An annual aquatic plant in the family Hormonaceae (APG classification: Hormonaceae). The leaves are soft, weak, basal, sessile, and linear-lanceolate. They are 10-30 cm long, a few millimeters wide, and have clearly serrated edges. From August to October, a flower stalk several centimeters long emerges from the leaf axil, with a single cylindrical sheath 3-5 cm long at the top, from which a single pale green bisexual flower emerges. Both the petals and sepals are linear and three-leaf. The seeds are elliptical, with warty protrusions scattered on the surface, and both ends are sharp like thorns. They grow in rice paddies and ditches, and are widely distributed in Japan west of Honshu, Asia, and Australia. In the Chukyo region, women's disheveled hair is called "subutagama," which is said to be an analogy to the way the leaves of the subuta plant flutter about in the water. [Sueo Otaki, September 19, 2018] ©Kanzo Otawa "> Subuta (specimen drawing) Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
トチカガミ科(APG分類:トチカガミ科)の一年生水草。葉は柔らかくて弱く根生し、無柄で線状披針(ひしん)形。長さ10~30センチメートル、幅数ミリメートル、縁(へり)の微鋸歯(きょし)は明瞭(めいりょう)である。8~10月、葉腋(ようえき)から数センチメートルの花茎を出し、上方に円筒状で長さ3~5センチメートルの包鞘(ほうしょう)を1個つけ、中から淡緑色の両性花を1個出す。花弁、萼片(がくへん)ともに三枚で線形。種子は楕円(だえん)形で表面にいぼ状の突起が散在し、両端は刺(とげ)状にとがる。水田や溝に生え、本州以西の日本、アジア、オーストラリアに広く分布する。中京地方で女性の乱れ髪のことをすぶた髪というが、これは、スブタの葉が水中で乱れてなびくことになぞらえたものという。 [大滝末男 2018年9月19日] ©大多和鐘三"> スブタ〔標本画〕 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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