Skip to main content

U.S. Forest Service

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

Horkelia bolanderi. Horkelia bolanderi is known from a very few occurrences in Lake and Mendocino Counties, north-central California. It is extirpated (locally extinct) in nearby Colusa County. Photo courtesy of J.S. Peterson @ USDA-NRCS PLANTS Database.

Horkelia bolanderi range map. Horkelia bolanderi range map.

Horkelia bolanderi, Bolander’s horkelia


  • Vehicle activity and development are threats to this species.

Conservation Status

National Forest and Grassland Occurrence

More Information