Walnut?

Thanks; it might indeed be Black Walnut (J. nigra). Wikipedia has a good photo of a walnut shell inside the green husk.

Not Black Walnut, nor Butternut, for that matter. Looks more like a hickory of some sort. Perhaps shagbark.

tj

Yes, I agree, more likely Hickory.

hickory for sure ... you should be able to break off the green part.. and find the shelled hickory nut inside .. it should break out rather easily ... once it dries a bit ...

ken

....and quite possibly tasty! Unless, of course, it be bitternut hickory. Those be bitter! The shagbarks around here taste good, or so the squirrels tell me.

+oM

Thank you!

I wish now that I had kept it (or eaten it) instead of leaving it in the park. Next time I'll be more knowledgeable, thanks to the kind posters here!