# Betula pubescens subsp. tortuosa

> subspecies of plant

**Wikidata**: [Q24688358](https://www.wikidata.org/wiki/Q24688358)  
**Source**: https://4ort.xyz/entity/betula-pubescens-subsp-tortuosa


## 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. GRIN Taxonomy for Plants
6. Flora of North America
7. Database of Vascular Plants of Canada
8. United States Department of Agriculture Plants Database
9. UMLS 2023
10. National Biodiversity Network
11. World Checklist of Selected Plant Families
12. Plants of the World Online
13. European Nature Information System
14. World Flora Online
15. Open Tree of Life reference taxonomy version 3.6
16. Naturbasen