You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Houghton Remove constraint Place: Houghton Place Near Chassell, Pike Bay at Centennial Park. Remove constraint Place: Near Chassell, Pike Bay at Centennial Park. Topic Haloragaceae Remove constraint Topic: Haloragaceae Topic Myriophyllum Remove constraint Topic: Myriophyllum