| Mimosopsis chapalensis Britton & Rose, 1928 |
| Mimosopsis desmanthocarpa (B.L. Rob.) Britton & Rose, 1928 |
| Mimosopsis durangensis Britton & Rose, 1928 |
| Mimosopsis filipes Britton & Rose, 1928 |
| Mimosopsis grahamii (A. Gray) Britton Rose, 1928 |
| Mimosopsis pringlei (S. Watson) Britton & Rose, 1986 |
| Mimosopsis rhodocarpa Britton & Rose, 1928 |
| Mimosopsis wherryana Britton, 1928 |
| Minkelersia M. Martens & Galeotti, 1843 |
| Minkelersia biflora Hemsl., 1880 |
| Minkelersia galactioides M. Martens & Galeotti, 1843 |
| Minkelersia multiflora Rose, 1897 |
| Minkelersia pauciflora Rose, 1897 |
| Minkelersia vulcanica Piper, 1926 |
| Mirbelieae Polhill, 1981 |
| Morongia Britton, 1894 |
| Morongia latidens Small, 1901 |
| Mucuna Adans., 1763 |
| Mucuna altissima (Jacq.) DC., 1825 |
| Mucuna andreana Micheli, 1892 |