| Lepanthes williamsii Salazar & Soto Arenas, 1992 |
| Lepanthes yunckeri Ames, 1938 |
| Lepanthes yuvilensis Catling, 1990 |
| Lepanthopsis (Cogn.) Ames, 1933 |
| Lepanthopsis floripecten (Rchb. f.) Ames, 1933 |
| Lepanthopsis unilateralis (Cogn.) Porto & Brade, 1935 |
| Leptorchis Thouars, 1809 |
| Leptorchis elata (Lindl.) Kuntze, 1891 |
| Leptorchis wendlandii (Rchb. f.) Kuntze, 1891 |
| Leucohyle Klotzsch, 1855 |
| Leucohyle subulata (Sw.) Schltr., 1914 |
| Leucohyle warscewiczii Klotzsch, 1863 |
| Lichterveldia Lem., 1855 |
| Lichterveldia lindleyi Lem., 1855 |
| Ligeophila Garay, 1977 |
| Ligeophila clavigera (Rchb. f.) Garay, 1977 |
| Limnorchis Rydb., 1900 |
| Limnorchis brevifolia (Greene) Rydb., 1901 |
| Limnorchis thurberi (A. Gray) Rydb., 1901 |
| Limodorum Boehm., 1760 |