Darker leaf, heart-shaped taking over my Texas Sage
http://s181.photobucket.com/albums/x...t=100_0583.jpg
snailseed vine, _Cocculus carolinus_

Yes, Treedweller! This has to be it! Having the advantage of going
back and looking more closely at the vine and viewing all each
suggestion online, this snailseed vine seems to be the one. I had
never heard it. Thanks to all who took the time to respond.



Poison Ivy?
http://s181.photobucket.com/albums/x...t=100_0588.jpg
no, I don't think so. Are the leaves fleshy? kind of thick and juicy?
That's something else--I can't ID it, but it's not itchy.

Thick and juicy? Like a big steak? No, these leaves are thin and are
not glossy.