I was driving home from taking my harvest photos when I came across this growing in a yard by the side of the road. I had to turn around and go back for a shot of it. I have no idea what it is, but it has some long (about 4 inches!), nasty looking thorns growing out of each shoot. You may be able to see them if you click on the picture.
Do you know what this is? Leave me a comment if you do. I'd sure like to know.