Cattleya Augusta Rutledge
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Cattleya Auguste Rivière
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Cattleya Auguste Van Halme
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Cattleya Augustinian
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Cattleya Augusto Fernandes Neves
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Cattleya Auk
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Cattleya Aulange
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Cattleya Auld Acquaintance
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Cattleya Aumania
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Cattleya Aumonier Meuley
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Masdevallia Aunt Bev
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Cattleya aurantiaca
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Guarianthe aurantiaca
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Epidendrum aurantiacum
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Cattleya Aurata
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Cattleya aurea
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Chysis aurea
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Laelia aurea
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Scaphyglottis aurea
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Cattleya Aurealis
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Cattleya Aurelia
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Cattleya Aurelianensis
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Cattleya Auremona
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Cattleya Aurensis