Last year I noticed a vine that had attractive blue and white flowers. This year it is back and seems to spread by runners. It seems to be fairly invasive.
William,
this is the native passion flower, Passiflora incarnata, a very showy wildflower vine associated with various legends. Much more about it can be found here: http://en.wikipedia.org/wiki/Passiflora_incarnata
Sincerely,
Dr. Steven R. Hill, Botanist SCNPS