| Lotus lathyroides (Durand & Hilg.) Greene, 1890 |
| Lotus longebracteatus Rydb., 1903 |
| Lotus maritimus L., 1753 |
| Lotus micranthus Benth., 1837 |
| Lotus mollis Greene, 1890 |
| Lotus neomexicanus Greene, 1890 |
| Lotus nevadensis (S. Watson) Greene, 1890 |
| Lotus nudatus (Greene) Greene, 1890 |
| Lotus nudiflorus (Nutt. ex Torr. & A. Gray) Greene, 1890 |
| Lotus nummularius (M.E. Jones) Tidestr., 1925 |
| Lotus nummulus Dayton, 1927 |
| Lotus nuttallianus Greene, 1890 |
| Lotus oblongifolius (Benth.) Greene, 1890 |
| Lotus ornithopus (Greene) Greene, 1890 |
| Lotus oroboides (Kunth) Ottley, 1939 |
| Lotus oroboides var. nanus Isely, 1978 |
| Lotus oroboides var. nummularius (M.E. Jones) Isely, 1978 |
| Lotus oroboides var. plebeius (Brandegee) Ottley, 1944 |
| Lotus oroboides var. ramulosus (M.E. Jones) Ottley, 1944 |
| Lotus pinnatus Hook., 1829 |