| Landersia Macfad., 1850 |
| Luffa Mill., 1754 |
| Luffa aegyptiaca Mill., 1768 |
| Luffa cylindrica (L.) Roem., 1846 |
| Luffa operculata (L.) Cogn., 1878 |
| Luffa operculata var. intermedia Cogn., 1895 |
| Luffa purgans (Mart.) Mart., 1843 |
| Luffa quinquefida (Hook. & Arn.) Seem., 1856 |
| Macrozanonia (Cogn.) Cogn., 1893 |
| Marah Kellogg, 1854 |
| Marah gilensis (Greene) Greene, 1910 |
| Marah guadalupensis (S. Watson) Greene, 1910 |
| Marah leptocarpa Greene, 1910 |
| Marah macrocarpa (Greene) Greene, 1910 |
| Marah macrocarpa var. macrocarpus (Greene) Dunn, 1913 |
| Marah macrocarpa var. micrantha (Dunn) Stocking, 1955 |
| Marah micrantha Dunn, 1913 |
| Marah minima Kellogg, 1863 |
| Maximowiczia Cogn., 1881 |
| Maximowiczia lindheimeri (A. Gray) Cogn., 1881 |