Morus is a genus of flowering plants in the family Moraceae that are commonly known as Mulberries. They are native to warm temperate and subtropical regions of Asia, Africa, Europe, and the Americas; with the majority of the species native to Asia. - at least that's what I've read.
Mulberries are swift-growing when young, but soon become slow-growing and rarely exceed 33–49 ft tall.
The ripe fruit is edible and is widely used in pies, tarts and wines.
Below is great example of an old Mulberry in excellent condition. I'm just not sure what kind of Mulberry it is.
I consider this my training tree, when I need low and slow this tree fits the bill. It makes a nice beginner tree at 30-35' high.