Dioscorea villosa - Wild yam?

I thought of that, but the ones I've found to date were only about a third that size. Do those get that large?

Looks like aristolochia to me. Since the time I lived in the east, the genus has apparently been split into isotrema. Also the common species, aristolochia durior, has apparently been renamed isotrema macrophylla. Yours might be isotrema reticulata.

Thanks a bunch. It does look like Isotrema, and is likely I. tomentosum. I also checked bloom dates, and they were probably in flower.

is it posioness