Cascade penstemon
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Lamiales
- family: Plantaginaceae
- genus: Penstemon
- species: Penstemon serrulatus
Bend- Cascade Locks
- Portland
- Salem
Oregon- Cle Elum
- Leavenworth
- Stevenson
Washington
United States