Can anyone ID this leaf?

[DanMcG]

I'm stumped. This has been in my side yard but I guess I never took a good look at it before. I always assumed it was a ash then yesterday I noticed the leaf shape. It looks familiar but I cant find anything on-line.
Any guesses?

 

[yankee2bbq]

Wild guess here.....
Walnut??

 

[worldbfreebase]

boxelder

 

[DanMcG]

boxelder

I think you got it WFB, thanks!