Cattleya Ovingdean
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Cattleya Owen Mygatt
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Cattleya Oweniae
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Cattleya Oweniana (=labiata)
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Cattleya Oweniana (1892)
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Cattleya Oxfordensis
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Cattleya Oxoniensis
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Cattleya Oxyana
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Cattleya Oxymoron
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Encyclia oxypetala
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Epidendrum oxysepalum
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Cattleya Oyama Charm
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Cattleya Oyama Dawn
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Cattleya Oyama Elegans
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Cattleya Oyama Pink Dawn
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Cattleya Oyama Splendor
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Cattleya Oyama Spring
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Cattleya Oyama Square
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Cattleya Ozark
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Cattleya P V Elusive Case
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Cattleya P. A. Bik
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Cattleya Pão de Açúcar
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Encyclia pabstii
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Epidendrum pabstii