# Pediocactus simpsonii var. nigrispinus

> variety of plants

**Wikidata**: [Q14974327](https://www.wikidata.org/wiki/Q14974327)  
**Source**: https://4ort.xyz/entity/pediocactus-simpsonii-var-nigrispinus


## References

1. Global Biodiversity Information Facility
2. Tropicos
3. International Plant Names Index
4. Plants of the World Online
5. World Flora Online
6. CalPhotos