Malheur Wire-lettuce

Stephanomeria malheurensis flowers Photo Credit: Oregon Department of Agriculture


  • Species Common Name Malheur Wire-lettuce
  • Species Scientific Name Stephanomeria malheurensis
  • Federal Listing Status Endangered
  • State Listing Status Endangered


Special needs

Malheur wire-lettuce is found in eastern Oregon sagebrush steppe. The species occurs on the tops of broad hills, above surrounding flats. Malheur wire-lettuce is often associated with volcanic tuff layered with thin crusts of limestone.

Limiting factors

Small population size puts Malheur wire-lettuce at risk of extirpation due to stochastic events. Competition from invasive plants, including cheatgrass, is an important threat. Herbivory and soil compaction by researchers may also be harmful to this species.

Conservation actions

This plant is only known to a single site on Bureau of Land Management-protected land. Identify suitable habitat for reintroduction, and establish additional populations. Continue to minimize mining activity near Malheur wire-lettuce. Continue banking seeds for future needs.

Key reference or plan

Oregon Department of Agriculture Plant Conservation