The BPS was established in 1891, and since that time has formed close relationships worldwide with many like minded individuals and organisations: 

Fern Societies

Africa

Fern Society of Southern Africa - https://fernsociety.co.za/wp/

Americas

American Fern Society - https://www.amerfernsoc.org/

The Delaware Valley Fern and Wildflower Society - http://www.dvfws.org/

Hardy Fern Foundation - https://hardyferns.org/

Los Angeles International Fern Society - https://laifs.org/

San Diego Fern Society - http://www.sandiegofernsociety.com/

San Francisco Fern Society - https://www.facebook.com/sffernsociety/

Texas Gulf Coast Fern Society - http://www.tgcfernsoc.org/fern.html

Asia

Indian Fern Society - https://indianfernjournal.com/indian-fern-society/

Taiwan Pteridophyte Research Group - https://www.twfern.org/

Australasia

Fern Society of South Australia - https://www.fernsocietyofsouthaustralia.org/

Western Australian Fern Society - https://wafernsociety.com.au/

Ferns Society of Victoria (archive - group disconitnued) https://www.aboutferns.org/default.aspx?hid=2361

New Zealand Plant Conservation Network - https://www.nzpcn.org.nz/conservation/botanic-societies/

Europe

Dutch Fern Association (Nederlandse Varen Vereniging) - https://www.varenvereniging.nl/

Exotic Fern Group - https://www.exoticferngroup.org/

Fern Friends of Switzerland - https://farnfreunde.ch/

Other Useful websites

Ferns and Lycophytes of the World - http://www.fernsoftheworld.com/

Flora North America - https://floranorthamerica.org/Main_Page

Index to Ferns and Lycophytes of Japan - https://jpfern.la.coocan.jp/names/

last checked 13/03/2026 dgh

https://www.fernsocietyofsouthaustralia.org/