types of walnut trees species
Different Kinds of Walnut Trees. Walnuts are the seeds of walnut trees. Deciduous walnut trees (Juglans), well known for their characteristic walnut seeds, or walnuts, belong to the Juglandaceae family of plants. The genus comprises 21 species and includes members that grow in temperate zones across the world.
There are 5 native walnut species in North America - black walnut, butternut, Arizona walnut and two species in California. The two most commonly walnuts found in the wild are black walnut and butternut and listed below.