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

NPSpecies - Park Species Profile


Polygonum hydropiper
marshpepper smartweed
Lewis and Clark National Historical Park
			Record Status: Approved
Occurrence:	Present
Nativeness:	Non-native
Abundance:	Uncommon

Scientific Name with Authority:		Polygonum hydropiper L.
Park Preferred Common Name(s):		marshpepper smartweed
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Spermatophytina, Order Caryophyllales, Family Polygonaceae, Genus Persicaria, Species Polygonum hydropiper


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:
NatureServe State Rank:
Evidence:		0 Observations, 2 Vouchers, 1 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Allegheny Portage Railroad National Historic Site	Antietam National Battlefield
Apostle Islands National Lakeshore	Blue Ridge Parkway
Bluestone National Scenic River	Boston Harbor Islands National Recreation Area
Cape Cod National Seashore	Cape Hatteras National Seashore
Chickamauga and Chattanooga National Military Park	Chickasaw National Recreation Area
Cuyahoga Valley National Park	Delaware Water Gap National Recreation Area
Ebey's Landing National Historical Reserve	Eisenhower National Historic Site
Friendship Hill National Historic Site	Gateway National Recreation Area
George Washington Birthplace National Monument	George Washington Carver National Monument
Gettysburg National Military Park	Grand Portage National Monument
Hopewell Furnace National Historic Site	Indiana Dunes National Park
John Day Fossil Beds National Monument	Kenilworth Park and Aquatic Gardens
Lake Roosevelt National Recreation Area	Mammoth Cave National Park
Marsh-Billings-Rockefeller National Historical Park	Mississippi National River and Recreation Areas
Moores Creek National Battlefield	Mount Rainier National Park
New River Gorge National Park and Preserve	North Cascades National Park
Olympic National Park	Ozark National Scenic Riverways
Pictured Rocks National Lakeshore	Pipestone National Monument
Saint Croix National Scenic Riverway	Sleeping Bear Dunes National Lakeshore
Upper Delaware Scenic and Recreational River	Valley Forge National Historical Park
Voyageurs National Park	Wolf Trap National Park for the Performing Arts
Yosemite National Park


Last Modified Date:	10/4/2005

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 3/26/2026 4:46:47 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	3/26/2026 4:46:47 PM

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