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 North America Remove constraint Place: North America Place Rensselaer Remove constraint Place: Rensselaer Place Troy, River Hudson [Coordinates are for the River shore at the 19th St. bridge.] Remove constraint Place: Troy, River Hudson [Coordinates are for the River shore at the 19th St. bridge.] Topic Potamogeton Remove constraint Topic: Potamogeton