Scirpus maritimus (English spelling) Scirpus maritimus

...A perennial plant of the Cyperaceae family that grows in colonies in the wetlands of riverbanks and marshes. It has a long rhizome that spreads horizontally in the muddy soil at the bottom of the water, and produces a water chestnut-shaped tuber at the end, wrapped in a dark skin. The stem rises from the tuber, grows to a height of about 1m, has several nodes, and bears long, linear leaves arranged in three rows. At the end of summer, 3 to 4 leaf-like bracts appear at the top of the stem, and several spikelets with short stalks grow between them. The spikelets are elliptical, brown, and about 2 cm long. The scales are covered with fine hairs on the outside, and the fruit is diamond-shaped, triangular, and has 3 to 6 stinging needles at the base. ...

*Some of the terminology that mentions "Scirpus maritimus" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…河原や沼沢地の湿地に群生するカヤツリグサ科の多年草。水底の泥土中に長く横にはった根茎があり，先端に黒っぽい皮に包まれたクワイ形の塊茎を作る。茎は塊茎から立ち上がり，高さ1mくらいで，数個の節があって，3列に並んだ線形の長い葉をつける。夏の終りに茎の頂に3～4枚の葉状苞を出し，その間に短い柄のある小穂数個をつける。小穂は楕円形で，褐色，長さは2cmくらいある。鱗片の外側に細い毛が生え，果実はひし形で三稜があり，基部に3～6本の刺針をもつ。…

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