Nautonia is a group of plants in the family Apocynaceae first described as a genus in 1844.Decaisne, Joseph. 1844. Prodromus Systematis Naturalis Regni Vegetabilis 8: 509 in LatinTropicos, genus Nautonia It contains only one known species, Nautonia nummularia, native to Brazil.Forzza, R. C. 2010. Lista de espécies Flora do Brasil Jardim Botânico do Rio de Janeiro, Rio de Janeiro
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