What plant family contains butterworts, bladderworts, and corkscrew plants?

Butterworts, bladderworts, and corkscrew plants belong to the carnivorous plant family Lentibulariaceae.

The family contains three principal genera: Pinguicula, the butterworts; Utricularia, the bladderworts; and Genlisea, the corkscrew plants. They use different trapping mechanisms, making Lentibulariaceae a useful example of how carnivorous plants have evolved varied solutions to nutrient-poor environments.

Butterworts capture small organisms on sticky leaves. Bladderworts use tiny suction traps, especially in aquatic or waterlogged habitats. Corkscrew plants have underground, spiral-shaped structures that trap microscopic prey. These differences can make the family name harder to remember than its familiar common names.

Older classifications sometimes treated Polypompholyx and Biovularia as separate genera within the family. Modern treatments place Polypompholyx within Utricularia, while Biovularia has also been subsumed into that genus.