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Clarence A. Rechenthin. Provided by USDA NRCS East Texas PMC (ETPMC).
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G.A. Duthis. Provided by National Agricultural Library. United States, South Dakota.
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Norman L. Norris. Provided by National Agricultural Library. United States, California.
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W.H. Shaffer. Provided by National Agricultural Library. United States, New Mexico, Gila National Forest.
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W.H. Shaffer. Provided by National Agricultural Library. United States, New Mexico, Gila National Forest.
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Frank E. Wooldridge. Provided by National Agricultural Library. United States, California.
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Provided by National Agricultural Library. United States, Arizona.
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Tracey Slotta. Provided by ARS Systematic Botany and Mycology Laboratory. United States, Georgia, Chatham Co., Savannah.
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Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory. United States, Nevada.
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Patrick J. Alexander.
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W.C. Barnes. Provided by National Agricultural Library. United States, New Mexico.
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E.O. Wooton. Provided by National Agricultural Library. United States, New Mexico.
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Britton, N.L., and A. Brown. Provided by Kentucky Native Plant Society.
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Provided by USDI Bureau of Land Management (BLM). United States, Utah.
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Provided by USDI Bureau of Land Management (BLM). United States, Utah.
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Provided by USDI Bureau of Land Management (BLM). United States, Utah.
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Paul S. Bieler. Provided by National Agricultural Library. United States, Nevada.
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Tracey Slotta. Provided by ARS Systematic Botany and Mycology Laboratory. United States, Arizona, Cochise Co., Benson.
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Clarence A. Rechenthin. Provided by USDA NRCS East Texas PMC (ETPMC). United States, Texas, El Paso Co., El Paso, E. of city.
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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, Texas, El Paso Co., El Paso.
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Patrick J. Alexander.
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Patrick J. Alexander.
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Patrick J. Alexander.