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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Polygonum achoreum
Leathery knotweed
Voyageurs National Park
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Unknown

Scientific Name with Authority:		Polygonum achoreum S.F. Blake
Park Preferred Common Name(s):		Leathery knotweed
Park Synonyms:

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


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5
NatureServe State Rank:		MN: SNR
Evidence:		0 Observations, 0 Vouchers, 4 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Apostle Islands National Lakeshore	Fort Union Trading Post National Historic Site
Glacier National Park	Grand Portage National Monument
Grand Teton National Park	Grant-Kohrs Ranch National Historic Site
Indiana Dunes National Park	Isle Royale National Park
Jewel Cave National Monument	Lake Clark National Park and Preserve
Mississippi National River and Recreation Areas	Missouri National Recreational River
Pictured Rocks National Lakeshore	Pipestone National Monument
Scotts Bluff National Monument	Theodore Roosevelt National Park
Yellowstone National Park


Last Modified Date:	4/21/2006

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/9/2025 11:25:48 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		10/9/2025 11:25:48 AM