While on vacation during early July in the land of my birth and early childhood, the lovely mountains of southern West Virgina, my wife and I chanced upon this amazing rose display just outside of Bramwell, WV. The plant had evidently spread, rooting wherever it touched the ground, making a large patch full of flowers spilling over the rocks near the road's edge. I dug up a small sucker and successfully reestablished it in a pot back home in NY. It survived last winter outside in my backyard, and has grown larger but not flowered yet. I need to find a place in the ground for it, but can't think of a location large enough to comfortably accomodate its potential spread.
I do not have any idea what cultivar this is, but it might be a cross with a wild species of rose. The single flowers appear to be too large for any of the local native species of Rosa, but it is not a common hybrid either. Any help with ID from rose experts would be greatly appreciated!