Polystachya estrellensis Rchb.f.

POWO follows these authorities in synonymising this name:

• Chiron, G.R. & Bolsanello, R.X. (2013). Orchidées du Brésil. As orquídeas da Serra do Castelo (Espírito Santo, Brasil) 3: 1-389. Chiron. [Cited as Polystachya foliosa.]
• Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Polystachya concreta.]
• Mytnik-Ejsmont, J. (2011). A monograph of the subtribe Polystachyinae Schltr. (Orchidaceae): 1-400. Fundacja Rozwoju Uniwersytetu Gdanskiego. [Cited as Polystachya foliosa.]
• Schinini, A. (2010). Orquídeas nativas del Paraguay. Rojasiana 9: 1-316. [Cited as Polystachya concreta.]

This name was accepted following an alternative taxonomy by these authorities:

• Bocayuva Cunha, M.F. & Campostrini Forzza, R. (2007). Orchidaceae no Parque Natural Municipal da Prainha, RJ, Brasil. Acta Botanica Brasilica 21: 383-400. [Cited as Polystachya estrellensis.]
• Ferreira, A.W.C., Lima, M.I.S. & Pansarin, E.R. (2010). Orchidaceae na região central de São Paulo, Brasil. Rodriguésia; Revista do Instituto de Biologia Vegetal, Jardim Botânico e Estaçao Biologica do Itatiaya 61: 243-259. [Cited as Polystachya estrellensis.]
• Pansarin, E.R. & Pansarin, L.M. (2008). A família Orchidaceae na Serra do Japi, São Paulo, Brasil. Rodriguésia; Revista do Instituto de Biologia Vegetal, Jardim Botânico e Estaçao Biologica do Itatiaya 59: 87-98. [Cited as Polystachya estrellensis.]
• da Rocha Fiuza de Melo, M.M. & al. (eds.) (2007). Flora Fanerogâmica da Ilha do Cardoso 12: 1-289. Instituto de Botânica, São Paulo, Brasil. [Cited as Polystachya estrellensis.]