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Matricaria occidentalis
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Western Pineappleweed
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Matricaria occidentalis
  

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About Western Pineappleweed (Matricaria occidentalis) Western Pineappleweed (Chamomilla occidentalis) is a common native annual herb that grows in northern, southern and central California. It tends to grow in undisturbed or recently burned alkali flats, at elevations from 0-7900 feet.
Plant Description
Plant Type
Annual herb

Max. Height
1.5 ft (0.46 m)

Native Status
Native

Natural Setting
Site Type
Undisturbed alkali flats, vernal pools, edges of salt marshes

Sun
Sun

Elevation ?
-7' - 5709'

Annual Precip. ?
6.2" - 41.8"

Summer Precip. ?
0.14" - 1.50"

Coldest Month ?
31.5° F - 56.0° F

Hottest Month ?
58.8° F - 80.9° F

Humidity ?
0.45 vpd - 29.76 vpd

Drainage
Standing

Sunset Zones ?
5, 7*, 8*, 9*, 14*, 15*, 16*, 17*, 18*, 19*, 20*, 21*, 22*, 23*, 24*

Landscaping Information
Other Names
Botanical Names
Chamomilla occidentalis

Common Names
Valley Mayweed


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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