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RangeOpuntia fragilis occurs from the Canadian provinces of Alberta and Ontario southward to the southwestern USA states. This species is the taxon of the farthest north occurrence of any member of the cactaceae family, having observations recorded as far north as 58 degrees northern latitude. Northern occurrences include the Peace River area of British Columbia eastward to western Manitoba and Ontario. USA occurrences include the state of Washington eastward to Minnesota and Wisconsin, and south to New Mexico, Arizona and California.