| Chaptalia runcinata Kunth, 1818 |
| Chaptalia seemannii (Sch. Bip.) Hemsl., 1881 |
| Chaptalia sonchifolia Greene, 1906 |
| Chaptalia spathulata (D. Don) Hemsl., 1881 |
| Chaptalia subcordata Greene, 1906 |
| Chaptalia texana Greene, 1906 |
| Chaptalia transiliens G.L. Nesom, 1984 |
| Cheilodiscus Triana, 1858 |
| Chihuahuana Urbatsch & R.P. Roberts, 2004 |
| Chihuahuana purpusii (Brandegee) Urbatsch & R.P. Roberts, 2004 |
| Chiliophyllum DC., 1836 |
| Chiliophyllum globosum (Ortega) DC., 1836 |
| Chionolaena DC., 1836 |
| Chionolaena aecidiocephala (Grierson) Anderb. & S.E. Freire, 1989 |
| Chionolaena concinna (A. Gray) Anderb. & S.E. Freire, 1989 |
| Chionolaena corymbosa Hemsl., 1879 |
| Chionolaena costaricensis (G.L. Nesom) G.L. Nesom, 2001 |
| Chionolaena cryptocephala (G.L. Nesom) G.L. Nesom, 2001 |
| Chionolaena durangensis (G.L. Nesom) G.L. Nesom, 2001 |
| Chionolaena eleagnoides Klatt, 1887 |