| Macfadyena unguis-cati (L.) A.H. Gentry, 1973 |
| Mansoa DC., 1838 |
| Mansoa alliacea (Lam.) A.H. Gentry, 1980 |
| Mansoa hymenaea (DC.) A.H. Gentry, 1979 |
| Mansoa verrucifera (Schltdl.) A.H. Gentry, 1976 |
| Martinella Baill., 1888 |
| Martinella obovata (Kunth) Bureau & K. Schum., 1896 |
| Martinella verrucosa (Standl.) Standl., 1933 |
| Melloa Bureau, 1868 |
| Melloa fraxinifolia (Kunth) K. Schum. ex Schnee, 1947 |
| Melloa populifolia (DC.) Britton, 1893 |
| Melloa quadrivalvis (Jacq.) A.H. Gentry, 1973 |
| Mussatia Bureau, 1866 |
| Mussatia caudiculata (Standl.) Seibert, 1940 |
| Mussatia hyacinthina (Standl.) Sandwith, 1937 |
| Neotuerckheimia Donn. Sm., 1909 |
| Neotuerckheimia megalophylla Donn. Sm., 1909 |
| Onohualcoa Lundell, 1942 |
| Onohualcoa fissa (Loes.) Sandwith, 1947 |
| Onohualcoa helicocalyx (Kuntze) Sandwith, 1947 |