# Helianthus occidentalis subsp. occidentalis

> subspecies of plant

**Wikidata**: [Q24688237](https://www.wikidata.org/wiki/Q24688237)  
**Source**: https://4ort.xyz/entity/helianthus-occidentalis-subsp-occidentalis


## References

1. Integrated Taxonomic Information System
2. Global Biodiversity Information Facility
3. Tropicos
4. GRIN Taxonomy for Plants
5. Flora of North America
6. United States Department of Agriculture Plants Database
7. Plants of the World Online
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. Indiana Plant Atlas
14. Flora of the Southeastern United States