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© Robert H. Mohlenbrock. USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. Courtesy of USDA NRCS Wetland Science Institute. (PD)
© (c) Scott Ward, some rights reserved (CC BY)
© (c) Ryan Sorrells, some rights reserved (CC BY)
© (c) naturalist charlie, some rights reserved (CC BY)
© no rights reserved
