| Lycurus schaffneri (E. Fourn.) Mez, 1921 |
| Lycurus setosus (Nutt.) C. Reeder, 1985 |
| Macroblepharus Phil., 1858 |
| Macrochaeta Steud., 1854 |
| Macrostachya A. Rich., 1851 |
| Maillea Parl., 1842 |
| Maizilla Schltdl., 1850 |
| Malacurus Nevski, 1934 |
| Malacurus (Nevski) Tzelev, 1970 |
| Mandelorna Steud., 1854 |
| Manisuris L., 1767 |
| Manisuris altissima (Poir.) Hitchc., 1934 |
| Manisuris fasciculata (Lam.) Hitchc., 1915 |
| Manisuris guianensis Hitchc., 1922 |
| Manisuris porifera Hack., 1891 |
| Manisuris ramosa (E. Fourn.) Hitchc., 1927 |
| Mapira Adans., 1763 |
| Matrella Pers., 1805 |
| Matrella juncea Pers., 1805 |
| Matudacalamus F. Maek., 1961 |