Paul, the only reason it looked familiar to me is that Seagrape is very common here in Florida and I also have a Cissus rotundifolia plant that looks identical to the one in your photos and the leaves of this particular Cissus do resemble those of the Seagrape.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!
