You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Along US Rt 45, 10 miles south of its junction with Co Rd 20 on Four Points, 0.9 mile south of Co Rd 1 (road to Vinegar Bend). Remove constraint Place: Along US Rt 45, 10 miles south of its junction with Co Rd 20 on Four Points, 0.9 mile south of Co Rd 1 (road to Vinegar Bend).