Cattleya Lindl.
Cattleya Okay
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Cattleya Okayama Charm
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Cattleya Okayasu Hisae
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Cattleya Okeanos
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Cattleya Oki Moriyama
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Cattleya Okinawa
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Cattleya Olaf (1908)
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Cattleya Olaf (1918)
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Cattleya Olaf Harold
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Cattleya Old Forester
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Cattleya Old Ivory
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Cattleya Old Mill Spots
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Cattleya Old Sierra
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Cattleya Old Smoky
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Cattleya Old Whitey
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Cattleya Olenus (1904)
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Cattleya Olenus (1920)
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Cattleya Oleo Stella
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Cattleya Olephans
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Cattleya Oleta
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Cattleya Oleta Nichols
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Cattleya Olga
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Cattleya Olga Boniface
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Cattleya Olga Naoumoff