# Carduus nigrescens

> species of plant

**Wikidata**: [Q15558317](https://www.wikidata.org/wiki/Q15558317)  
**Source**: https://4ort.xyz/entity/carduus-nigrescens


## References

1. [Herbarium of the University of Coimbra (COI)](http://coicatalogue.uc.pt/specimen/COI00039637)
2. The Plant List
3. Encyclopedia of Life
4. Global Biodiversity Information Facility
5. Tropicos
6. International Plant Names Index
7. The Plant List 1.1
8. Dyntaxa
9. African Plant Database
10. BDTFX v7.00
11. TAXREF v9.0
12. TAXREF v10.0
13. TAXREF v11.0
14. TAXREF v12.0
15. TAXREF v13.0
16. TAXREF v14.0
17. TAXREF v15.0
18. TAXREF v16.0
19. National Biodiversity Network
20. Nederlands Soortenregister
21. Plants of the World Online
22. World Flora Online
23. Open Tree of Life reference taxonomy version 3.2
24. FloraVeg.EU