While visiting Tyndall AFB this weekend I saw a tree growing there that I swear is a Macadamia. Every description I've been able to find for the rough-shelled macadamia tree matches this tree, (except for leave length). Leaves are about 6-8 inches in lenght, has small spines on the edges of the leaves, (a toothed margin). Flowers are born on racemes.

Just wondering is anyone knows of macadamia trees growing this far north.