Common name: Yellow pitcherplant
Sarracenia flava is an insect-eating plant that lives in wetlands and bogs. It is native to the southeastern US. The yellow pitcher plant traps insects using a rolled leaf. The uppermost part of the leaf is flared into a lid (operculum), which prevents excess rain from entering the pitcher and diluting the digestive secretions within. More about the Sarracenia genus.
Photo with fly by Hughie Jones