arrowleaf butterweed
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Senecio
- species: Senecio triangularis
Whitecourt
Alberta- West Vancouver
British Columbia
Canada
Seward
Alaska- Tahoma
California- Estes Park
- Hot Sulphur Springs
Colorado- Moscow
Idaho- Bend
- Brookings
- Harbor
- Lincoln City
- Port Orford
Oregon- Peaceful Valley
- Snoqualmie
- Yakima
Washington
United States