What tree is related to allspice tree?

The West Indian bay tree (Pimenta racemosa) is a relative of the allspice tree (P. dioica).

Specifically, both trees are in the "peppercorn" genus of the myrtle family (Myrtaceae). They both are located in the Americas, with the allspice being native to the Caribbean, Central America, and North America (southern Mexico) and the bay to the Caribbean. Parts of both trees will be found as beloved ingredients in Caribbean cuisine.