You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Mackinaw Twp. Ca. 2½ mi. S. of Mackinaw City. Remove constraint Place: Mackinaw Twp. Ca. 2½ mi. S. of Mackinaw City. Topic Cannabaceae Remove constraint Topic: Cannabaceae Topic Humulus Remove constraint Topic: Humulus Type still image Remove constraint Type: still image