Matricaria occidentalis
Valley Mayweed
Also known as: Chamomilla occidentalis (Greene) Rydb. +1 more
- Chamomilla occidentalis (Greene) Rydb.
- Matricaria discoidea subsp. occidentalis (Greene) P.D.Sell
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Asteraceae
- WCVP Morphological Data: Recorded natively as a annual.
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Matricaria occidentalis (commonly known as Valley Mayweed) is an annual belonging to the Asteraceae family. Found natively in North America, this species is primarily associated with temperate conditions.
Macro Climate
Temperate
Plant Type
Annual
Native Range
Continents (WGSRPD)
NORTHERN AMERICA
Regions (WGSRPD)
Mexico, Northwestern U.S.A., Southwestern U.S.A.
Botanical Countries (WGSRPD L3)
California, Mexican Pacific Is., Mexico Northwest, Oregon
Introduced Range
An “Introduced” distribution indicates that the plant is recorded outside its native range in that region as a result of deliberate or accidental human introduction. Introduced records may include casual, naturalized or invasive populations, but do not include plants that are only cultivated or planted without self-sustaining populations.
Botanical Countries (Non-Native)
Ireland