Dryopteridaceae
Mountain shield fern
Polystichum cystostegium
- Family
- Dryopteridaceae
- Genus
- Polystichum
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Common names
By language (1)
- English
- Mountain shield fern
Photos
Photo: Peter de Lange, CC0, from Wikimedia Commons 
Photo: P. J. de Lange, CC BY 4.0, from Wikimedia Commons 
Photo: P. J. de Lange, CC BY 4.0, from Wikimedia Commons 
Photo: P. J. de Lange, CC BY 4.0, from Wikimedia Commons 
Photo: P. J. de Lange, CC BY 4.0, from Wikimedia Commons 
Photo: P. J. de Lange, CC BY 4.0, from Wikimedia Commons 
Photo: Peter de Lange, CC0, from Wikimedia Commons 
Photo: Peter de Lange, CC0, from Wikimedia Commons
More in Polystichum
- Hard shield-fernPolystichum aculeatumDryopteridaceae
- Northern hollyfernPolystichum lonchitisDryopteridaceae
- Braun's hollyfernPolystichum brauniiDryopteridaceae
- Western swordfernPolystichum munitumDryopteridaceae
- Christmas fernPolystichum acrostichoidesDryopteridaceae
- Madeira shield-fernPolystichum drepanumDryopteridaceae
- Lemmon's hollyfernPolystichum lemmoniiDryopteridaceae
- Mountain hollyfernPolystichum scopulinumDryopteridaceae
- California swordfernPolystichum californicumDryopteridaceae
- Polystichum craspedosorumDryopteridaceae
- Dudley's swordfernPolystichum dudleyiDryopteridaceae
- Polystichum hancockiiDryopteridaceae
Sources: classification from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.