A small annual plant of the Cyperaceae family. It is found in Japan, the Korean peninsula, Taiwan, India, Malaysia, etc., and commonly grows in wetlands and paddy fields. The stems grow in large numbers, are thin and whisker-like, and are about 20 cm tall. They have no leaves. Flowers bloom from early summer to autumn, with spikelets about 5 mm in size, ovate to narrow ovate, at the top of the stem. The scales, which are modified bracts, are ovate and purple-brown, and the perianths are needle-like, with 5 to 6 in all. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
カヤツリグサ科の小型の一年草。日本,朝鮮半島,台湾,インド,マレーシアなどに分布し,原野の湿地や水田などに普通に生える。茎は多数叢生し,ひげ状で細く,高さ 20cmぐらい。葉はない。花は初夏から秋にかけて,茎の頂に卵形から狭卵形の 5mmほどある小穂をつける。包葉が変化した鱗片は卵形で紫褐色,花被は針状となり5~6本ある。
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