Tetrachyron is a genus of Mesoamerican plants in the tribe Heliantheae within the family Asteraceae.Schlechtendal, Diederich Franz Leonhard von . 1847. Linnaea 19: 744-746 in LatinTropicos, Tetrachyron Schltdl.Wussow, J. R. & L. E. Urbatsch. 1979 . A systematic study of the genus Tetrachyron (Asteraceae: Heliantheae). Systematic Botany 4(4): 297–318
SpeciesFlann, C (ed) 2009+ Global Compositae Checklist search for Tetrachyron The Plant List search for TetrachyronGarcía-Mendoza, A. J. & J. A. Meave. 2011. Diversidad Florística de Oaxaca: de Musgos a Angispermas 1–351. Universidad Nacional Autónoma de México, Ciudad Universitaria D.F.Strother, J. L. 1999. Compositae–Heliantheae s. l. 5: 1–232. In D.E. Breedlove (ed.) Flora of Chiapas. California Academy of Sciences, San Francisco Tetrachyron brandegeei (Greenm.) Wussow & Urbatsch - Oaxaca, Puebla Tetrachyron discolor (A.Gray) Wussow & Urbatsch - Hidalgo Tetrachyron grayi (Klatt) Wussow & Urbatsch - Tamaulipas, Nuevo León Tetrachyron manicatum Schltdl. - Oaxaca, Veracruz Tetrachyron orizabaensis (Klatt) Wussow & Urbatsch - Guatemala, Chiapas, Oaxaca, Puebla, Veracruz Tetrachyron torresii B.L.Turner - Oaxaca Tetrachyron websteri (Wussow & Urbatsch) B.L.Turner - Tamaulipas, Hidalgo, Querétaro
formerly included see Calea Tetrachyron oaxacana - Calea oaxacana
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