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 ridge N. of Río Doña Juana, Toro Negro purchase unit, N. of Villalba Remove constraint Place: ridge N. of Río Doña Juana, Toro Negro purchase unit, N. of Villalba