| Lathyrus vestitus Nutt., 1838 |
| Lathyrus vestitus subsp. alefeldii (T.G. White) Broich, 1987 |
| Lathyrus vestitus subsp. laetiflorus (Greene) Broich, 1987 |
| Lathyrus vestitus var. alefeldii T.G. White) Isely, 1992 |
| Lathyrus whitei Kupicha, 1894 |
| Lecointea Ducke, 1922 |
| Lecointea amazonica Ducke, 1922 |
| Lennea Klotzsch, 1844 |
| Lennea brunnescens Standl., 1922 |
| Lennea melanocarpa (Schltdl.) Vatke ex Harms, 1923 |
| Lennea modesta (Standl. & Steyerm.) Standl. & Steyerm., 1946 |
| Lennea robinioides Klotzsch, 1842 |
| Lennea viridiflora Seem., 1853 |
| Lennea viridiflora var. novogaliciensis Lavin & M. Sousa, 1995 |
| Lennea viridiflora var. viridiflora Seem., 1853 |
| Lens Mill., 1754 |
| Lens culinaris Medik., 1787 |
| Lens esculenta Moench, 1794 |
| Lens lens (L.) Huth, 1893 |
| Leptoglottis DC., 1827 |