Mertens' rush
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Magnoliales
- family: Juncaceae
- genus: Juncus
- species: Juncus mertensianus
Breckenridge- Georgetown
Colorado- Frederickson
Washington
United States
Mertens' rush Breckenridge Georgetown Frederickson
Nelson