DistributionRead full entry
Alpine sweetvetch is a circumpolar species . In North America, it is widely distributed throughout Alaska and Canada, and occurs in the northern part of the contiguous United States. It occurs in Glacier County in Montana, Albany and Weston counties in Wyoming, southwestern South Dakota, the upper peninsula of Michigan, Aroostook County in northern Maine, Orleans and Lamoilee counties in northern Vermont, Coos County in New Hampshire, and Warren County, Massachusetts [8,18,28,58,60,65,69]. A map of the states occupied by alpine sweetvetch is available through Plants Database.
The distribution of Hedysarum alpinum var. alpinum is not well described. Gillett and others  indicate that it occurs in Canada's Nunavut and Northwest Territories, and Thilenius  describes it on Alaska's Copper River Delta. This may not describe the entire range occupied by H. alpinum var. alpinum.