An annual plant of the Utricularia family (APG classification: Utricularia family). Its white, thread-like underground stems crawl through shallow mud, with small insect-trapping sacs scattered throughout, which capture and digest tiny animals. The aboveground leaves are linear and small, 0.6-1 cm long. The flower stalk is thin, 7-15 cm tall, and sparsely covered with scaly leaves. From August to October, it produces several small yellow flowers with small pedicels. The spur of the corolla curves diagonally downward. After flowering, the calyx grows larger and encases the fruit, forming an earpick shape. The name comes from this resemblance to an earpick. It grows in muddy marshes in hilly and mountainous areas, and is distributed from Honshu to Okinawa, as well as China, India, Malaysia, and Australia. [Hideo Takahashi October 20, 2021] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
タヌキモ科(APG分類:タヌキモ科)の一年草。白い糸状の地下茎が浅い泥中をはい、小さな捕虫嚢(のう)をまばらにつけ、微小な動物をとらえて消化する。地上葉は線形、長さ0.6~1センチメートルと小さい。花茎は細く、高さ7~15センチメートル、まばらに鱗片葉(りんぺんよう)をつける。8~10月、小花柄のある黄色の小花を数個開く。花冠の距(きょ)は斜め下向きに湾曲する。花期後、萼(がく)は大きくなって果実を包み、耳かき状となる。名は、この形を耳かきに見立てていう。丘陵から山地の泥湿地に生え、本州から沖縄、および中国、インド、マレーシア、オーストラリアに分布する。 [高橋秀男 2021年10月20日] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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