You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place In Mixteca Alta, about eight miles south of Tlaxiaco, on summit of Cerro Yucuyacua Remove constraint Place: In Mixteca Alta, about eight miles south of Tlaxiaco, on summit of Cerro Yucuyacua Topic Pseudevernia Remove constraint Topic: Pseudevernia