| Metastelma schlechtendalii Decne., 1844 |
| Metastelma selerianum Schltr., 1906 |
| Metastelma sepium (Decne.) W.D. Stevens, 1988 |
| Metastelma stenomeres (Standl. & Steyerm.) W.D. Stevens, 1988 |
| Metastelma thalamosiphon W.D. Stevens, 2005 |
| Metastelma trichophyllum (L.O. Williams) W.D. Stevens, 1988 |
| Metastelma turneri Liede & Meve, 2004 |
| Metastelma watsonianum Standl., 1924 |
| Metastelma yucatanense W.D. Stevens, 2005 |
| Metastelmatinae Endl. ex Meisn., 1840 |
| Mexicania L.O. Alvarado & Lozada-Pérez, 2025 |
| Mexicania congesta (Decne.) L.O. Alvarado & Lozada-Pérez, 2025 |
| Mexicania guerrerensis L.O. Alvarado & Lozada-Pérez, 2025 |
| Microdactylon Brandegee, 1908 |
| Microdactylon cordatum Brandegee, 1908 |
| Microstelma Baill., 1890 |
| Microstelma chrysanthum (Greenm.) Morillo, 2023 |
| Microstelma jimenezii L.O. Alvarado, 2024 |
| Microstelma tenorioi L.O. Alvarado, 2024 |
| Mitozus Miers, 1878 |