# Pterocaulon pycnostachyum

> species of plant

**Wikidata**: [Q15600209](https://www.wikidata.org/wiki/Q15600209)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pterocaulon_pycnostachyum)  
**Source**: https://4ort.xyz/entity/pterocaulon-pycnostachyum


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Integrated Taxonomic Information System
3. Global Biodiversity Information Facility
4. World Register of Marine Species
5. Tropicos
6. International Plant Names Index
7. The Plant List 1.1
8. Flora of North America
9. United States Department of Agriculture Plants Database
10. UMLS 2023
11. Nederlands Soortenregister
12. Plants of the World Online
13. Interim Register of Marine and Nonmarine Genera
14. World Flora Online
15. Native Plants Database
16. Open Tree of Life reference taxonomy version 3.2
17. Flora of the Southeastern United States
18. CalPhotos