# Usnea wirthii

> species of fungus

**Wikidata**: [Q21303491](https://www.wikidata.org/wiki/Q21303491)  
**Source**: https://4ort.xyz/entity/usnea-wirthii


## References

1. Integrated Taxonomic Information System
2. Global Biodiversity Information Facility
3. MycoBank
4. Index Fungorum
5. United States Department of Agriculture Plants Database
6. New Zealand Organisms Register
7. Interim Register of Marine and Nonmarine Genera
8. Belgian Species List
9. Open Tree of Life reference taxonomy version 3.6
10. Biota of New Zealand
11. CalPhotos