日本海側、北海道、および樺太(からふと)(サハリン)に分布する。中国には同属の別の1種が、北アメリカ東部にはさらに別の1種が分布する。 [寺林 進 2019年9月17日] 茎に2枚の葉がつき、5~6月、上の葉のすぐ上に白色の6弁花を集散花序につける©Shogakukan 撮影/青山富士夫"> サンカヨウ 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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