GO here, get a real wood identification kit:http://www.firewoodtreasures.com/woodkit1.asp
Here is a post I wrote back in 2008 on the router forums and it still holds up well, I think the links work too, Scroll down to dovetail_65.:http://www.routerforums.com/tools-woodworking/10628-how-identify-wood-species.html
You need to cut a sliver so I can see cleanly cut end grain and mail or email it to me. I can use a 10 times loupe and check the end grain against my books of 10,000 woods end grain pics if you like.
You can do this yourself. This is the only true way to know the wood species, the end grain shows like a thumbprint.
You can buy a kit that teaches wood identification with samples, a loupe and and instruction to practice with. Or just buy a loupe from amazon. Do not get fooled by the kits where they send you samples of wood face grain veneers(which are useful for other purposes), you need a kit with samples of the end grain for identification.
This kit above linked above is nice and can be fun to do with the kids too, you just use the razor. But dont forget the key, this is the hardwood key link, they offer a softwood key as well.: http://www.firewoodtreasures.com/identkey_H.asp
Below are a few walnuts, cut the end grain, look through a loupe and match it. There are places online that have thousands you can check against. But getting a kit from the place I linked above and practicing is the best way and fun too!:
American Black Walnut
Here is the best website for wood identification I know of:http://hobbithouseinc.com/personal/woodpics/http://hobbithouseinc.com/personal/woodpics/_cross_ref_COM.htm