Oncidium × illustre
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Cattleya × imperator
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Lycaste × imschootiana
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Odontoglossum × imschootianum
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Epidendrum × inauditum
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Catasetum × incarnatum
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Spiranthes × incurva
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Catasetum × inhotimensis
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Oncidium × inopinatum
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Cymbidium × insignigrinum
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Caladenia × intermedia
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Phalaenopsis × intermedia
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Prosthechea × intermedia
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Schomburgkia × intermedia
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Sobralia × intermedia
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Anacheilium × intermedium
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Ibidium × intermedium
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Catasetum × intermedium
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Cattleya × intricata
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Cattleya × irrorata
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Cattleya × isaacii
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Cattleya × isabellae
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Catasetum × issanensis
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Cattleya × itabapoanaensis