Aristida longiseta
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Poaceae
- genus: Aristida
- species: Aristida longiseta
Sabinas Hidalgo
Nuevo León
Mexico
Lewiston
Idaho- Bloomfield
New Mexico- Eagle Pass
Texas- Spokane
Washington- Pine Bluffs
Wyoming
United States
Kamloops