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

Thelesperma caespitosum, Green River greenthread
Thelesperma caespitosum, Green River greenthread. Photo by Sherel Goodrich.

Thelesperma caespitosum, Green River greenthread
The genus Thelesperma is distinguished by the two very different series of involucre bracts below each head of flowers. Photo by Sherel Goodrich.

Thelesperma caespitosum, Green River greenthread habitat
Green River greenthread grows on white shale of the Green River Formation, northeastern Utah and adjacent Wyoming. Photo by Sherel Goodrich.

Thelesperma caespitosum, Green River greenthread range map.
Thelesperma caespitosum range map.

Thelesperma caespitosum, Green River greenthread

  • Also known as: Thelesperma pubescens var. caespitosum

Threats

  • Threatened by impacts from off-road vehicles
  • Future threats from oil drilling

Conservation Status

National Forest and Grassland Occurrence

More Information