Santosia is a genus of Brazilian plants in the tribe Eupatorieae within the family Asteraceae.D.J.N.Hind & H.E.Robinson. 2007. Tribe Eupatorieae In: The Families and Genera of Vascular Plants vol.VIII. (Joachim W.Kadereit & Charles Jeffrey, volume editors. Klaus Kubitzky, general editor). Springer-Verlag. Berlin, Heidelberg.King, Robert Merrill & Robinson, Harold Ernest. 1980. Phytologia 45: 463-465.
The genus was named for Brazilian biologist Talmon S. dos Santos.
Species The only known species is Santosia talmonii, native to the State of Bahia in eastern Brazil.The Plant List Santosia talmonii R.M.King & H.Rob.
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