Hura crepitans is commonly called the sandbox tree, a poisonous tropical tree famous for its explosive seed capsules.
The sandbox tree is native to tropical regions of North and South America and belongs to the spurge family, Euphorbiaceae. Its trunk is covered with sharp spines, while its milky sap is caustic and toxic. These defenses help explain why the tree has acquired alarming regional names, including dynamite tree and monkey-no-climb.
When mature, the pumpkin-shaped fruit capsule splits explosively along its sections. The flattened seeds can be launched at high speed, helping the tree disperse them away from the parent. The species name crepitans refers to this crackling or explosive behavior.
The name sandbox has a historical origin rather than a reference to children’s play areas. Before modern ink-drying materials, empty seed capsules were fashioned into containers holding fine sand, which was sprinkled over wet writing. The tree is therefore easy to confuse with other tropical trees, but none of the listed alternatives is its standard common name.