Standleyanthus is a genus of 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.][ Tropicos, Standleyanthus R.M. King & H. Rob.]
The genus is named after US botanist Paul Carpenter Standley (1884-1963).[Williams, Louis O. "Paul Carpenter Standley". Taxon, vol 7. 1963.][ Washington Biologists' Field Club, USGS Patuxent Wildlife Research Center, Paul Carpenter Standley] The Latin specific epithet of triptychus is a compound word with 'tri' meaning three and 'ptychus' meaning plate.
- Species
The only known species is Standleyanthus triptychus, which is native to Costa Rica.[ Flann, C (ed) 2009+ Global Compositae Checklist ]