You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place University of Michigan Botanical Gardens, Dixboro Site, 4.5 mi. northeast of Ann Arbor, at north end of property Remove constraint Place: University of Michigan Botanical Gardens, Dixboro Site, 4.5 mi. northeast of Ann Arbor, at north end of property Place Washtenaw Remove constraint Place: Washtenaw Topic Equisetaceae Remove constraint Topic: Equisetaceae Topic Equisetum Remove constraint Topic: Equisetum Topic Polypodiopsida Remove constraint Topic: Polypodiopsida