NPSpecies Report Viewer

Park			Taxon Code
Show Comments?

Find

National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Polygonum pensylvanicum
Pennsylvania knotweed, Pennsylvania smartweed, pinkweed, pinweed
Pictured Rocks National Lakeshore
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Unknown

Scientific Name with Authority:		Polygonum pensylvanicum L.
Park Preferred Common Name(s):
Park Synonyms:

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


Park Tags:
ParkTag -


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	Allegheny Portage Railroad National Historic Site
Antietam National Battlefield	Apostle Islands National Lakeshore
Assateague Island National Seashore	Aztec Ruins National Monument
Bent's Old Fort National Historic Site	Big Bend National Park
Blue Ridge Parkway	Bluestone National Scenic River
Boston Harbor Islands National Recreation Area	Cape Cod National Seashore
Cape Hatteras National Seashore	Chattahoochee River National Recreation Area
Chickamauga and Chattanooga National Military Park	Colonial National Historical Park
Congaree National Park	Cumberland Gap National Historical Park
Cuyahoga Valley National Park	Delaware Water Gap National Recreation Area
Effigy Mounds National Monument	Eisenhower National Historic Site
Fort Donelson National Battlefield	Fort Union Trading Post National Historic Site
Fredericksburg and Spotsylvania County Battlefields Memorial National Military Park	Gateway National Recreation Area
George Washington Birthplace National Monument	George Washington Carver National Monument
Gettysburg National Military Park	Great Sand Dunes National Park and Preserve
Harpers Ferry National Historical Park	Herbert Hoover National Historic Site
Homestead National Historical Park	Hopewell Culture National Historical Park
Hopewell Furnace National Historic Site	Indiana Dunes National Park
Johnstown Flood National Memorial	Kenilworth Park and Aquatic Gardens
Kennesaw Mountain National Battlefield Park	Kings Mountain National Military Park
Lake Meredith National Recreation Area	Little River Canyon National Preserve
Mammoth Cave National Park	Manassas National Battlefield Park
Martin Van Buren National Historic Site	Minute Man National Historical Park
Mississippi National River and Recreation Areas	Missouri National Recreational River
Monocacy National Battlefield	Moores Creek National Battlefield
Morristown National Historical Park	New River Gorge National Park and Preserve
Obed Wild and Scenic River	Ozark National Scenic Riverways
Petrified Forest National Park	Pipestone National Monument
Prince William Forest Park	Richmond National Battlefield Park
Russell Cave National Monument	Saint Croix National Scenic Riverway
Saint-Gaudens National Historical Park	Saratoga National Historical Park
Shiloh National Military Park	Sleeping Bear Dunes National Lakeshore
Stones River National Battlefield	Tallgrass Prairie National Preserve
Theodore Roosevelt National Park	Upper Delaware Scenic and Recreational River
Valley Forge National Historical Park	Vicksburg National Military Park
Voyageurs National Park	Wilson's Creek National Battlefield


Last Modified Date:	1/14/2005

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/13/2025 11:58:30 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	10/13/2025 11:58:30 PM

Report Viewer Configuration Error