Ann, look at the following link and see if this is what you have. If so, get rid of it fast because it can take over very easily.

Here is a link that might be useful: Air potato

Thanks so much for your reply .
The vine does look like the Air Potato , I do think that it comes from that family but its a much tamer vine.
My mother in law had vine before I came into the family 37 years ago . That is where I got my start of the seeds 15 years ago . It is a fast grower to start with each spring but it never really get out of hand like the Air Potato like the one in the link . This one grows fast for awhile and then it stops growing .At this time of the year here in
Kentucky , it starts to die .
My plant or my Mother in law's has never grew anything like I was reading from the link .Ours has just grew around the porch post's and has never spread in the yards or trees .
I have to admit, after reading about the Air Potato it has gave me something to think about .
Thanks so much for your reply .
Ann