# Cirsium horridulum var. horridulum

> variety of plants

**Wikidata**: [Q24690614](https://www.wikidata.org/wiki/Q24690614)  
**Source**: https://4ort.xyz/entity/cirsium-horridulum-var-horridulum


## References

1. Integrated Taxonomic Information System
2. Global Biodiversity Information Facility
3. World Register of Marine Species
4. Tropicos
5. GRIN Taxonomy for Plants
6. Flora of North America
7. United States Department of Agriculture Plants Database
8. World Flora Online
9. Native Plants Database
10. New York Flora Atlas
11. North Carolina Extension Gardener Plant Toolbox
12. Maryland Plant Atlas
13. Flora of the Southeastern United States