It's a grape vine. Possibly Vitis rotundifolia?

M. Reed

greg wrote:
Can anyone help id this vine
http://tatteredcloak.blogspot.com/20...ification.html from
my brother-in-law's backyard in south-central Illinois, please? He is
highly sensitive to a lot of flora species and is concerned as this
seems to be taking over his backyard fence. Thank you.