Ontario aster
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Symphyotrichum
- species: Symphyotrichum ontarionis
Prospect
Connecticut- Clinton
Iowa- East Lansing
Michigan- Grenada
Mississippi- Hannibal
Missouri
United States
Beauharnois