# Viburnum opulus var. opulus
**Wikidata**: [Q67188730](https://www.wikidata.org/wiki/Q67188730)  
**Source**: https://4ort.xyz/entity/viburnum-opulus-var-opulus


## References

1. Integrated Taxonomic Information System
2. Global Biodiversity Information Facility
3. Tropicos
4. GRIN Taxonomy for Plants
5. Database of Vascular Plants of Canada
6. United States Department of Agriculture Plants Database
7. World Flora Online
8. Washington Flora Checklist
9. E-Flora BC
10. New York Flora Atlas
11. Virginia Tech Dendrology Factsheets
12. Maryland Plant Atlas
13. Indiana Plant Atlas