Cattleya Umpqua
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Cattleya Un-named grex
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Cattleya Una (1917)
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Cattleya Una (1921)
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Cattleya Una (1922)
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Cattleya Uncle Sheu Wan
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Cattleya Undine
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Cattleya Undine Aquinae
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Cattleya Undine Roseum
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Laelia undulata
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Cattleya Undulata
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Leptotes unicolor
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Cattleya Unicorn
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Epidendrum Unicorn Valley
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Barkeria uniflora
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Cattleya Unique
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Cattleya Unique Splendor
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Cattleya United Nations
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Cattleya United States
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Cattleya Unnamed grex
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Cattleya Unnamed grex
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Cattleya Unnamed hybrid
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Domingoa Unnamed hybrid
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Cattleya Upton Gem