Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. plant material
8. [wood and wood by product]
9. wood (plant material)
10. [wood by composition or origin]
11. hardwood

Anotations

Scope note:

Specifically, tropical hardwood from trees of the genus Rhizophora. The wood from mangrove trees is primarily used for making charcoal or for poles in frame construction in houses. The term is also used in a general sense for wood from any tree having adaptations for living in water similar to those of genus Rhizophora.