You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Durango Remove constraint Place: Durango Place Mexico Remove constraint Place: Mexico Place Peñón Blanco; Eastern piedmont of Sierra Gamon above Penon Blanco Remove constraint Place: Peñón Blanco; Eastern piedmont of Sierra Gamon above Penon Blanco Topic Poaceae Remove constraint Topic: Poaceae Type still image Remove constraint Type: still image