Topic
- Equisetum420
- Gymnocarpium52
- Homalosorus17
- Matteuccia35
- Onoclea36
- Onocleaceae71
- Ophioglossaceae548
- Ophioglossales548
- Ophioglossum16
- Osmunda30
- Osmundaceae117
- Osmundales117
- Osmundastrum42
- Pellaea7
- Phegopteris47
- Plantae2,313
- Polypodiaceae36
- Polypodiales1,227
- Polypodiopsida[remove]2,313
- Polypodium36