While surely no one has searched all of N.C for this tree.
It is only reported from one location, Rocky point in N.C. According to this site. So may be very rare there, and a good find if that’s what it is !
https://www.carolinanature.com/trees/camy.html
I have no idea about this one ?
Could your tree/nut be a red hickory ?
On my place red hickory is most common… then pignut… then mocker… I have found a couple that may be shag but no nuts to confirm that with.
Of the hickories that I have learned to id… your looks more like a red to me than the others.
First here is a pic that may help some…
Top left shellbark nuts from a couple different teees.
Top right shag again couple diff trees.
Bottom left mocker…
Bottom right red hickory.
That is a pic of a red growing in my field.
This pic shows pignut (with snout) on left… and red hickory on right.
The reds tend to split off in sections more on the husk. The husk on pig and red have similar thickness… but they are both much thinner than shag or mocker.
When you remove the husk… the red and pignut are pretty much the same. I have eaten both red and pig… and they tasted very similar to me. They do not crack out well.
