You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place at and just below summit of Cerro Alquitran, 17-18 km. by road west of Mex. hgihway 95 and Mazatlan Remove constraint Place: at and just below summit of Cerro Alquitran, 17-18 km. by road west of Mex. hgihway 95 and Mazatlan