What is "tetrachyron"

Tetrachyron is a genus of Mexoamerican plants in the sunflower tribe within the daisy family.

1. Tetrachyron brandegeei (Greenm.) Wussow & Urbatsch - Oaxaca, Puebla
2. Tetrachyron discolor (A.Gray) Wussow & Urbatsch - Hidalgo
3. Tetrachyron grayi (Klatt) Wussow & Urbatsch - Tamaulipas, Nuevo León
4. Tetrachyron manicatum Schltdl. - Oaxaca, Veracruz
5. Tetrachyron orizabaensis (Klatt) Wussow & Urbatsch - Guatemala, Chiapas, Oaxaca, Puebla, Veracruz
6. Tetrachyron torresii B.L.Turner - Oaxaca
7. Tetrachyron websteri (Wussow & Urbatsch) B.L.Turner - Tamaulipas, Hidalgo, Querétaro

see Calea

• Tetrachyron oaxacana - Calea oaxacana