USDA Forest Service Celebrating Wildflowers

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Critically Imperiled Plant Profile
(Not Listed or Proposed under the Endangered Species Act)

Cryptantha crinita.
The common name of this species refers to its silky-hairy calyx. Photo © 2009 Sierra Pacific Industries.

Silky cryptantha habitat.
Silky cryptantha makes its home in the sands and gravels of creek beds in the northern Sacramento Valley. Photo © 2009 Sierra Pacific Industries.

Foothill grassland.
Silky cryptantha has also been found in the foothill grasslands of eastern Tehama and southeastern Shasta counties at elevations up to 1200 m (3937 ft) in dry, stony, volcanic soils with little competing vegetation. Indeed, these upland populations may have been the seed source for the Sacramento valley occurrences. Photo by Don Lepley.

Cryptantha crinita range map.
Cryptantha crinita range map.

Cryptantha crinita, silky cryptantha

Threats

  • This species is threatened by gravel mining, off road vehicle use, and by grazing.

Conservation Status

National Forest and Grassland Occurrence

More Information

Additional Photos

Cryptantha crinita nutlet back side.
Cryptantha crinita nutlet back. Photo courtesy of Michael G. Simpson, San Diego State University.

Cryptantha crinita nutlet ventral side.
Cryptantha crinita nutlet ventral. Photo courtesy of Michael G. Simpson, San Diego State University.

U.S. Forest Service
Rangeland Management
Botany Program
1400 Independence Ave., SW, Mailstop Code: 1103
Washington DC 20250-1103

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Location: http://www.fs.fed.us/wildflowers/rareplants/profiles/critically_imperiled/cryptantha_crinita/index.shtml
Last modified: Friday, 07-Jan-2011 10:39:50 EST