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Provided by USDA Forest Service.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory. Germany, Erfurt.
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A.S. Harris. Provided by National Agricultural Library. United States, Alaska.
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Provided by National Agricultural Library.
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Provided by USDA Forest Service.
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Provided by USDA Forest Service.
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Provided by USDA Forest Service.
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Provided by USDA Forest Service.
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Provided by USDA Forest Service.
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Ray M. Filloon. Provided by National Agricultural Library. United States, California.
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Ray M. Filloon. Provided by National Agricultural Library. United States, Oregon.
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Provided by National Agricultural Library. United States, California.
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Provided by National Agricultural Library.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection.
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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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W.J. Allyn. Provided by National Agricultural Library. United States, Oregon.
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L.D. Bailey. Provided by National Agricultural Library. United States, Washington, Port Oxford.
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Ernest Lindsay. Provided by National Agricultural Library. United States, Oregon.
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Ernest Lindsay. Provided by National Agricultural Library. United States, Oregon.
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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.