This is my favorite plant but I still don't know the name. A friend had this almost covering his house and he said it's part of the Boston Ivy family. Why Boston I have no idea but it does look similar with more delicate leaves.
I had it half way around my property in Villa Obregon supported by a chain-link fence. The landlord cut it back to almost nothing and his wife was furious. I was pulling out the dead branches for weeks but within six months it was all back. I have another on my chain-link fence and am thinking of one in the back corner of the garden. It will eventually cover those bare brick walls. I don't plan to let it near the house because I've seen what ivy can do to a house up north.
Mexican Ivy (cissus)
The Villa Obregon house - Mia 2 year birthday
The rest of the garden - as it is