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Provided by USDA Forest Service.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory. United States, California.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, California, San Francisco Co., San Francisco, Strybing Arboretum.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, California, San Francisco Co., San Francisco.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, California, San Francisco Co., San Francisco.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, California, Tuolumne Co..
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, California, Santa Clara Co., Palo Alto.
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Gene Ahrens. Provided by National Agricultural Library. United States, California.
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A.G. Brenneis. Provided by National Agricultural Library. United States, California, Del Norte Co., Crescent City.
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Fred E. Dunham. Provided by National Agricultural Library. United States, California.
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A. Gaskill. Provided by National Agricultural Library. United States, California.
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Leland J. Prater. Provided by National Agricultural Library. United States, California.
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Leland J. Prater. Provided by National Agricultural Library. United States, California.
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Provided by National Agricultural Library.
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Provided by USDA Forest Service.
