Ephedra
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Ephedra altissima
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Ephedra antisyphilitica
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Ephedra X arenicola
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Ephedra aspera
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Ephedra californica
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Ephedra coryi
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Ephedra cutleri
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Ephedra foeminea
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Ephedra funerea
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Ephedra X intermixta
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Ephedra nevadensis
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Ephedra pedunculata
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Ephedra torreyana
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Ephedra trifurca
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Ephedra viridis
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Last updated 12/15/2014.