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 Mississippi Remove constraint Place: Mississippi Place North America Remove constraint Place: North America Place Washington Remove constraint Place: Washington Place Yazoo Natl. Wildlife Refuge, natural levee between Alligator Pond & Swann Lake Slough. Remove constraint Place: Yazoo Natl. Wildlife Refuge, natural levee between Alligator Pond & Swann Lake Slough. Topic Poales Remove constraint Topic: Poales