# Echinomastus johnsonii

> species of plant

**Wikidata**: [Q289673](https://www.wikidata.org/wiki/Q289673)  
**Source**: https://4ort.xyz/entity/echinomastus-johnsonii


## References

1. Das große Kakteen-Lexikon
2. Freebase Data Dumps. 2013
3. Taxonomy database of the U.S. National Center for Biotechnology Information
4. Integrated Taxonomic Information System
5. Global Biodiversity Information Facility
6. Tropicos
7. International Plant Names Index
8. The Plant List 1.1
9. Flora of North America
10. United States Department of Agriculture Plants Database
11. UMLS 2023
12. Plants of the World Online
13. Interim Register of Marine and Nonmarine Genera
14. Native Plants Database
15. CalPhotos