# Helleborus niger

> species of plant

**Wikidata**: [Q147834](https://www.wikidata.org/wiki/Q147834)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Helleborus_niger)  
**Source**: https://4ort.xyz/entity/helleborus-niger


## References

1. Species Plantarum. 1st Edition, Volume 1
2. Freebase Data Dumps. 2013
3. Taxonomy database of the U.S. National Center for Biotechnology Information
4. Integrated Taxonomic Information System
5. Encyclopedia of Life
6. [BioLib](https://www.biolib.cz/cz/taxon/id38297/)
7. Global Biodiversity Information Facility
8. Tropicos
9. International Plant Names Index
10. The Plant List 1.1
11. GRIN Taxonomy for Plants
12. Database of Vascular Plants of Canada
13. United States Department of Agriculture Plants Database
14. [FloraWeb](http://www.floraweb.de/pflanzenarten/artenhome.xsql?suchnr=2803)
15. Botanical Society of Britain and Ireland
16. Flora of the Southeastern United States
17. The Little Flora of Slovenia (3rd ed.)
18. [Source](https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=18834)
19. A dataset on catalogue of alien plants in China
20. [Source](http://www.sabencia.net/nomenclator.php)
21. Dyntaxa
22. New Zealand Organisms Register
23. BDTFX v7.00
24. TAXREF v9.0
25. TAXREF v10.0
26. TAXREF v11.0
27. TAXREF v12.0
28. TAXREF v13.0
29. TAXREF v14.0
30. TAXREF v15.0
31. TAXREF v16.0
32. National Biodiversity Network
33. Nederlands Soortenregister
34. Plants of the World Online
35. Interim Register of Marine and Nonmarine Genera
36. [Portál informačního systému ochrany přírody](https://portal.nature.cz/redlist/v_nd_taxon_category.php)
37. FloraWeb
38. Info Flora
39. European Nature Information System
40. eBiodiversity
41. Indian Medicinal Plants Database
42. World Flora Online
43. Royal Horticultural Society Plant Database
44. Open Tree of Life reference taxonomy version 3.2
45. New York Flora Atlas
46. North Carolina Extension Gardener Plant Toolbox
47. Naturbasen
48. Plant Finder
49. FloraVeg.EU
50. Biota of New Zealand