捕虫堇属（学名：Pinguicula），为多年生草本植物，多分布于温带北部，中国西南及中部也有少量分布。其叶呈旋叠状，叶面上有腺体能分泌黏液粘住昆虫，叶缘稍向上弯。当昆虫被雨水冲至叶缘时，叶缘即受刺激旋卷将虫包于其内，然后分泌一种消化液将虫体消化后，随即恢复成原来的状态。

Pinguicula, commonly known as the butterworts, is a genus of carnivorous plants that use sticky, glandular leaves to lure, trap, and digest insects in order to supplement the poor mineral nutrition they obtain from the environment. Of the roughly 80 currently known species, 12 are native to Europe, 9 to North America, and some in northern Asia. The largest number of species is in South and Central America.