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 Opposite Echo Island, ca. 1½ mi. SW of Cedarville, on Les Cheneaux Channel, Lake Huron. Remove constraint Place: Opposite Echo Island, ca. 1½ mi. SW of Cedarville, on Les Cheneaux Channel, Lake Huron.