Nelson's tansymustard
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Brassicales
- family: Brassicaceae
- genus: Descurainia
- species: Descurainia nelsonii
Whitehorse
Yukon
Canada
Burns- The Dalles
- Umatilla
Oregon- Dallesport
- Ellensburg
- Union Gap
Washington
United States