Plants › shieldfern family
hard shield fern
Polystichum aculeatum
25 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
soft shield fernPolystichum setiferum
northern holly fernPolystichum lonchitis
Braun's holly fernPolystichum braunii
male fernDryopteris filix-mas
lady fernAthyrium filix-femina
deer fernStruthiopteris spicant
western sword fernPolystichum munitum
Japanese tassel fernPolystichum polyblepharon
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 17,386 |
|---|---|
| Alaska | 17,368 |
| Austria | 1,067 |
| Germany | 622 |
| France | 435 |
| United Kingdom | 412 |
| Italy | 359 |
| Switzerland | 339 |
| England | 332 |
| Bayern | 323 |
Counts show where people looked, not only where it lives.
Traits
Group and habits
- Medicinal useListed as having medicinal use by a harvested source. This is not medical advice.Kew World Checklist of Useful Plant Species
Edibility, toxicity and medicinal traits are records from datasets, not advice. Never eat, handle or use a wild species on the strength of an app.
Classification
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | Vascular Plants · Tracheophyta |
| Class | Ferns · Polypodiopsida |
| Order | Polypodiales |
| Family | shieldfern family · Dryopteridaceae |
| Genus | shield ferns · Polystichum |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- Traits: Kew World Checklist of Useful Plant Species (CC BY 4.0)
- How much to rely on each source
Remember the name next time.
Practise hard shield fern with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.