Index / Search / Achnatherum occidentale
§1 Plant
Achnatherum occidentale (Thurb.) Barkworth
vernacular western needlegrass — species · Poaceae
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Perennial
- Group
- Monocot
- Family
- Poaceae Barnhart
- Genus
- Achnatherum
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
County-level range
· 100 counties across 7 states/territories§3Cultivation
No cultivation specs.
USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.
§4Counties, by state
Recorded in 100 counties across 7 states/territories.
California view state ↗ 33 N ▾
- Alpine 06003
- Amador 06005
- Butte 06007
- Calaveras 06009
- Colusa 06011
- El Dorado 06017
- Fresno 06019
- Glenn 06021
- Humboldt 06023
- Inyo 06027
- Kern 06029
- Lake 06033
- Lassen 06035
- Los Angeles 06037
- Madera 06039
- Mariposa 06043
- Modoc 06049
- Mono 06051
- Nevada 06057
- Placer 06061
- Plumas 06063
- Riverside 06065
- San Bernardino 06071
- San Diego 06073
- Santa Barbara 06083
- Shasta 06089
- Sierra 06091
- Siskiyou 06093
- Tehama 06103
- Trinity 06105
- Tulare 06107
- Tuolumne 06109
- Ventura 06111
Idaho view state ↗ 14 N ▾
Montana view state ↗ 2 N ▾
Nevada view state ↗ 10 N ▾
Oregon view state ↗ 18 N ▾
Washington view state ↗ 19 N ▾
Wyoming view state ↗ 4 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/ACOC3 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/9902722 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z