# Polypodiophytina

> subphylum of plants

**Wikidata**: [Q21446559](https://www.wikidata.org/wiki/Q21446559)  
**Source**: https://4ort.xyz/entity/polypodiophytina


## References

1. A checklist of familial and suprafamilial names for extant vascular plants
2. Reveal System of Classification
3. Integrated Taxonomic Information System
4. Tropicos
5. Open Tree of Life reference taxonomy version 3.2