You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection 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. 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 Place no data Remove constraint Place: no data Topic Ageratina Remove constraint Topic: Ageratina Topic Asterales Remove constraint Topic: Asterales Topic Plantae Remove constraint Topic: Plantae