roadside thistle
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Cirsium
- species: Cirsium altissimum
- Auburn
Alabama- Hot Springs
- Hot Springs National Park
Arkansas- Blue Ridge
Georgia- Culver
- Kendallville
- Kokomo
- Lafayette
- Wabash
Indiana- Ames
- Arnolds Park
Iowa- Burlington
- Emporia
- Wathena
Kansas- Cabin John
Maryland- Port Gibson
Mississippi- Fremont
- Grand Island
- Hastings
- Lincoln
Nebraska- North Wildwood
- Wildwood
New Jersey- East Hampton
- East Hampton North
- New Rochelle
New York- Delaware
- Painesville
- West Hill
Ohio- Bala Cynwyd
- Mercersburg
- Millersville
- Sharon
- Sharpsville
Pennsylvania- Houston
- Lake Worth
Texas- Bedford
Virginia- Washington, D. C.
Washington, D.C.- Allouez
- Lake Geneva
Wisconsin
United States