Cattleya Lindl.
Cattleya Nysa
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Cattleya Nysiata
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Cattleya O-tas King
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Cattleya O. M. Tucker
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Cattleya O.M. Great Architect No. 4
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Cattleya O’Brieniana
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Cattleya O’Dell Morgan
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Cattleya OA’s High Noon
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Cattleya Oahu
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Cattleya Oakdale
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Cattleya Oakland
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Cattleya Oaklynn
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Cattleya Oakwood Alpha
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Cattleya Oakwood Beta
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Cattleya Oakwood Delta
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Cattleya Oakwood Gamma
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Cattleya Oakwoodiensis
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Cattleya Oar House
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Cattleya Oasis
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Cattleya Oasis
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Cattleya Obara Kun-Santoh
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Cattleya Oberon (1909)
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Cattleya Oberon (1913)
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Cattleya Obispo