You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Mackinac Island, Crooked Tree Drive Remove constraint Place: Mackinac Island, Crooked Tree Drive Place Michigan Remove constraint Place: Michigan Topic Hypogymnia Remove constraint Topic: Hypogymnia Topic Lichens Remove constraint Topic: Lichens