You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Along highway U.S. 31 and overflow pond of Muskegon River, north of Muskegon. Remove constraint Place: Along highway U.S. 31 and overflow pond of Muskegon River, north of Muskegon. Topic Utricularia Remove constraint Topic: Utricularia