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 
| |
| 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
editThe 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
editUsually occurs in wetlands, but occasionally found in non wetlands. It is native to California and Oregon.[3]
References
edit- ^ 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.
- ^ 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) - ^ "Matricaria occidentalis in Flora of North America @ efloras.org". www.efloras.org.