You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Walpole Island, Pottawatamie Prairie, near south end of Pottawatamie Rd. Remove constraint Place: Walpole Island, Pottawatamie Prairie, near south end of Pottawatamie Rd. Topic Poales Remove constraint Topic: Poales