Home
Checklist
Sites
Blog
Explore
Maryland Quad Map
Maryland Species Richness Map
Top 100 Contributors by Species
Top 100 Contributors by Records
Recent Discoveries (this month)
MBP Data Processing Stats
Recently Added Photos List
More
About
MBP Brochure
Dedication
Editors
Community
Partners
Resources
Bibliography
iNaturalist Integration Summary
Maryland Plant Atlas
MD/DCRC Resources
eBird
Connect With MBP
Facebook
Instagram
Twitter (X)
Bluesky
LinkedIn
MBP iNaturalist Project
Flickr MBP Group
MBP Google Group
Help
About Records
FAQ
MBP iNaturalist FAQs
How to Contribute
Contact
Donate
Christmas Fern
Polystichum
acrostichoides
(Michaux) Schott
Copy link
Christmas Fern: https://marylandbiodiversity.com/species/414
Synonyms
Tags
Kingdom Plantae
Division Pteridophyta
Class Polypodiopsida
Order Polypodiales
Family Dryopteridaceae
Genus Polystichum
View Taxonomy
Kingdom Plantae
Division Pteridophyta
Class Polypodiopsida
Order Polypodiales
Family Dryopteridaceae
Genus Polystichum
Seasonality
About Taxon
Thumbnails
Maps
Seasonality
Seasonality
History
Time of the year
Entire Year (Jan - Dec)
Spring (Mar - May)
Summer (Jun - Jul)
Fall (Aug - Nov)
Winter (Dec - Feb)
Range of years
1879
1890
1894
1895
1896
1899
1902
1904
1910
1912
1913
1918
1925
1926
1932
1937
1941
1946
1948
1960
1963
1964
1974
1976
1977
1978
1979
1980
1981
1983
1984
1987
1989
1990
1991
1994
1995
1996
1997
2000
2002
2003
2004
2005
2006
2007
2008
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2008
2007
2006
2005
2004
2003
2002
2000
1997
1996
1995
1994
1991
1990
1989
1987
1984
1983
1981
1980
1979
1978
1977
1976
1974
1964
1963
1960
1948
1946
1941
1937
1932
1926
1925
1918
1913
1912
1910
1904
1902
1899
1896
1895
1894
1890
1879
Filter by Tag
- - -
Flowers
No Flowers or Fruits
Sori
Breaking Leaf Buds
Green Leaves
Update
Reset
Total
Records
by Month
for Jan - Dec from 2019 - 2020
Source: Maryland Biodiversity Project database
Total
Records
by Year
Source: Maryland Biodiversity Project database