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
12. willow (wood)

Anotations

Scope note:

Wood of the species Salix alba, native to the British Isles, Europe, and North Asia but naturalized in the U.S. and elsewhere. It is tough, strong, and lightweight, but prone to decay. The wood is used for charcoal; the stems (withies) are used for basketmaking.