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

Horkelia hendersonii.
Horkelia hendersonii. Photo by Norman Jensen, Photo.grafica botanii.

Horkelia hendersonii range map.
Horkelia hendersonii range map.

Horkelia hendersonii, Henderson’s horkelia

Threats

  • High elevation mining.
  • Road construction and recreational activities.

Conservation Status

National Forest and Grassland Occurrence

More Information

Horkelia hendersonii.
Horkelia hendersonii. Photo by Norman Jensen, Photo.grafica botanii.

Horkelia hendersonii.
Horkelia hendersonii. Photo Tom Kaye, Institute for Applied Ecology.

Horkelia hendersonii.
Horkelia hendersonii. Photo Tom Kaye, Institute for Applied Ecology.

Horkelia hendersonii.
Horkelia hendersonii. Photo Tom Kaye, Institute for Applied Ecology.

Horkelia hendersonii.
Horkelia hendersonii. Photo Tom Kaye, Institute for Applied Ecology.

Horkelia hendersonii.
Henderson’s horkelia grows on Siskiyou Mountains crest at the border between California and Oregon, on rocky granitic soils. Photo Tom Kaye, Institute for Applied Ecology.