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Plants in semi-shaded Quercus oblongifolia understory on volcanic alluvial substrate at mid canyon below western rim of Barranca Sirupa with Zinnia peruviana, Adenophyllum porophyllum, Priva aspera
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an exceptionally large 3' single plant on eroded outcrop of rhyolitic tuff flow at roadside.
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semi-shaded Quercus oblongifolia understory on volcanic alluvial substrate at mid canyon below western rim of Barranca Sirupa with Zinnia peruviana, Adenophyllum porophyllum, Priva aspera
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Plants in semi-shaded Quercus oblongifolia understory on volcanic alluvial substrate at mid canyon below western rim of Barranca Sirupa with Zinnia peruviana, Adenophyllum porophyllum, Priva aspera
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flowers on an exceptionally large 3' single plant on eroded outcrop of rhyolitic tuff flow at roadside.
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Plants in semi-shaded Quercus oblongifolia understory on volcanic alluvial substrate at mid canyon below western rim of Barranca Sirupa with Zinnia peruviana, Adenophyllum porophyllum, Priva aspera
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flowers on an exceptionally large 3' single plant on eroded outcrop of rhyolitic tuff flow at roadside.
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Plants in semi-shaded Quercus oblongifolia understory on volcanic alluvial substrate at mid canyon below western rim of Barranca Sirupa with Zinnia peruviana, Adenophyllum porophyllum, Priva aspera
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on mixed igneous gravels & sand of arroyo bank
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on mixed igneous gravels & sand of arroyo bank
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on broad grassy roadside right-of-way in coarse gravelly calcareous/caliche soils of undulating plain.
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on silty gypseous clay and gravels on breaks of the Pecos River
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