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 Ironto Shale Barrens, on Roanoke Road, 1 mi. E. of Ironto Remove constraint Place: Ironto Shale Barrens, on Roanoke Road, 1 mi. E. of Ironto