You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Grassy Island, Detroit River International Wildlife Refuge. Remove constraint Place: Grassy Island, Detroit River International Wildlife Refuge. Place North America Remove constraint Place: North America Place USA Remove constraint Place: USA Place Wayne Remove constraint Place: Wayne Topic Rosales Remove constraint Topic: Rosales Topic Ulmus Remove constraint Topic: Ulmus