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F. H. Miller. Provided by National Agricultural Library. United States, Arizona.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Utah.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Utah.
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Provided by National Agricultural Library. United States, Arizona.
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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. 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, Maryland.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Virginia, Wakefield.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Virginia, Wakefield.
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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.
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Provided by Smithsonian Institution, Department of Botany.
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Britton, N.L., and A. Brown. Provided by Kentucky Native Plant Society.
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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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W.D. Brush. Provided by National Agricultural Library. United States, Florida.
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Provided by National Agricultural Library. United States, South Carolina.