You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Locally common on sand banks, shore of Lake Superior, ca. 11.5 mi. WSW of Grand Marais. Remove constraint Place: Locally common on sand banks, shore of Lake Superior, ca. 11.5 mi. WSW of Grand Marais. Topic Polygonaceae Remove constraint Topic: Polygonaceae