Wenatchee Mountains Checker-mallow

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The Wenatchee Mountains Checker-mallow (Sidalcea oregana var. calva) is a very rare flowering plant that only occurs in five locations in the Wenatchee Mountains of Chelan County, Washington, USA. The Camas Meadows Natural Area Preserve contains the largest known populations of two rare plant species, the Wenatchee Mountains checker-mallow and the Wenatchee larkspur (Delphinium viridescens).[1] Camas Meadows was preserved by the state of Washington for the checker-mallow and delphinium plants.[2] In addition to these two endangered plants, there are 135 species of wildflowers that bloom in the meadow.


  1. Department of Natural Resources, Southeast Region office at (509) 952-8510.
  2. Checker-mallow, Camas Meadows, March 18, 2007.

Further reading

  • USFWS. 1999. Determination of Endangered Status for Sidalcea oregana var. calva (Wenatchee Mountains Checker-Mallow). Federal Register. 64, 245: 71680-71687.
  • USFWS. 2001. Proposed Designation of Critical Habitat for Sidalcea oregana var. calva (Wenatchee Mountains checker-mallow). Federal Register. 66, 12: 4783-4794.