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 Alpena Remove constraint Place: Alpena Place Near Leer, second sink of the "Three Sinks". Remove constraint Place: Near Leer, second sink of the "Three Sinks". Place North America Remove constraint Place: North America Topic Dryopteris Remove constraint Topic: Dryopteris Topic Polypodiopsida Remove constraint Topic: Polypodiopsida