Nomenclature: wfo-0001232375
![Georg Franz Hoffmann (1760-1826) Georg Franz Hoffmann (1760-1826)](http://commons.wikimedia.org/wiki/Special:FilePath/Georg%20Franz%20Hoffmann%201793.png)
![Johann Jacob Roemer (1763-1819) Johann Jacob Roemer (1763-1819)](http://commons.wikimedia.org/wiki/Special:FilePath/J.J.%20Roemer%2C%20director%20of%20the%20botanic%20garden%20at%20Zurich.%20Engra%20Wellcome%20V0005057.jpg)
![Paul Usteri (1768-1831) Paul Usteri (1768-1831)](http://commons.wikimedia.org/wiki/Special:FilePath/Paul%20Usteril.jpg)
Polypodium fragile var. angustatum Bot. Mag. (Römer & Usteri) 9: 11 (1790)
Nomenclatural References
- literature : Bot. Mag. (Römer & Usteri) 9: 11, f.14d. 1790 BHL link from IPNI metadata.
- person : Georg Franz Hoffmann (1760-1826) Based on occurrence of standard abbreviation 'Hoffm.' in the authors string.
- person : Johann Jacob Roemer (1763-1819) Based on occurrence of standard abbreviation 'Roem.' in the authors string.
- person : Paul Usteri (1768-1831) Based on occurrence of standard abbreviation 'Usteri' in the authors string.
- database : IPNI record: 206966-2
- database : The Plant List version 1.0, record: tro-50070788
- database : The Plant List version 1.1, record: tro-50070788
Taxonomy: Synonym in 2019-03
Occurs in: 2018-07 : 2019-03 : 2019-05 : 2021-12 : 2022-06 : 2022-12 : 2023-06 : 2023-12 : 2024-06Accepted name is: Cystopteris fragilis
Placement
- Cystopteris
- Cystopteris fragilis
- syn: Cystopteris fragilis