# Ballota nigra subsp. nigra

> subspecies of plant

**Wikidata**: [Q19607777](https://www.wikidata.org/wiki/Q19607777)  
**Source**: https://4ort.xyz/entity/ballota-nigra-subsp-nigra


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Global Biodiversity Information Facility
3. Tropicos
4. Database of Vascular Plants of Canada
5. [Finnish Biodiversity Information Facility](https://laji.fi/taxon/MX.39480)
6. African Plant Database
7. UMLS 2023
8. BDTFX v7.00
9. TAXREF v12.0
10. TAXREF v13.0
11. TAXREF v14.0
12. TAXREF v15.0
13. TAXREF v16.0
14. National Biodiversity Network
15. Nederlands Soortenregister
16. World Checklist of Selected Plant Families
17. Plants of the World Online
18. FloraWeb
19. European Nature Information System
20. Finnish Biodiversity Information Facility
21. World Flora Online
22. Open Tree of Life reference taxonomy version 3.2
23. Naturbasen
24. Flora Croatica Database