| Matricaria parthenium L., 1753 |
| Matricaria recutita L., 1753 |
| Matricariinae Willk., 1865 |
| Matudina R.M. King & H. Rob., 1973 |
| Matudina corvi (McVaugh) R.M. King & H. Rob., 1973 |
| Medranoa Urbatsch & R.P. Roberts, 2004 |
| Medranoa johnstonii (G.L. Nesom) G.L. Nesom, 2007 |
| Medranoa palmeri (A. Gray) G.L. Nesom, 2007 |
| Medranoa parrasana (S.F. Blake) Urbatsch & R.P. Roberts, 2004 |
| Medranoa pseudobaccharis (S.F. Blake) G.L. Nesom, 2007 |
| Medranoa purpusii (Brandegee) G.L. Nesom, 2007 |
| Megaliabum Rydb., 1927 |
| Megaliabum andrieuxii (DC.) Rydb., 1927 |
| Megaliabum pringlei (B.L. Rob. & Greenm.) Rydb., 1927 |
| Melampodiinae Less., 1830 |
| Melampodium L., 1753 |
| Melampodium achillioides (Less.) Hemsl., 1881 |
| Melampodium americanum L., 1753 |
| Melampodium appendiculatum B.L. Rob., 1901 |
| Melampodium arenicola B.L. Rob., 1901 |