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gravel pavement over clayish, gypseous silts above arroyo drainage. SYN:Psathyrotes scaposa
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on gypseous clays topped by silts and gravels with Pertyle vaseyi, Nama, Nerisyrenia
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on gypseous clays topped by silts and gravels with Pertyle vaseyi, Oligomeris linifolia, Nama, Nerisyrenia
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on gypseous clays topped by silts and gravels with Pertyle vaseyi, Oligomeris linifolia, Nama, Nerisyrenia
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on gypseous clays topped by silts and gravels with Pertyle vaseyi, Nama, Nerisyrenia
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on terrace slope of local volcanic gravels and mixed river alluvium just above wide arroyo drainage entering Rio Grande.
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