According to the USDA's Forest Products Lab site, there are 45 trees that fall under the name Mesquite. I've been saving some mesquite boards for about 7 years and now have a project to put them to use on. Only problem is, I think after cutting around defects and splits I'm going to need another stick or two. I'd like to get the same species, but I'm not exactly sure what I've already got. I'm hoping somebody with more mesquite experience than I can tell from the pics.
I bought mine at Woodworkers Source in Phoenix on a trip to AZ and they told me then that it was locally harvested mesquite. Their website page for mesquite says what they have now is Prosopis juliflora. The pic on their page http://www.woodworkerssource.net/Mer..._Code=Mesquite sort of looks like mine, but their's no garantee that what they were selling 7 yrs ago is what they are currently selling. My confusion is that the USDA FPL info says that Prosopis juliflora is a South American mesquite.
The USDA info for the various mesquites starts on page 95 of their pdf file at
http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr83.pdf
Here's the pics of what I already have. Anybody care to hazard a guess??