| Lunaria annua L., 1753 |
| Lunaria rediviva L., 1753 |
| Lycocarpus O.E. Schulz, 1924 |
| Lyrocarpa Hook. & Harv., 1845 |
| Lyrocarpa coulteri Hook. & Harv., 1845 |
| Lyrocarpa coulteri var. apiculata Rollins, 1941 |
| Lyrocarpa coulteri var. coulteri Hook. & Harv., 1845 |
| Lyrocarpa coulteri var. palmeri (S. Watson) Rollins, 1941 |
| Lyrocarpa linearifolia Rollins, 1949 |
| Lyrocarpa palmeri S. Watson, 1876 |
| Lyrocarpa xanti Brandegee, 1889 |
| Machaerophorus Schltdl., 1857 |
| Malcolmia W.T. Aiton, 1812 |
| Malcolmia graeca Boiss. & Spruner, 1843 |
| Malcolmieae Al-Shehbaz & Warwick, 2007 |
| Mancoa Wedd., 1859 |
| Mancoa bracteata (S. Watson) Rollins, 1941 |
| Mancoa henricksonii Rollins, 1976 |
| Mancoa laxa Rollins, 1957 |
| Mancoa mexicana Gilg & Muschl., 1909 |