Thesis: Aquatic vascular plant communities of Illinois. 1970. M.S.-- Eastern Illinois University, 1970 Under the general direction of the Chief of the Division of Natural Heritage, and in coordination with the IDNR’s Aquatic and Terrestrial Nuisance Species Task Force and the Illinois Invasive Plant Species Council, Ben serves as a technical specialist in developing, evaluating, and implementing exotic plant species exclusion and control projects for the Office of Resource Conservation at the Illinois Department of Natural Resources Division of Natural Heritage.
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Zannichellia palustris L.