# Echinocactus polycephalus var. polycephalus

> variety of plants

**Wikidata**: [Q24691849](https://www.wikidata.org/wiki/Q24691849)  
**Source**: https://4ort.xyz/entity/echinocactus-polycephalus-var-polycephalus


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Integrated Taxonomic Information System
3. Global Biodiversity Information Facility
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. Open Tree of Life reference taxonomy version 3.2
11. CalPhotos