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on limestone outcrop at roadside with Larrea, Ruellia, Mortonia scabrella, Bernardia obovata, Quercus hinckleyi.
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on limestone outcrop at roadside with Larrea, Ruellia, Mortonia scabrella, Bernardia obovata, Quercus hinckleyi.
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on limestone outcrop at roadside with Larrea, Ruellia, Mortonia scabrella, Bernardia obovata, Quercus hinckleyi.
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on limestone outcrop at roadside with Larrea, Ruellia, Mortonia scabrella, Bernardia obovata, Quercus hinckleyi.
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on limestone outcrop at roadside with Larrea, Ruellia, Mortonia scabrella, Bernardia obovata, Quercus hinckleyi.
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Plant on low ridge of interbedded gypsum and limestone along eastside breaks of the Pecos River. Note intricate branching habit of spine tipped branches.
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on silty gypseous clay and gravels on breaks of the Pecos River
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