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Jennifer Anderson. United States, Iowa, Scott Co., Davenport, Nahant Marsh.
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Provided by USDA Forest Service.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory. United States, Mississippi.
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Patrick J. Alexander.
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Patrick J. Alexander.
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W.D. Brush. Provided by National Agricultural Library. United States, Maryland.
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W.D. Brush. Provided by National Agricultural Library. United States, Maine.
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C.R. Hursh. Provided by National Agricultural Library. United States, Tennessee.
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L.F. Kellogg. Provided by National Agricultural Library. United States, Ohio, Franklin Co., Dublin.
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L.F. Kellogg. Provided by National Agricultural Library. United States, Ohio, Ohio State University.
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W.R. Mattoon. Provided by National Agricultural Library. United States, Kentucky.
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W.R. Mattoon. Provided by National Agricultural Library. United States, Maryland.
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W.R. Mattoon. Provided by National Agricultural Library. United States, Ohio, Clermont Co..
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E.S. Shipp. Provided by National Agricultural Library. United States, Virginia, George Washington National Forest.
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Edward H. Wollerman. Provided by National Agricultural Library. United States, Ohio, Warren Co., Franklin.
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Provided by National Agricultural Library. United States, Maryland.
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Britton, N.L., and A. Brown. Provided by Kentucky Native Plant Society.
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Provided by USDA Forest Service.
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Provided by USDA Forest Service.