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Britton, N.L., and A. Brown. Provided by Kentucky Native Plant Society.
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USDA NRCS. Provided by NRCS National Wetland Team.
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E.S. Shipp. Provided by National Agricultural Library. United States, New Mexico, Otero Co., Silver Spring Canyon.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory. China, Manchuria.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection.
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A.M. Sowder. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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Provided by National Agricultural Library. United States, Michigan, Kalamazoo Co..
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Provided by National Agricultural Library. United States, New York, Franklin Co..
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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W.D. Brush. Provided by National Agricultural Library. United States, Florida.
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W.D. Brush. Provided by National Agricultural Library. United States, Florida.
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W.D. Brush. Provided by National Agricultural Library. United States, Florida.
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Paul S. Carter. Provided by National Agricultural Library. United States, Mississippi, De Soto National Forest.
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W.R. Mattoon. Provided by National Agricultural Library. United States, Alabama.