| Kuhnistera Lam., 1792 |
| Kuhnistera candida (Michx. ex Willd.) Kuntze, 1891 |
| Kuhnistera candida var. diffusa Rydb., 1895 |
| Kuhnistera candida var. multiflora (Nutt.) Rydb., 1895 |
| Kuhnistera candida var. occidentalis Rydb., 1895 |
| Kuhnistera emarginata (Torr. & A. Gray) Kunze, 1891 |
| Kuhnistera exilis (A. Gray) Kuntze, 1891 |
| Kuhnistera multiflora (Nutt.) A. Heller, 1894 |
| Kuhnistera obova (Moric.) Kunze, 1891 |
| Kuhnistera obovata (Torr. & A. Gray) A. Heller, 1896 |
| Kuhnistera occidentalis A. Heller, 1895 |
| 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 |