# Polypodium niponicum

> species of fern in the class Equisetopsida

**Wikidata**: [Q38239931](https://www.wikidata.org/wiki/Q38239931)  
**Source**: https://4ort.xyz/entity/polypodium-niponicum


## References

1. Taxonomy database of the U.S. National Center for Biotechnology Information
2. Global Biodiversity Information Facility
3. Tropicos
4. International Plant Names Index
5. Plants of the World Online
6. World Flora Online