Microspermum is a genus of Mexican flowering 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.Lagasca y Segura, Mariano. 1816. Genera et species plantarum Elench. Pl. page 25
SpeciesFlann, C (ed) 2009+ Global Compositae Checklist The Plant List search for MicrospermumTurner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 – Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272 Microspermum debile Benth. - Guerrero, Oaxaca, Chiapas, Michoacán, Jalisco Microspermum flaccidum Paul G.Wilson México State Microspermum gonzalezii Rzed. - Jalisco Microspermum gracillimum Rzed. - Jalisco Microspermum hintonii Rzed. - Guerrero Microspermum nummulariifolium Lag. - Guerrero, Jalisco, Oaxaca, México State, Michoacán Microspermum tenue Paul G.Wilson - Guerrero formerly included see Iltisia Piqueriopsis Microspermum michoacanum (R.M.King) B.L.Turner, synonym of Piqueriopsis michoacana R.M.King Microspermum repens (S.F.Blake) L.O.Williams, synonym of Iltisia repens S.F.Blake
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