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 Ackerman's [Ackerson] Lake Remove constraint Place: Ackerman's [Ackerson] Lake Topic Commelinales Remove constraint Topic: Commelinales Topic Pontederia Remove constraint Topic: Pontederia