You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Hwy 40, 4.7 km NW of Chatham City limits, Dover Tp (at border of Chatham Tp). Remove constraint Place: Hwy 40, 4.7 km NW of Chatham City limits, Dover Tp (at border of Chatham Tp).