# Polygonum arenastrum subsp. calcatum
**Wikidata**: [Q56313381](https://www.wikidata.org/wiki/Q56313381)  
**Source**: https://4ort.xyz/entity/polygonum-arenastrum-subsp-calcatum


## References

1. Global Biodiversity Information Facility
2. International Plant Names Index
3. Plants of the World Online
4. FloraWeb
5. World Flora Online