The Venus flytrap, Dionaea muscipula (Family Droseraceae), has a highly modified leaf in which the petiole is photosynthetic and winged whereas the blade has evolved as a bivalved trap. The Venus flytrap, Dionaea muscipula (Family Droseraceae), has a highly modified leaf in which the petiole is photosynthetic and winged whereas the blade has evolved as a bivalved trap.