Catasetum × macedoi
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Cypripedium × macranthos {nothof} alboroseum
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Cypripedium × macranthos {nothof} albostriatum
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Cypripedium × macranthos {nothof} flavoroseum
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Odontoglossum × macrospilum
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Odontoglossum × maderoi
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Catasetum × magnificum
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Cymbidium × malipoense
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Oncidium × mantinii
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Pleione × maoershanensis
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Bifrenaria × marciae
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Cattleya × marciae
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Hoffmannseggella × marciae
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Odontoglossum × mariottinanum
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Cohniella × marvraganii
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Trichocentrum × marvraganii
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Oncidium × marvreganii
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Cattleya × massaiana
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Lycaste × mathiasiae
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Cattleya × mathoniae
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Paphiopedilum × mattesii
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Paphiopedilum × maudiae
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Goodyera × maximo-velutina
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Goodyera × maximovelutina