This flowering vine occurs in the Southeastern United States and is commonly called Passion flower or may pop. The flower, fruit and vine are all useful to a variety of wildlife species. Insects such as the Gulf Fritillary and zebra longwing use it as a host plant for their larva. Native Americans used the fruit as a treat and leaves to make a herbal tea.
I think the flower is delicate looking. I read that the flower is specifically adapted to allow only certain bees to pollinate it. It's interesting to learn about the intricate workings in nature.