You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Calcareous hills along the San Felipe River. This is probably in the vicinity of Del Rio, which used to be called San Felipe del Rio Remove constraint Place: Calcareous hills along the San Felipe River. This is probably in the vicinity of Del Rio, which used to be called San Felipe del Rio Topic Mortonia Remove constraint Topic: Mortonia