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 Along the Toba Trail north of the Asahan River between Toetoepan an Si Makkoek Remove constraint Place: Along the Toba Trail north of the Asahan River between Toetoepan an Si Makkoek