grows there as an introduced plant.

In North America it is native to Alaska and almost every province of Canada, but has been introduced to the island of Newfoundland. In the United States the certain native range in the lower 48 is in two separated areas. In the west its range is in Washington, Oregon, Idaho, Montana, Wyoming, and Colorado. In the east it extends from Minnesota, eastward through Wisconsin, Michigan, Ohio, Pennsylvania, and New Jersey. Then northward into New York and