Chikusichloa

...It is a perennial grass of the Poaceae family that grows in wetlands, and is one of the rare species known only in a few places in Japan and China. It is a rather large herbaceous plant, with stems rising from short rhizomes and reaching a height of 1-1.2m. The leaves are long and linear, 40-70cm long and about 10mm wide, rough overall, gradually becoming longer and sharper at the tips, and thin but hard. From August to October, it produces a large, somewhat sparse panicle at the top of the stem, about 50cm long and 20cm wide. The branches are thin and open obliquely when they bloom, but later stand up along the central axis and produce a few spikelets. ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…水湿地に生えるイネ科の多年草で，日本と中国の数ヵ所のみに知られた稀品の一つである。やや大型の草本で，茎は短い根茎から立ち上がり，高さは1～1.2m。葉は長い線形で，長さ40～70cm，幅は10mm内外あり，全体にざらつき，先はしだいに長くとがり，質は薄いが硬い。8～10月ころ，茎の頂に長さ50cm，幅20cmくらいのややまばらで大型の円錐花序を出す。枝は細く，開花時には斜開するが，後に中軸に沿って立ち，少数個の小穂をつける。…

※「Chikusichloa」について言及している用語解説の一部を掲載しています。

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