The genus Madisonia (ma-dih-SON-ee-ah) is a new unispecific genus consisting of a species that used to belong to the genus Pleurothallis.  Madisonia is distinguished by a creeping rhizome; abbreviated ramicauls; an elongated peduncle; a deep-chinned, single flower; and a saccate attachment of the lip to the column foot.

    Madisonia kerrii (Braga) Luer