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Orcutt's Spineflower
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Chorizanthe orcuttiana
  

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About Orcutt's Spineflower (Chorizanthe orcuttiana) Chorizanthe orcuttiana is a rare small annual plant in the buckwheat (Polygonaceae) family. Its common name is San Diego spineflower, and it is endemic to San Diego County, California. The plant is diminutive, and a hand-lens is necessary for proper identification. The plant is very sensitive to temperature and precipitation, and under drought or hot conditions the seeds will not germinate or survive. The plant is visible anywhere from February through July during good rain year, but most years the plant is only visible from April to June. Each minute flower yields one seed. This species is octoploid and probably arose through hybridization between other Chorizanthe, perhaps C. procumbens and C. polygonoides.
Plant Description
Plant Type
Annual herb

Native Status
Natural Setting
Elevation ?
7' - 468'

Annual Precip. ?
9.8" - 12.0"

Summer Precip. ?
0.21" - 0.31"

Coldest Month ?
52.8° F - 56.5° F

Hottest Month ?
69.0° F - 73.4° F

Humidity ?
1.92 vpd - 16.13 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available


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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