You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Backbone State Park, Maquoketa River valley and adjacent bluffs, north of Dundee Remove constraint Place: Backbone State Park, Maquoketa River valley and adjacent bluffs, north of Dundee Place Iowa Remove constraint Place: Iowa Place North America Remove constraint Place: North America Topic Graphis Remove constraint Topic: Graphis Topic Lichens Remove constraint Topic: Lichens Type still image Remove constraint Type: still image