You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Dunwich Township, Thames River Floodplain ANSI, 9.2 km NNW of Dutton Post Office. Remove constraint Place: Dunwich Township, Thames River Floodplain ANSI, 9.2 km NNW of Dutton Post Office. Topic Cyperaceae Remove constraint Topic: Cyperaceae