sundew

...A carnivorous plant of the genus Drosera in the family Droseraceae, which has numerous glandular hairs on the surface of its circular leaf blades and secretes mucus to adhere to small animals and prey on them (illustration). Perennial plant. The stem is usually short, and the leaves are basal. The petiole is 0.5-7.0 cm long, the leaf blade is 0.5-1.8 cm wide, and the surface is covered with numerous green to reddish purple glandular hairs 0.5-5 mm long. The Japanese name for this plant was given to this group of glandular hairs, which resemble a "foliage." The glandular hairs not only adhere to small animals, but also bend in 15-20 minutes due to changes in volume caused by changes in turgor pressure and cell elongation caused by indole acetic acid, moving the prey to the center of the leaf blade and enveloping it. ...

*Some of the terminology that mentions "sundew" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…円形をした葉身の表面に多数の腺毛をもち，粘液を出して小動物を粘着捕食する，モウセンゴケ科モウセンゴケ属の食虫植物（イラスト）。多年草。茎は普通短く，葉は根生する。葉柄は長さ0.5～7.0cm，葉身は幅0.5～1.8cm，表面に多数の緑～紅紫色で，長さ0.5～5mmの腺毛が分布する。この腺毛群を〈毛氈〉にみたてて和名がついた。腺毛は小動物を粘着するだけでなく，膨圧の変化による容積の変化とインドール酢酸による細胞の伸長により，15～20分で湾曲させて，獲物を葉身中央部へ移動させ，包みこむ。…

※「sundew」について言及している用語解説の一部を掲載しています。

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