Jim, What other forums and listservs have you posted this mystery plant on? It might be helpful to read what others have noticed and suggested. My money is still on Parthenocissus. I completely ruled out Akebia long ago because the mystery plant leaves are way too textured, have scalloped margins, and have significant red pigmentation in their leaf petioles. Akebia would have likely grown up through the Junpier and not stayed on the ground. Akebia does not explain the surface runners with the simple non-compound leaves seen all along the edge of the plant growing out on the brick sidewalk, assuming this is part of the same plant. Doesn't anyone else see these runners? Amazing that we can't even agree on the genus, let alone the species. Nathan