You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Old railroad grade; T5N, R10E, sect. 27. Remove constraint Place: Old railroad grade; T5N, R10E, sect. 27. Topic Equisetaceae Remove constraint Topic: Equisetaceae Topic Equisetum Remove constraint Topic: Equisetum Topic Plantae Remove constraint Topic: Plantae Topic Polypodiopsida Remove constraint Topic: Polypodiopsida