Matricaria occidentalis

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

Matricaria occidentalis
Matricaria occidentalis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Matricaria
Species:
M. occidentalis
Binomial name
Matricaria occidentalis
(Greene) Rydb.
Synonyms[1][2]

Chamomilla occidentalis Greene

Description

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The stem is either branching or below the corymbose summit. It is 15–45 cm (5.9–17.7 in) high; not strongly scented; heads as much as 1.5 cm (0.59 in) in diameter, conical in shape and greenish yellow in color; achenes are sharply angled. It is used as substitute for chamomile. It is extremely similar to pineapple weed.

Distribution and habitat

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Usually occurs in wetlands, but occasionally found in non wetlands. It is native to California and Oregon.[3]

References

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  1. ^ a b USDA, NRCS (n.d.). "​Matricaria occidentalis​". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. 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.{{cite web}}: CS1 maint: numeric names: authors list (link)
  3. ^ "Matricaria occidentalis in Flora of North America @ efloras.org". www.efloras.org.
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