The genus Brassia is a group of orchids characterized by their showy flowers with long, narrow petals. There are several synonyms for this genus, including Oncidium, Ada, and Odontoglossum. These synonyms reflect changes in taxonomy over time as orchid species have been reclassified based on genetic analysis. While members of the genus Brassia were originally classified within the broader genus Oncidium, they were later recognized as distinct and given their own genus name. Despite these changes, the unique beauty of Brassia orchids remains evident, making them a popular choice among orchid enthusiasts and collectors.