Constantia is a genus of flowering plants from the orchid family, Orchidaceae.Barbosa Rodrigues, João. 1877. Genera et Species Orchidearum Novarum 1: 78. It contains 6 known species, all endemic to Brazil:Kew World Checklist of Selected Plant FamiliesForzza, R. C. 2010. Lista de espécies Flora do Brasil . Jardim Botânico do Rio de Janeiro, Rio de Janeiro
Constantia australis (Cogn.) Porto & Brade - Santa Catarina Constantia cipoensis Porto & Brade - Minas Gerais Constantia cristinae F.E.L.Miranda - Minas Gerais Constantia gutfreundiana Chiron & V.P.Castro - Minas Gerais Constantia microscopica F.E.L.Miranda - Minas Gerais Constantia rupestris Barb.Rodr. - Rio de Janeiro
See also List of Orchidaceae genera
References
Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. (1999). Genera Orchidacearum 1. Oxford Univ. Press. Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. (2001). Genera Orchidacearum 2. Oxford Univ. Press. Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. (2003). Genera Orchidacearum 3. Oxford Univ. Press Berg Pana, H. 2005. Handbuch der Orchideen-Namen. Dictionary of Orchid Names. Dizionario dei nomi delle orchidee. Ulmer, Stuttgart