USDA Forest Service Celebrating Wildflowers

USDA Logo and Forest Service Shield

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

Umpqua mariposa lily.
Calochortus umpquaensis is only found along in the Umpqua River watershed of southwestern Oregon, and within this narrow range, it is restricted to serpentine-derived soils that are especially high in nickel, cadmium, magnesium, and phosphorus. Photo by Eric Baxter.

Umpqua mariposa lily flower.
Mariposa is the Spanish word for butterfly. You can see why this plant is called mariposa lily! Photo by Richard Helliwell.

Umpqua mariposa lily habitat.
Umpqua mariposa lily grows in forests and meadows, especially where the two habitats meet. Photo by Richard Helliwell.

Calochortus umpquaensis range map.
Calochortus umpquaensis range map.

Calochortus umpquaensis, Umpqua mariposa lily

Threats

  • Habitat is affected by grazing and mining

Conservation Status

National Forest and Grassland Occurrence

More Information

U.S. Forest Service
Rangeland Management
Botany Program

1400 Independence Ave., SW, Mailstop Code: 1103
Washington DC 20250-1103

USA.gov logo

Location: http://www.fs.fed.us/wildflowers/rareplants/profiles/critically_imperiled/calochortus_umpquaensis/index.shtml
Last modified: Wednesday, 13-Oct-2010 14:35:28 EDT