Lecythidaceae

Lecythidaceae, commonly known as the Brazil nut family, is a pantropical group of evergreen trees. This family comprises about 25 genera and 350 species, with distinct geographic distributions. A significant portion of the family, approximately 10 genera and 215 species, is found in the Neotropics, including prominent genera like Eschweilera and Gustavia. Another group, consisting of 6 genera and 91 species, is found in the Old World, such as Barringtonia.

Members of this family typically have leaves clustered at branch ends, often with serrated margins. Their flowers can be large, with numerous stamens, and exhibit diverse pollination mechanisms involving large bees, bats, and small bees. The fruits are woody and operculate, meaning they have a lid-like structure. The most famous member is the Brazil nut tree (Bertholletia excelsa), known for its nutritious seeds, which are commercially important but ecologically sensitive, requiring undisturbed habitats for fruit production. The wood of some species, like Scytopetalum tieghemii, is valued for its resistance to decay.1234