You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Palos Twp. Swallow Cliff Woods Forest Preserve, southwest of the jct of US Hwy 45 & State Hwy 83. Remove constraint Place: Palos Twp. Swallow Cliff Woods Forest Preserve, southwest of the jct of US Hwy 45 & State Hwy 83.