USDA Forest Service Celebrating Wildflowers
Critically Imperiled Plant Profile
(Not Listed or Proposed under the Endangered Species Act)
The common name of this species refers to its silky-hairy calyx. Photo © 2009 Sierra Pacific Industries.
Silky cryptantha makes its home in the sands and gravels of creek beds in the northern Sacramento Valley. Photo © 2009 Sierra Pacific Industries.
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, silky cryptantha
- This species is threatened by gravel mining, off road vehicle use, and by grazing.
National Forest and Grassland Occurrence
Cryptantha crinita nutlet back. Photo courtesy of Michael G. Simpson, San Diego State University.
Cryptantha crinita nutlet ventral. Photo courtesy of Michael G. Simpson, San Diego State University.
U.S. Forest Service
1400 Independence Ave., SW, Mailstop Code: 1103
Washington DC 20250-1103
Last modified: Friday, 07-Jan-2011 10:39:50 EST