We have a single, absolutely distinctive species, the leaves modified into a pitcher-like shape in which water accumulates, drowning insects and other small organisms that slip into it, foiled in their escape by downward-pointing hairs on the inside of the pitcher. The plants derive some nutrients from this source of protein.
All species found in Sarracenia
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 21, 2019. https://www.michiganflora.net/genus.aspx?id=Sarracenia.