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

NPSpecies - Park Species Profile


Conyza canadensis var. canadensis
Canadian horseweed
American Memorial Park
			Record Status: Approved
Occurrence:	Present
Nativeness:	Non-native
Abundance:	Rare

Scientific Name with Authority:		Conyza canadensis var. canadensis (L.) Cronquist
Park Preferred Common Name(s):
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Spermatophytina, Order Asterales, Family Asteraceae, Genus Conyza, Species Conyza canadensis


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5T5
NatureServe State Rank:
Evidence:		0 Observations, 0 Vouchers, 1 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Assateague Island National Seashore	Bandelier National Monument
Big Thicket National Preserve	Blue Ridge Parkway
Cape Hatteras National Seashore	Cape Lookout National Seashore
Castillo De San Marcos National Monument	Chaco Culture National Historical Park
Cumberland Island National Seashore	Delaware Water Gap National Recreation Area
Fort Matanzas National Monument	Fredericksburg and Spotsylvania County Battlefields Memorial National Military Park
Gateway National Recreation Area	Gauley River National Recreation Area
Haleakala National Park	Hawaii Volcanoes National Park
Kings Mountain National Military Park	New River Gorge National Park and Preserve
Ninety Six National Historic Site	Niobrara National Scenic River
Petrified Forest National Park	Prince William Forest Park
Russell Cave National Monument	Saratoga National Historical Park
Stones River National Battlefield	Valles Caldera National Preserve


Last Modified Date:	9/17/2007

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 12/15/2025 7:34:14 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	12/15/2025 7:34:14 AM

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