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Camissonia benitensis
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San Benito Evening-primrose
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Camissonia benitensis
  

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About San Benito Evening-primrose (Camissonia benitensis) Camissonia benitensis is a species of evening primrose known by the common name San Benito evening primrose. It is endemic to California, where its range includes far southern San Benito County, far western Fresno County, and far eastern Monterey County. The species is categorized as a strict serpentine endemic, meaning that it is always found growing on serpentine soils; however, at least four populations of the species are known to occur on shale substrates. Serpentine is an ultramafic rock. It weathers to produce soils with characteristically low levels of nutrients like nitrogen, phosphorus, potassium, and calcium, and high levels of magnesium and heavy metals including nickel and chromium. A major, consistent chemical feature of serpentine soil is a bioavailable calcium:magnesium ratio much less than 1.
Plant Description
Plant Type
Annual herb

Max. Height
1.2 - 7.9 in (3 - 20.1 cm)

Native Status
Natural Setting
Elevation ?
2376' - 4692'

Annual Precip. ?
16.7" - 23.6"

Summer Precip. ?
0.30" - 0.69"

Coldest Month ?
43.3° F - 49.1° F

Hottest Month ?
65.2° F - 72.8° F

Humidity ?
3.11 vpd - 22.70 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
San Benito Suncup, San Benito Evening Primrose


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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