# Umbilicaria rigida

> species of fungus

**Wikidata**: [Q10547034](https://www.wikidata.org/wiki/Q10547034)  
**Source**: https://4ort.xyz/entity/umbilicaria-rigida


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Encyclopedia of Life
3. Global Biodiversity Information Facility
4. MycoBank
5. United States Department of Agriculture Plants Database
6. [Finnish Biodiversity Information Facility](https://laji.fi/taxon/MX.66752)
7. Dyntaxa
8. National Biodiversity Network
9. Finnish Biodiversity Information Facility
10. Open Tree of Life reference taxonomy version 3.2
11. E-Flora BC
12. Consortium of Lichen Herbaria
13. CalPhotos