# Douglas' Knotweed

> subspecies of plant

**Wikidata**: [Q49460481](https://www.wikidata.org/wiki/Q49460481)  
**Source**: https://4ort.xyz/entity/douglas-knotweed


## 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. United States Department of Agriculture Plants Database
6. UMLS 2023
7. Native Plants Database
8. Open Tree of Life reference taxonomy version 3.2
9. CalPhotos