# Echinocactus simpsonii

> species of plant

**Wikidata**: [Q12294342](https://www.wikidata.org/wiki/Q12294342)  
**Source**: https://4ort.xyz/entity/echinocactus-simpsonii


## References

1. Additions to the Cactus-Flora of the Territory of the United States
2. Integrated Taxonomic Information System
3. Global Biodiversity Information Facility
4. Tropicos
5. International Plant Names Index
6. GRIN Taxonomy for Plants
7. Plants of the World Online
8. Interim Register of Marine and Nonmarine Genera
9. World Flora Online