I grew up in the land of the black walnut, Juglans nigra. And, if you grew up in the eastern US, then you did too. It has a very large range in eastern North America. The eastern US forests also have pecans, hickories and other walnut species, all of which are trees in Juglandaceae, the walnut family.
Juglans major is the only native species of walnut in Arizona. The species J. microcarpa is not that far away to the east in New Mexico and Texas and there are rumors of it being found in Arizona. Cool!
I love Arizona walnut! I’ve collected walnuts all over the borderlands and grown it for many years. It’s a fast grower when it’s young and grows to a magnificent long lived shade tree. You could plant one for your kids, grand kids, great grand kids or great great grand kids. How sweet is that? Very.
The photos are mine and taken at our home.