You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Superior Twp. University of Michigan Botanical Gardens, Dixboro Site. 4.5 miles northeast of Ann Arbor; just north of narrow, upland strip of elm woods that extends into hardwood plantings Remove constraint Place: Superior Twp. University of Michigan Botanical Gardens, Dixboro Site. 4.5 miles northeast of Ann Arbor; just north of narrow, upland strip of elm woods that extends into hardwood plantings Topic Asterales Remove constraint Topic: Asterales