You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Tamarack Swamp. Near eastern edge of swamp just south of gas pipeline right of way, 115 degrees & .7 mile from center of Tamarack, Tamarack Quad. Leidy Twp. Remove constraint Place: Tamarack Swamp. Near eastern edge of swamp just south of gas pipeline right of way, 115 degrees & .7 mile from center of Tamarack, Tamarack Quad. Leidy Twp.