Oncidium Sw.
Oncidium Bounty
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Oncidium Bourke Street
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Oncidium Bouvet
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Oncidium Boviell
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Oncidium brachyandrum
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Oncidium Brackenhurst
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Oncidium Brading
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Oncidium Bradshawiae (1903)
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Oncidium Bradshawiae (1907)
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Oncidium Braeckmani
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Oncidium Brahma
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Oncidium Bramber
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Oncidium Brandtiae
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Oncidium Brascinator
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Oncidium Breburne
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Oncidium Brehat
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Oncidium Brenda
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Oncidium Brenda (1929)
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Oncidium Brenda Eacott
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Oncidium Brenda June
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Oncidium Brennan Scott Barfield
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Oncidium Brennus
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Oncidium Brewii
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Oncidium Breworthii