Wild cucumber (Echinocystis lobata)

http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=ECHLOB

http://www.ct-botanical-society.org/galleries/echinocystisloba.html

http://www.wiseacre-gardens.com/plants/wildflower/cucumber.html

I have not grown this plant for many years. The seeds are hard to find, but I really should make the effort.

http://www.yuko.ca/index.html (seeds for sale)