You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place About 5 mi. E. of Ciudad Guerrero on Rt. 16. Roadside near corn fields on hilltop. Remove constraint Place: About 5 mi. E. of Ciudad Guerrero on Rt. 16. Roadside near corn fields on hilltop. Place Guerrero Remove constraint Place: Guerrero Place North America Remove constraint Place: North America Topic Asteraceae Remove constraint Topic: Asteraceae