You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Jalisco Remove constraint Place: Jalisco Place Mexico Remove constraint Place: Mexico Place Vicinity of Paso de la Troje, road from Ojuelos to Aguascalientes. Near km. 39, 2 miles west of the pass Remove constraint Place: Vicinity of Paso de la Troje, road from Ojuelos to Aguascalientes. Near km. 39, 2 miles west of the pass Topic Ageratina Remove constraint Topic: Ageratina Topic Asteraceae Remove constraint Topic: Asteraceae Topic Plantae Remove constraint Topic: Plantae Type still image Remove constraint Type: still image