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Provided by USDA Forest Service.
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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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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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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, Massachusetts, Middlesex Co., Weston.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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Provided by National Agricultural Library. United States, Maryland.
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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.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory.
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Ray M. Filloon. Provided by National Agricultural Library. United States, Oregon.
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E.L. Kolbe. Provided by National Agricultural Library. United States, Oregon.
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K.D. Swan. Provided by National Agricultural Library. United States, Idaho.
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K.D. Swan. Provided by National Agricultural Library. United States, Idaho.
