Wyeth biscuitroot
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Apiales
- family: Apiaceae
- genus: Lomatium
- species: Lomatium ambiguum
Lewiston
Idaho- Umatilla
Oregon- Bridgeport
- Cashmere
- Leavenworth
- Okanogan
- Omak
- Pullman
- Spokane
Washington
United States