You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Mexico Remove constraint Place: Mexico Place Vicinity of Paso de la Troje, road from Ojuelos to Aguascalientes Remove constraint Place: Vicinity of Paso de la Troje, road from Ojuelos to Aguascalientes Topic Asteraceae Remove constraint Topic: Asteraceae Topic Trixis Remove constraint Topic: Trixis Type still image Remove constraint Type: still image