USDA Forest Service Celebrating Wildflowers
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Critically Imperiled Plant Profile
(Not Listed or Proposed under the Endangered Species Act)

Petrophyton cinerascens, Chelan rockmat. Photo by Dana Visalli.

Chelan rockmat is a woody shrublet in the rose family, growing in rock crevices. Photo by Dana Visalli.

Petrophyton cinerascens, Chelan rockmat. Photo by John Gamon.

Petrophyton cinerascens range map.
Petrophyton cinerascens, Chelan rockmat
- Also known as: Petrophytum cinerascens
Threats
- Quarrying of rock is the most significant present threat
- Auto emissions, spray drift, and climate change are potential threats
- Limited to cliffs along the Columbia River in central Washington; all the known occurrences are within a strip of land seventeen miles long and less than a half mile wide
Conservation Status
National Forest and Grassland Occurrence
More Information
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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/petrophyton_cinerascens/index.shtml
Last modified: Wednesday, 13-Oct-2010 14:36:00 EDT