You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place City of Houghton, SW corner Isle Royale & Lake Streets. T55N, R34W, Sec. 36. Remove constraint Place: City of Houghton, SW corner Isle Royale & Lake Streets. T55N, R34W, Sec. 36. Place Houghton Remove constraint Place: Houghton Topic Asteraceae Remove constraint Topic: Asteraceae Topic Sonchus Remove constraint Topic: Sonchus