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Opuntia austrina Small
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Opuntia calcicola Wherry
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Opuntia compressa var. austrina (Small) L.D. Benson
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Opuntia humifusa var. ammophila (Small) L.D. Benson
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Opuntia humifusa var. austrina (Small) Dress
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Opuntia impedata Small
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Opuntia rafinesquei Engelm.
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Flora of North America Editorial Committee, e. 2003. Magnoliophyta: Caryophyllidae, part 1. 4: i–xxiv, 1–559. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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