| Milleria perfoliata B.L. Turner, 1996 |
| Milleria quinqueflora L., 1753 |
| Milleria triflora Mill., 1768 |
| Millerieae Lindl., 1829 |
| Milleriinae Benth., 1873 |
| Mirasolia (Sch. Bip.) Benth., 1873 |
| Mirasolia diversifolia Hemsl., 1881 |
| Mixtecalia Redonda-Mart., García-Mend., & D. Sandoval, 2020 |
| Mixtecalia teitaensis Redonda-Mart., García-Mend. & D. Sandoval, 2020 |
| Mniodes (A. Gray) Benth., 1873 |
| Molina Ruiz & Pav., 1794 |
| Molina salicifolia Ruiz & Pav., 1798 |
| Monoptilon Torr. & A. Gray, 1844 |
| Monoptilon bellidiforme Torr. & A. Gray, 1845 |
| Monoptilon bellioides (A. Gray) H.M. Hall, 1907 |
| Monosis DC., 1834 |
| Monosis foliosa Benth., 1839 |
| Monosis salicifolia DC., 1836 |
| Monosis tarchonanthifolia DC., 1836 |
| Monosis tomentosa (Lex.) DC., 1836 |