Fun. I did grit my teeth and snarl over damned ailanthus being listed first, not even a true North American tree. Its common name, tree of heaven, I've changed to tree of hell. It might be positively splendid in Asia, but it is taking over the edges of the woods over here--and it comes up through concrete in the city. Other than the damned ailanthus, I like the list, wwh. Why don't you send me a leaf sample?