1. North American fern with evergreen fronds
   "evergreen wood fern remains green throughout winter";
   - marginal wood fern, leatherleaf wood fern, Dryopteris marginalis
    
2. North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds
   "evergreen wood fern remains green throughout the winter months";
   - Christmas fern, canker brake, dagger fern, Polystichum acrostichoides

Derived forms: evergreen wood ferns

Type of: fern, wood fern, woodfern, wood-fern

Part of: genus Polystichum, Polystichum