''Lewisia sacajaweana'' is a species of flowering plant in the family

Montiaceae Montiaceae are a family of flowering plants, comprising about 14 genera with about 230 known species, ranging from small herbaceous plants to shrubs. The family has a cosmopolitan distribution. The family Montiaceae was newly adopted in the APG ...

known by the common name Sacajawea's bitterroot. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Idaho Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyom ...

, where it is known from approximately two dozen sites, with about 75 percent of them in

Boise National Forest Boise National Forest is a National Forest covering of the U.S. state of Idaho. Created on July 1, 1908, from part of Sawtooth National Forest, it is managed by the U.S. Forest Service as five units: the Cascade, Emmett, Idaho City, Low ...

. It is usually found at elevations ranging from to above sea level and produces white flowers shortly after snowmelt. The species is named in honor of

Sacagawea Sacagawea ( or ; also spelled Sakakawea or Sacajawea; May – December 20, 1812 or April 9, 1884)Sacagawea
...

, Native American guide to the

Lewis and Clark Expedition The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select gro ...

. It is part of a genus named for Meriwether Lewis of the same expedition.

References

sacajaweana Flora of Idaho Endemic flora of the United States {{Caryophyllales-stub