giant mountain aster
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Canadanthus
- species: Canadanthus modestus
Armstrong- Kimberley
- Ladner
- Nelson
- Prince George
British Columbia- Thunder Bay
Ontario- Chibougamau
Quebec
Canada
Aumsville- Enterprise
- Hood River
- Portland
Oregon
United States