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on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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prostrate trailing perennial on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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prostrate trailing perennial on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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prostrate trailing perennial on open exposure in roadside gravels of pale volcanic tufaceous rhyolite.
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Sabino Creek, Santa Catalina Mountains, Arizona. April 23, 2010
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Sabino Creek, Santa Catalina Mountains, Arizona. April 23, 2010
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Sabino Creek, Santa Catalina Mountains, Arizona. April 23, 2010
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