A perennial plant of the Cyperaceae family (APG classification: Cyperaceae). It grows 10-20 cm tall, with hard leaves about 5 mm wide. It is dioecious, and produces spikes of 4-6 cm at the end of the stem in April-June. The hard vesicles are about 1 cm long, and grow long at the tip. The rhizome grows long, and old scale leaves (rinpenyo) decompose at the nodes and remain in fibrous form. It is also called fudekusa (brush grass) because it resembles a brush. It commonly grows on sandy beaches on the west coast of Hokkaido, Honshu, Shikoku, and Kyushu, and often grows in clusters. It is a representative species of coastal plant and is sometimes used for erosion control. Outside of Japan, it is distributed in the Korean Peninsula and China. C. macrocephala Willd. is distributed from northeastern Hokkaido to the coast of the Sea of Okhotsk and on the west coast of North America. It resembles Kobomugi, but can be distinguished by its significantly curved fruit follicles. [Eiichiro Kinoshita July 19, 2019] ©Masayoshi Umebayashi "> Major species of sedge (2) [specimen illustrations] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
カヤツリグサ科(APG分類:カヤツリグサ科)の多年草。高さは10~20センチメートル、葉は堅く幅は5ミリメートル程度。雌雄異株で、4~6月に茎の先に4~6センチメートルの穂状花序をつける。果胞は堅く長さ1センチメートルくらいで、先端が長く伸びる。根茎は長く伸び、節には古い鱗片葉(りんぺんよう)が分解して繊維状に残っている。そのようすを筆に見立てて、フデクサ(筆草)の名もある。北海道西海岸、本州、四国、九州の砂浜に普通に生え、群生することが多い。海浜植物の代表的な種で砂防に用いられることもある。日本以外では、朝鮮半島、中国に分布する。北海道北東部からオホーツク海沿岸および北アメリカ西海岸にはエゾノコウボウムギC. macrocephala Willd.が分布する。コウボウムギに似ているが、果胞が著しく反り返ることで区別できる。 [木下栄一郎 2019年7月19日] ©梅林正芳"> スゲのおもな種類(2)〔標本画〕 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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