You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Green Island near Troy [Coordinates are for River shore at the foot of Swan St.] Remove constraint Place: Green Island near Troy [Coordinates are for River shore at the foot of Swan St.] Place USA Remove constraint Place: USA Topic Helenium Remove constraint Topic: Helenium Topic Plantae Remove constraint Topic: Plantae