You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Isle Royale. Washington Island, Washington Harbor Remove constraint Place: Isle Royale. Washington Island, Washington Harbor Place Keweenaw Remove constraint Place: Keweenaw Place North America Remove constraint Place: North America Topic Equisetales Remove constraint Topic: Equisetales Topic Equisetum Remove constraint Topic: Equisetum Topic Polypodiopsida Remove constraint Topic: Polypodiopsida