threetooth ragwort
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Packera
- species: Packera tridenticulata
Cañon City- Denver
- Golden
- Limon
- Loveland
- Wheat Ridge
Colorado- Minden
Nebraska
United States