Photo by Bob Thomas, Bush Bush, Trinidad.

Photo by Bob Thomas, Chiquibul Education Centre, Las Cuevas, Belize.

Photo by Bob Thomas, Chiquibul Education Centre, Las Cuevas, Belize.
Photo by Bob Thomas, San Miguel, Toledo District, Belize.

Zanthozylem, toothache tree in the U.S., is widely distributed in the New World tropics.  In Trinidad, the local name is Monkey No Climb (for Z. martincense), for obvious reasons.  In Belize, they are called Prickly Yellow (there are 8 species).  No other tree has the large, conical thorns, but note the “road bumps” on the two above from Chiquibul (the morphology of the smaller thorns are the same, just smaller).