Howell’s Mariposa Lily

Photo Credit: Oregon Department of Agriculture


  • Species Common Name Howell's Mariposa Lily
  • Species Scientific Name Calochortus howellii
  • Federal Listing Status Species of Concern
  • State Listing Status Threatened


Special needs

Howell's mariposa lily occurs on serpentine outcrops at lower to middle elevations. This species may be more common on brush-covered slopes or in scattered woods.

Limiting factors

Mining, horticultural collecting, and grazing are among threats to this species.

Conservation actions

Manage grazing in occupied areas. Minimize impacts from mining.

Key reference or plan

Oregon Department of Agriculture Plant Conservation