Christmas fern
- kingdom: Plantae
- phylum: Tracheophyta
- class: Polypodiopsida
- order: Polypodiales
- family: Dryopteridaceae
- genus: Polystichum
- species: Polystichum acrostichoides
Fredericton- Saint Andrews
New Brunswick
Canada
Bergshamra- Djursholm
Stockholm- Göteborg
Västra Götaland
Sweden
Culver City
California- Oak Hills Place
Louisiana- Annapolis
- Berwyn Heights
- Brookmont
- Cabin John
- Capitol Heights
- Chevy Chase
- Chevy Chase Village
- Chillum
- College Park
- Colmar Manor
- Cottage City
- Crownsville
- East Riverdale
- Fairmount Heights
- Four Corners
- Friendship Village
- Goddard
- Havre de Grace
- Kemp Mill
- Langley Park
- Lanham
- Mayo
- Naval Academy
- New Carrollton
- Perryville
- Riverdale Park
- Savage
- Seabrook
- Seat Pleasant
- Silver Spring
- Somerset
- Takoma Park
- Upper Marlboro
- White Oak
Maryland- Sharon
Massachusetts- East Lansing
- Haslett
Michigan- Warrensburg
Missouri- Hometown
Pennsylvania- Colchester
Vermont- Washington, D. C.
Washington, D.C.
United States