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Park			Taxon Code
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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Spirodela polyrrhiza
common duckmeat, common duckweed, greater duckweed
Ozark National Scenic Riverways
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Rare

Scientific Name with Authority:		Spirodela polyrrhiza (L.) Schleid.
Park Preferred Common Name(s):
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Spermatophytina, Order Alismatales, Family Araceae, Genus Spirodela, Species Spirodela polyrrhiza


Management Tags:
Management Priority


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:
NatureServe State Rank:
Evidence:		0 Observations, 0 Vouchers, 1 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Alibates Flint Quarries National Monument	Apostle Islands National Lakeshore
Arkansas Post National Memorial	Buffalo National River
Cape Hatteras National Seashore	Cumberland Island National Seashore
Cuyahoga Valley National Park	Eleanor Roosevelt National Historic Site
George Washington Birthplace National Monument	George Washington Memorial Parkway
Grand Portage National Monument	Great Falls Park
Indiana Dunes National Park	Jean Lafitte National Historical Park and Preserve
Lake Meredith National Recreation Area	Mammoth Cave National Park
Martin Van Buren National Historic Site	Minute Man National Historical Park
Mississippi National River and Recreation Areas	Niobrara National Scenic River
Pipestone National Monument	Piscataway Park
Point Reyes National Seashore	Richmond National Battlefield Park
Saint Croix National Scenic Riverway	Saratoga National Historical Park
Shiloh National Military Park	Stones River National Battlefield


Last Modified Date:	4/12/2005

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/9/2025 2:58:54 PM

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	10/9/2025 2:58:54 PM

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