| Lamprophragma O.E. Schulz, 1924 |
| Lamprophragma longifolium (Benth.) O.E. Schulz, 1924 |
| Leavenworthieae V.I. Dorof., 2004 |
| Lepia Desv., 1815 |
| Lepicochlea Rojas Acosta, 1918 |
| Lepidieae DC., 1821 |
| Lepidium L., 1753 |
| Lepidium acutidens (A. Gray) Howell, 1897 |
| Lepidium alyssoides A. Gray, 1849 |
| Lepidium alyssoides var. alyssoides A. Gray, 1849 |
| Lepidium alyssoides var. angustifolium (C.L. Hitchc.) Rollins, 1993 |
| Lepidium alyssoides var. eastwoodiae (Wooton) Rollins, 1993 |
| Lepidium alyssoides var. mexicanum Rollins, 1993 |
| Lepidium armoracia (Fisch.) C.A. Mey., 1843 |
| Lepidium arvense Mill., 1768 |
| Lepidium austrinum Small, 1903 |
| Lepidium austrinum var. orbiculare Thell., 1906 |
| Lepidium bernardinum Abrams, 1910 |
| Lepidium bipinnatifidum Desv., 1815 |
| Lepidium californicum Nutt. ex Torr. & A. Gray, 1838 |