| Liatris punctata var. punctata Hook., 1833 |
| Lieberkuhna Cass., 1823 |
| Lieberkuhna spathulata (D. Don) DC., 1838 |
| Lindheimera A. Gray & Engl., 1847 |
| Lindheimera mexicana A. Gray, 1880 |
| Lindheimera texana A. Gray, 1847 |
| Linosyris Cass., 1825 |
| Linosyris carnosa A. Gray, 1853 |
| Linosyris coronopifolia A. Gray, 1852 |
| Linosyris drummondii Torr. & A. Gray, 1842 |
| Linosyris pluriflora Torr. & A. Gray, 1842 |
| Linosyris pulchella A. Gray, 1852 |
| Linosyris ramulosa (DC.) A. Gray, 1852 |
| Linosyris sonoriensis A. Gray, 1870 |
| Linosyris squamata A. Gray, 1870 |
| Linosyris texana (A. Gray) Torr. & A. Gray, 1842 |
| Linsecomia Buckley, 1862 |
| Lipochaeta DC., 1836 |
| Lipochaeta fasciculata DC., 1836 |
| Lipochaeta hastata Kellogg, 1863 |