Abura-gaya - Abura-gaya

Japanese: アブラガヤ - あぶらがや

A large perennial plant of the Cyperaceae family found in marshes and riverside wetlands (illustration). The stems rise from short, thick rhizomes, form sparse clumps, and grow to a height of over 1m with several nodes. The nodes are brown and the internodes are yellowish and shiny, giving the plant the appearance of oil, hence the name "oil grass." The leaves are found at the base and nodes of the stem, long and linear, and about 1cm wide. From late summer to autumn, a large umbel appears at the top of the stem, which branches several times and produces a very large number of densely growing brown elliptical spikelets.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

沼沢地や河原の湿地に見る大型のカヤツリグサ科の多年草（イラスト）。茎は短く太い根茎から立ち上がり，まばらな株を作り，高さ1m以上となって，数個の節がある。節は茶色で，節間が黄色っぽく光沢があり，油があるかに見えるので油茅という。葉は茎の根もとと節につき，長く伸びた線形で，幅は1cmくらいである。夏の終りから秋に向かって，茎の上部に大型の散形花序を出し，数回枝分れしながら，茶色で楕円形の小穂をきわめて多数密生する。

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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