Floating sea urchin - Floating sea urchin

Japanese: ウキヤガラ - うきやがら
Floating sea urchin - Floating sea urchin

A perennial plant of the Cyperaceae family (APG classification: Cyperaceae). It grows to a height of about 1 to 1.5 meters. The stem is triangular, globular at the base, and has long underground runners. A corymb-like inflorescence grows at the end of the stem. There are a dozen or so spikelets, each 1 to 2 centimeters long and brown. It grows in colonies in sunny marshes and shallow waters throughout Japan. The Japanese name comes from the fact that the withered stem resembles the shaft of a bow and arrow, which floats on the water. It is also found in Korea, China, and North America.

[Eiichiro Kinoshita July 19, 2019]

Floating Sea Urchin
It produces a corymb-like inflorescence at the end of the stem, with a dozen or so brown spikelets. It grows in colonies in sunny wetlands and shallow water. ©Shogakukan Photo by Masatoshi Hirose ">

Floating Sea Urchin


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

カヤツリグサ科(APG分類:カヤツリグサ科)の多年草。高さは約1メートルから1.5メートル。茎は三稜(さんりょう)形で、基部は球状に膨れ、地下に長い走出枝がある。茎の先に散房状の花序がつく。小穂は十数個つき、長さ1~2センチメートルで褐色である。日本各地の日当りのよい湿地や浅い水中に群生する。和名は、枯れた茎を弓の矢柄に例え、それが水に浮かぶことによる。朝鮮、中国、さらに北アメリカにも分布する。

[木下栄一郎 2019年7月19日]

ウキヤガラ
茎の先に散房状の花序をつけ、褐色の小穂を十数個つける。日当りのよい湿地や浅い水中に群生する©Shogakukan 撮影/広瀬雅敏">

ウキヤガラ


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