# Cirsium douglasii var. douglasii

> variety of plants

**Wikidata**: [Q24690590](https://www.wikidata.org/wiki/Q24690590)  
**Source**: https://4ort.xyz/entity/cirsium-douglasii-var-douglasii


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Integrated Taxonomic Information System
3. Global Biodiversity Information Facility
4. World Register of Marine Species
5. Tropicos
6. Flora of North America
7. United States Department of Agriculture Plants Database
8. UMLS 2023
9. Plants of the World Online
10. World Flora Online
11. Native Plants Database
12. CalPhotos