You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place along path on N. shore of Au Sable Riv. 300 ft. W. of Rea Rd. Bridge W. of Oscoda. Oscoda Twp. Remove constraint Place: along path on N. shore of Au Sable Riv. 300 ft. W. of Rea Rd. Bridge W. of Oscoda. Oscoda Twp. Topic Schizachne Remove constraint Topic: Schizachne