Matricaria occidentalis | |
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Matricaria occidentalis | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Matricaria |
Species: | M. occidentalis
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Binomial name | |
Matricaria occidentalis (Greene) Rydb.
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Synonyms[1][2] | |
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.
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.
Usually occurs in wetlands, but occasionally found in non wetlands. It is native to California and Oregon.[3]