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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Azolla filiculoides
American water fern, duckweed fern
Golden Gate National Recreation Area
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Uncommon

Scientific Name with Authority:		Azolla filiculoides Lam.
Park Preferred Common Name(s):		American water fern, duckweed fern
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Polypodiophytina, Subclass Polypodiidae, Order Salviniales, Family Salviniaceae, Genus Azolla, Species Azolla filiculoides


Park Tags:
Subunit - Giacomini


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5
NatureServe State Rank:		CA: SNR
Evidence:		1 Observations, 1 Vouchers, 3 Data Store References, 2 External Links


Other Parks Where Species is Listed:
Chesapeake and Ohio Canal National Historical Park	Kenilworth Park and Aquatic Gardens
Pinnacles National Park	Point Reyes National Seashore
Presidio of San Francisco	Redwood National Park
Santa Monica Mountains National Recreation Area	Sequoia and Kings Canyon National Parks


Last Modified Date:	8/6/2003

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 11/4/2025 5:43:34 AM

NatureServe Global Rank and State Rank

NatureServe. 2017. NatureServe Web Service. Arlington, VA. U.S.A. Available http://services.natureserve.org. Accessed: 12/4/2017. Updated quarterly.

This information is provided by NatureServe (www.natureserve.org) and its network of natural heritage member programs, a leading source of information about rare and endangered species, and threatened ecosystems.


		Species Profile		Page 1 of 1		11/4/2025 5:43:34 AM