Matricaria occidentalis

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Matricaria occidentalis
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Matricaria
M. occidentalis
Binomial name
Matricaria occidentalis
(Greene) Rydb.

Chamomilla occidentalis Greene

Matricaria occidentalis, commonly known as valley mayweed,[1] is an annual plant native to North America. It is in the family Asteraceae.


Stem either branching or below the corymbose summit, 15-45(70)cm high; not strongly scented; heads as much as 1.5 cm in diameter, conical in shape and greenish yellow in color; achenes sharply angled. Used as substitute for chamomile.


Usually occurs in wetlands, but occasionally found in non wetlands. It is native to California and Oregon.


  1. ^ a b "Matricaria occidentalis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 2016-11-09.
  2. ^ The Jepson Online Interchange for California Floristics − Jepson eFlora (TJM2) (2010). "Taxon: Matricaria occidentalis Greene". Taxonomy for Plants. University of California, Berkeley. Retrieved 2016-11-09.

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