As it turned out, all the wood I got from the trimming was from a nectarine tree.
I got some small trimmings and a few good sized logs (6" dia). The logs were from a branch that had broken off early last summer and had been dangling from the tree since.
I burned a chunk of both the big stuff and the smaller stuff sunday. Great smelling stuff, didn't use enough on the p-rib I cooked to have any sense of flavor, but I'm sure the stuff is dry enough to cook with and I'm ready to see what it does in more substantial doses. The smell while warming on the firebox was awesome, this would seem to be really good stuff.