When I first came across this tree, I thought it was a berries tree or some kind. With help from LK, I got its id.

Hura crepitans, with many common names such as monkey's dinner-bell, sand-box tree, possum wood, dynamite tree, etc. It is recognized by the many dark, pointed spines and smooth brown bark. These spines have caused it to be called Monkey no-climb too.




The irritant latex is used as a barbasco and arrow poison, and is said to cause ailing teeth to fallout. the latex is used to treat skin diseases, rheumatism, and intestinal worms and was formerly used in the United states to prepare tear gas. The poisonous seeds, eaten by macaws, are used as a purgative in Costa Rica. they are used to poison noxious animals. The dry leaves are eaten by cattle during the dry season. A bark extract is used for leprosy. The wood is used locally in light construction, and for dugouts. Burning wood repels insects. (source from Webster)
