You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Language UND Remove constraint Language: UND Place Isle Royale. Washington Island, Washington Harbor Remove constraint Place: Isle Royale. Washington Island, Washington Harbor Place Keweenaw Remove constraint Place: Keweenaw Topic Equisetum Remove constraint Topic: Equisetum Topic Polypodiopsida Remove constraint Topic: Polypodiopsida