You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Mexico Remove constraint Place: Mexico Place North America Remove constraint Place: North America Place Pilchapulhuacán; km 343, between Tamazunchale and Chapulhuacán Remove constraint Place: Pilchapulhuacán; km 343, between Tamazunchale and Chapulhuacán Place San Luis Potosí Remove constraint Place: San Luis Potosí Topic Plantae Remove constraint Topic: Plantae Topic Poaceae Remove constraint Topic: Poaceae