[Wikipedia] Range, Habitat, Edibility: Claytonia megarhiza is native to western North America from northwestern Canada to New Mexico, where it grows in rock crevices and talus habitats in subalpine and alpine climates. The species is known from summits and slopes of North America's highest mountains including the Redstone Mountains of the Canadian Northwest Territories, disjunct south to the central and southern Rocky Mountains reaching a southern limit in the Sangre de Cristo Mountains.[4] In the Wenatchee Mountains of Washington State it is often found on serpentine.[5] Uses The rosettes of the leaves and the roots can be eaten as an emergency food.[7] (link added by Mary Ann Machi)