What is "odontocidium"

Odontocidium, abbreviated as Odcdm. in the horticultural trade, is the nothogenus comprising intergeneric hybrids of the two orchid genera Odontoglossum and Oncidium (Odm. x Onc.). Many orchids formerly classified as Colmanara have been reclassified as Odontocidium by the American Orchid Society.