Yadake (arrow bamboo) - Yadake (English spelling) Pseudosasa japonica (Sieb.et Zucc.) Makino

Japanese: ヤダケ(矢竹∥箭竹) - ヤダケ（英語表記）Pseudosasa japonica (Sieb.et Zucc.) Makino

A large bamboo of the Poaceae family. It is also known as Shinodake (Shinotake). The culms are straight, with one branch emerging from each node, mainly from the top. The long, slender leaves hang down beautifully. As the name suggests, it has long been used for bows and arrows. It grows wild widely from the Kanto region southwards, and the larger ones can reach a diameter of 2cm and a height of 5m, with low nodes and long internodes on the stem. It has about 10 spikelets and 3 stamens. The culms are used for bows and arrows as well as fishing rods, and are also cultivated for decorative purposes. It is cultivated throughout the country, and can also be found in parts of China and Taiwan. Rakkyoyadake (薤矢鳥) cv. Tsutsumiana has alternating internodes on the culms and rhizomes, resembling a row of scallions.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

イネ科の大型のササ。シノダケ(篠竹)の名もある。稈（かん）はまっすぐで，主として上方から1節に1本の枝が出る。細長い葉が垂れ下がり，美しい。名のように昔から弓の矢に用いられる。関東以南に広く自生し，大きいものは直径2cm，高さ5m，茎の節は低く，節間は長い。小穂は10個ぐらい，おしべは3本。稈は弓の矢のほか釣り竿にも用いられ，観賞用に栽植もされる。全国各地で栽培され，中国，台湾の一部にもある。ラッキョウヤダケ(薤矢竹)cv.Tsutsumianaは稈も地下茎も節間が交互にふくれて，ラッキョウをつらねたようである。

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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