You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Michigan Remove constraint Place: Michigan Place North America Remove constraint Place: North America Place Summer Island, above Lake Michigan Remove constraint Place: Summer Island, above Lake Michigan Topic Pellaea Remove constraint Topic: Pellaea Topic Polypodiopsida Remove constraint Topic: Polypodiopsida Topic Pteridaceae Remove constraint Topic: Pteridaceae