| 词条 | Matricaria occidentalis |
| 释义 |
|image = |image_caption = |taxon = Matricaria occidentalis |authority = (Greene) Rydb. |synonyms = Chamomilla occidentalis Greene |synonyms_ref = [1][2] }} Matricaria occidentalis, commonly known as valley mayweed,[1] is an annual plant native to North America. It is in the family Asteraceae. DescriptionStem 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. DistributionUsually occurs in wetlands, but occasionally found in non wetlands. It is native to California and Oregon. References1. ^1 {{PLANTS|taxon=Matricaria occidentalis|symbol=MAOC|accessdate=2016-11-09}} 2. ^{{Cite web|url=http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=4113|title=Taxon: Matricaria occidentalis Greene.| accessdate = 2016-11-09 | author = The Jepson Online Interchange for California Floristics − Jepson eFlora (TJM2) | authorlink = The Jepson Manual | date = 2010 | work = Taxonomy for Plants | publisher = University of California, Berkeley}} External links
6 : Anthemideae|Flora of the Northwestern United States|Flora of the Southwestern United States|Flora of the Sierra Nevada (U.S.)|Flora of California|Flora of Oregon |
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