We continue to use the genus names per Sanders. There have been many changes in taxonomy accepted by the RHS and AOS where some species in this genus are now known as Gomesa (Gom.), Rossioglossum (Ros.) and Trichocentrum (Trt.) affecting intergenerics like Oncidesa (Oncsa.). In the hope of avoiding confusion, we also show the new genus names in parentheses where different from Sanders nomenclature.