Vicia americana American vetch

Vicia americana American vetch

Information from USDA Plants Database 

http://plants.usda.gov/java/profile?symbol=viam

https://www.google.com/search?q=Vicia+americana+American+vetch&hl=en&source=lnms&tbm=isch&sa=X&ei=5hJLUbzsKsKJiALvgoCYBg&ved=0CAcQ_AUoAQ&biw=1008&bih=522