I agree. We used to have loads of lady slipper orchids in the woods around here but no more. I don't know if the decline is due to environmental conditions, poaching, or both, but I miss seeing them on my walks.

It reminds me of polygonum (but I am not an expert). Consider the photo of this polygonum (scroll down): http://www.arthurleej.com/p-o-m-Oct03.html There are a bunch of different polygonums (200 according to the link). The one I am most familiar with from Illinois is lady's thumb; I have a bit of it here in WNC, also tear-thumb (definitely correctly named), and at least one which lacks the midleaf-spot and claws which I haven't tried very hard to differentiate from all the other polygonums. Let it flower and see if that makes identification easier. The ones I've seen all have flowers in the red-pink-pale pink spectrum. The one at the link apparently flowers greenish-white. I don't know if there are other colors. USDA has 80 of them here (knotweed, smartweed, etc.)., 25 of which are found in Texas: http://plants.usda.gov/java/profile?symbol=polyg4

I'd go with weedwoman's id. Ragged Robin is a British native which likes damp situations. 'Jenny' is more double and fringed. It is definitely not a mint flower and the foliage behind doesn't belong to the flower anyway as the OP stated.

IMHO Flower Carpet roses have gotten a bad rap on this Forum. I may take a look at Pink Supreme for a place in my landscape.