Cattleya William of Woodlawn
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Rhyncholaeliocattleya William Oquendo
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Renanthopsis William Owens
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Cattleya William P. Roth
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Vanda William Paddock
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Cymbidium William Pettersson
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Paphiopedilum William Pitt
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Rhyncholaeliocattleya William Pitt
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Miltoniopsis William Pitt
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Cattleya William Pitt (1902)
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Cattleya William Pitt (1919)
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Cymbidium William Pownall
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Paphiopedilum William Price
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Paphiopedilum William Provine
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Vanda William Rasco
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Phalaenopsis William Ray
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Paphiopedilum William Rees
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Cattleya William Romanoff
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Rhyncholaeliocattleya William Rubinson
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Cattleya William Rupert
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Vanda William Sa Ning
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Phalaenopsis William Sanders
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Paphiopedilum William Sanders
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Cattleya William Sanders