Commonly known as pitcher plants (see the leaves of the pitcher plant via Google Image Search for the reason why), the genus Sarracenia is solely distributed in eastern North America.
Its family, the Sarraceniaceae, contains three genera: Sarracenia, Darlingtonia (native to California and southern Oregon), and the South American genus Heliamphora. Each of these genera have highly modified leaves that are used to entice and trap insects for food. As they are bog plants, access to nutrients is a challenge; insectivory, which gives the plants access to a fairly high amount of nitrogen, is an effective adaptation to the stress of living in a nutrient-poor environment.
This flower photograph of Sarracenia purpurea was taken at the edge of the Libau Bog Ecological Reserve in Manitoba last year.