Index / Search / Matricaria occidentalis
§1 Plant
Matricaria occidentalis Greene
vernacular valley mayweed — species · Asteraceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Annual
- Group
- Dicot
- Family
- Asteraceae Bercht. & J. Presl
- Genus
- Matricaria
Native status, by region
- L48 Lower 48 States Native
County-level range
· 23 counties across 2 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 23 counties across 2 states/territories.
California view state ↗ 21 N ▾
- Alameda 06001
- Butte 06007
- Contra Costa 06013
- Fresno 06019
- Glenn 06021
- Humboldt 06023
- Inyo 06027
- Kern 06029
- Kings 06031
- Lake 06033
- Lassen 06035
- Los Angeles 06037
- Marin 06041
- Merced 06047
- Orange 06059
- San Benito 06069
- San Bernardino 06071
- San Francisco 06075
- San Luis Obispo 06079
- Solano 06095
- Sonoma 06097
Oregon view state ↗ 2 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/MAOC ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3103758 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z