You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place North America Remove constraint Place: North America Place Ontonagon Remove constraint Place: Ontonagon Place Ottawa National Forest, in gravelly, shallow soil on rock outcrop Remove constraint Place: Ottawa National Forest, in gravelly, shallow soil on rock outcrop Topic Dryopteris Remove constraint Topic: Dryopteris Topic Polypodiopsida Remove constraint Topic: Polypodiopsida Type still image Remove constraint Type: still image