Elymus longifolius
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Poaceae
- genus: Elymus
- species: Elymus longifolius
Pachuca de Soto- Tlanalapa
Hidalgo- San Francisco Zacacalco
México- Pinos
Zacatecas
Mexico
Tucson
Arizona- Campo
- San Diego Country Estates
California- Mountain Home
Idaho- Aztec
New Mexico- Alpine
Texas- Toppenish
Washington
United States