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Federally Listed, Proposed and Candidate Species
Fremont County Rockcress
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 Photo Credit: Bonnie Heidel, WYNDD |
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Potential Distribution in Wyoming by County
Counties where Fremont County Rockcress is known or believed to occur.
Fremont County
- For Species Lists, please use the IPaC System
Section 7 Range
If an action is proposed within the Section 7 Range, potnetial effects to the species and habitat should be considered. Project proponets are encouraged to contact the FWS Wyoming Ecological Servcies Office.
Download Section 7 Range GIS Data or Section 7 Range Google Earth layers
Species Information
Fremont County rockcress (Boechera pusilla)is a candidate for listing under the Act (76 FR 33924; June 9, 2011). This perennial herb has several long, slender stems that grow along the ground. Its small, light lavender, four-petaled flowers blossom from May to mid-June. Fremont County rockcress is endemic to sparsely vegetated, coarse, granitic soil pockets in exposed granite-pegmatite outcrops, with slopes generally less than 10 degrees. The only known population of Fremont County rockcress is located at 8,000–8,100 feet in elevation on lands administered by the Bureau of Land Management in the southern foothills of the Wind River Range. The primary threats to this species have not yet been fully identified. However, threats appear to be acting on the species as evidenced by a recent decline in population size. Threats to the species may be related to drought, disease, or other factors. The Service does not maintain a list of "qualified" surveyors, but can refer those wishing to become familiar with Fremont County rockcress to experts who can provide training or services.
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