You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Canada Remove constraint Place: Canada Place Dunwich Township, Knowles Wildlife Preserve, Dunwich Swamp, 4.5 km SW of Dutton Post Office Remove constraint Place: Dunwich Township, Knowles Wildlife Preserve, Dunwich Swamp, 4.5 km SW of Dutton Post Office Topic Plantae Remove constraint Topic: Plantae Topic Poales Remove constraint Topic: Poales Topic Schoenoplectus Remove constraint Topic: Schoenoplectus