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 Cienega at Almoloya del Rio (exact headwaters of Rio Lerma), SE of Toluca Remove constraint Place: Cienega at Almoloya del Rio (exact headwaters of Rio Lerma), SE of Toluca Place Mexico Remove constraint Place: Mexico Topic Araceae Remove constraint Topic: Araceae Topic Wolffiella Remove constraint Topic: Wolffiella