You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place About 1 1/4 miles south west of the Rock Harbor Campgrounds along the trail which parallels the shore of Rock Harbor Remove constraint Place: About 1 1/4 miles south west of the Rock Harbor Campgrounds along the trail which parallels the shore of Rock Harbor Topic Usnea Remove constraint Topic: Usnea