# Ptisana fraxinea var. robusta

> variety of plant

**Wikidata**: [Q42711161](https://www.wikidata.org/wiki/Q42711161)  
**Source**: https://4ort.xyz/entity/ptisana-fraxinea-var-robusta


## References

1. A Taxonomic Revision of the Eusporangiate Fern Family Marattiaceae, with Description of a New Genus Ptisana
2. Global Biodiversity Information Facility
3. International Plant Names Index
4. African Plant Database
5. Plants of the World Online
6. World Flora Online