Madisonia

Madisonia, synonym Sansonia, is a genus of flowering plants in the family Orchidaceae, native to Jamaica, Trinidad and Tobago, and tropical South America. The genus was established by Carlyle A. Luer in 2004.

Species
, Plants of the World Online accepted the following species:
 * Madisonia articulata (Lindl.) Toscano & E.C.Smidt
 * Madisonia bradei (Schltr.) Toscano & E.C.Smidt
 * Madisonia brasilica (Luer & Toscano) Toscano & E.C.Smidt
 * Madisonia carrisii (Brade) Toscano & E.C.Smidt
 * Madisonia gomesii-ferreirae (Pabst) Toscano & E.C.Smidt
 * Madisonia ianthina (E.M.Pessoa & F.Barros) Toscano & E.C.Smidt
 * Madisonia kerrii (Braga) Luer
 * Madisonia spiculifera (Lindl.) Toscano & E.C.Smidt
 * Madisonia vandenbergii (Chiron) Toscano & E.C.Smidt