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
Plants flagged as 'Introduced' have been transported outside their native historical range by human activity. While many are common ornamentals, some may become naturalized or invasive in local environments. Local ecological guidelines require verification prior to planting.
Botanical Countries (Non-Native)
Ireland