You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Gosfield South Tp, Lot 6, Con III, 3 km Northwest of Ruthven, "Ruthven Rocky Woods". Remove constraint Place: Gosfield South Tp, Lot 6, Con III, 3 km Northwest of Ruthven, "Ruthven Rocky Woods". Topic Carex Remove constraint Topic: Carex