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

NPSpecies - Park Species Profile


Ambrosia psilostachya
western ragweed
Devils Tower National Monument
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Unknown

Scientific Name with Authority:		Ambrosia psilostachya DC.
Park Preferred Common Name(s):		western ragweed
Park Synonyms:

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


Park Tags:
Common Species - Yes
Growth Form - Herb
Flower Color - Green or Inconspicuous


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5
NatureServe State Rank:		WY: S4
Evidence:		0 Observations, 2 Vouchers, 4 Data Store References, 2 External Links


Other Parks Where Species is Listed:
Agate Fossil Beds National Monument	Amistad National Recreation Area
Apostle Islands National Lakeshore	Badlands National Park
Bent's Old Fort National Historic Site	Big Bend National Park
Big Thicket National Preserve	Bighorn Canyon National Recreation Area
Buffalo National River	Cabrillo National Monument
Cape Cod National Seashore	Capulin Volcano National Monument
Carlsbad Caverns National Park	Casa Grande Ruins National Monument
Channel Islands National Park	Chickamauga and Chattanooga National Military Park
Chickasaw National Recreation Area	Chiricahua National Monument
Coronado National Memorial	El Morro National Monument
Fort Laramie National Historic Site	Fort Larned National Historic Site
Fort Union Trading Post National Historic Site	George Washington Carver National Monument
Glacier National Park	Glen Canyon National Recreation Area
Golden Spike National Historical Park	Grand Canyon National Park
Guadalupe Mountains National Park	Homestead National Historical Park
Hubbell Trading Post National Historic Site	Indiana Dunes National Park
Isle Royale National Park	Jean Lafitte National Historical Park and Preserve
Jewel Cave National Monument	Knife River Indian Villages National Historic Site
Lake Mead National Recreation Area	Lake Meredith National Recreation Area
Lake Roosevelt National Recreation Area	Lava Beds National Monument
Lyndon B. Johnson National Historical Park	Mesa Verde National Park
Mississippi National River and Recreation Areas	Missouri National Recreational River
Montezuma Castle National Monument	Mount Rushmore National Memorial
Natchez Trace Parkway	Niobrara National Scenic River
Padre Island National Seashore	Palo Alto Battlefield National Historical Park
Pictured Rocks National Lakeshore	Pipestone National Monument
Saguaro National Park	Saint Croix National Scenic Riverway
San Antonio Missions National Historical Park	Sand Creek Massacre National Historic Site
Santa Monica Mountains National Recreation Area	Scotts Bluff National Monument
Sleeping Bear Dunes National Lakeshore	Tallgrass Prairie National Preserve
Theodore Roosevelt National Park	Timpanogos Cave National Monument
Tonto National Monument	Tumacacori National Historical Park
Tuzigoot National Monument	Valles Caldera National Preserve
Voyageurs National Park	Walnut Canyon National Monument
Washita Battlefield National Historic Site	Whiskeytown National Recreation Area
Wind Cave National Park	Yellowstone National Park
Zion National Park


Last Modified Date:	5/14/2014

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/9/2025 12:30:51 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 12:30:51 PM

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