You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Crucero de Grutas (Grutas de Cacahuamilpa); cerca de las Grutas de Cacahuamilpa; alrededores de la salida del río Chontalcoatlán Remove constraint Place: Crucero de Grutas (Grutas de Cacahuamilpa); cerca de las Grutas de Cacahuamilpa; alrededores de la salida del río Chontalcoatlán Place Guerrero Remove constraint Place: Guerrero Place Mexico Remove constraint Place: Mexico Place North America Remove constraint Place: North America Topic Aristida Remove constraint Topic: Aristida Topic Plantae Remove constraint Topic: Plantae Topic Poaceae Remove constraint Topic: Poaceae Topic Poales Remove constraint Topic: Poales