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Provided by USDA Forest Service.
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Provided by USDA Forest Service.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, Massachusetts, Suffolk Co., Boston, Arnold Arboretum.
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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, Maryland.
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W.D. Brush. 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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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, Washington, King Co., Seattle.
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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.
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Charles A. Wellner. Provided by National Agricultural Library. United States, Idaho.
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Provided by National Agricultural Library.
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Provided by USDA Forest Service.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. Belgium, Tervuren.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, Washington, King Co., Seattle.
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Ray M. Filloon. Provided by National Agricultural Library. United States, Washington.
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Ray M. Filloon. Provided by National Agricultural Library. United States, Washington.
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Charles A. Wellner. Provided by National Agricultural Library. United States, Idaho.
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G.B. Sudworth. Provided by National Agricultural Library. United States, California.
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Provided by National Agricultural Library. United States, Oregon, Willamette National Forest.
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Provided by USDA Forest Service.
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