You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Keweenaw Remove constraint Place: Keweenaw Place North America Remove constraint Place: North America Place Passage Island, at end of boat-house cove, Isle Royale National Park Remove constraint Place: Passage Island, at end of boat-house cove, Isle Royale National Park Topic Botrychium Remove constraint Topic: Botrychium