Achnatherum

…A perennial grass of the grass family that grows in the grasslands of mountain forests. It produces small, erect, stiff stems, 80-150cm tall, with several nodes. The leaves are broad and linear, 30-60cm long, 7-15mm wide, and somewhat hard. When dry, they curl inward, gradually becoming longer and more pointed before drooping downward. The inflorescence appears at the tip of the stem in August-September, forming a large, sparse panicle, ovate overall, 20-50cm long, with 3-4 slender branches in a semi-whorl at each node of the central axis, and spikelets sparsely borne on the branchlets that branch out. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…山林の中の草地に生えるイネ科の多年草。茎は小さい株をつくり，直立して硬く，高さ80～150cm，数個の節がある。葉はやや幅広い線形で，長さ30～60cm，幅は7～15mm，質はやや硬く，乾くと内へ巻き，先はしだいに長くとがり下へ垂れる。花房は8～9月に茎の先端に現れ，大きくまばらな円錐花序で，全体は卵形で長さ20～50cm，中軸の各節に3～4個の細長い枝を半輪生し，さらに分かれた小枝の上にまばらに小穂をつける。…

※「Achnatherum」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