USDA Forest Service Celebrating Wildflowers
Critically Imperiled Plant Profile
(Not Listed or Proposed under the Endangered Species Act)
Recent phylogenetic analysis that tiny-flowered P. cookei is sister to P. suaveolens ssp. keckii, another extremely rare phacelia, which is restricted to the Cleveland National Forests in Orange and Riverside Counties, southern California. This photo shows Cooke’s phacelia in full flower! Photo by Kim Earll.
Cooke’s phacelia grows only in a small area of far northern California: at the northern base of Mt. Shasta, a volcano in the southern Cascade Range; it is limited to areas of high disturbance on ashy, volcanic sand, in and along unpaved roads where there is low surface organic matter and little competition from other plants. Photo by Kim Earll.
Phacelia cookei range map.
Phacelia cookei, Cooke’s phacelia
- Non-native plants, especially cheatgrass (Bromus tectorum).
- Road maintenance.
- Possibly fire suppression.
National Forest and Grassland Occurrence
U.S. Forest Service
1400 Independence Ave., SW, Mailstop Code: 1103
Washington DC 20250-1103
Last modified: Wednesday, 13-Oct-2010 14:36:01 EDT