| Kuhnistera oligophylla (Torr.) A. Heller, 1896 |
| Lablab Adans., 1763 |
| Lablab purpureus (L.) Sweet, 1826 |
| Lachesiodendron P.G. Ribeiro, L.P. Queiroz & Luckow, 2018 |
| Lachesiodendron viridiflorum (Kunth) P.G. Ribeiro, L.P. Queiroz & Luckow, 2018 |
| Lackeya Fortunato, L.P. Queiroz & G.P. Lewis, 1996 |
| Lackeya viridiflora (Rose) L.P. Queiroz, 2020 |
| Larrea Ortega, 1797 |
| Larrea arida (Rose) Britton, 1930 |
| Larrea canescens (Fisher) Britton, 1930 |
| Larrea densiflora (Benth. ex A. Gray) Britton, 1930 |
| Larrea drepanocarpa (A. Gray) Britton, 1930 |
| Larrea drummondii (Torr. & A. Gray) Britton, 1930 |
| Larrea fruticosa (S. Watson) Britton, 1930 |
| Larrea gladiata (Benth. ex A. Gray) Britton, 1930 |
| Larrea glandulosa (Cav.) Britton, 1930 |
| Larrea glauca Ortega, 1797 |
| Larrea hidalgensis Britton, 1930 |
| Larrea humilis (M. Martens & Galeotti) Britton, 1930 |
| Larrea intricata (Brandegee) Britton, 1930 |