# Helleborus viridis subsp. occidentalis

> subspecies of plant

**Wikidata**: [Q48068188](https://www.wikidata.org/wiki/Q48068188)  
**Source**: https://4ort.xyz/entity/helleborus-viridis-subsp-occidentalis


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Global Biodiversity Information Facility
3. Tropicos
4. The Plant List 1.1
5. UMLS 2023
6. BDTFX v7.00
7. TAXREF v9.0
8. TAXREF v10.0
9. TAXREF v11.0
10. TAXREF v12.0
11. TAXREF v13.0
12. National Biodiversity Network
13. Nederlands Soortenregister
14. Plants of the World Online
15. FloraWeb
16. European Nature Information System
17. Belgian Species List
18. World Flora Online
19. Open Tree of Life reference taxonomy version 3.2