What is this FL tree?

[Yunder Wækraus]

I'm 99% sure this is a FL native. I've seen it in two different parks in Brevard County. What is it? I really dig it. Are these available in the nursery trade?

[Yunder Wækraus]

This is the most likely candidate thus far (though the trunk is much more bumpy and knotted looking on the individual I photographed): https://en.wikipedia.org/wiki/Zanthoxylum_clava-herculis

[Eric in Orlando]

YEs. Hercules Club Tree. Its a good host plant for the Giant Swallowtail butterfly .

[RedRabbit]

Thanks for IDing it Eric. I don't recall ever seeing this tree before, but apparently they've got a pretty wide range:

The Hercules-club inhabits sandy soils near the coast, riverbanks, and low, fertile valleys near streams in association with other hardwoods.  It is found on the Atlantic coastal plain from southeastern Virginia to southern Florida; west through the Gulf states, Lousiana, Arkansas, Texas, and to the Colorado River Valley. 

http://www.sfrc.ufl.edu/Extension/ffws/tfrut.htm