| Jefea gnaphalioides (A. Gray) Strother, 1991 |
| Jefea lantanifolia (S. Schauer) Strother, 1991 |
| Jefea pringlei (Greenm.) Strother, 1991 |
| Jungia L. f., 1782 |
| Jungia alamanii DC., 1838 |
| Jungia ferruginea L. f., 1781 |
| Jungia guatemalensis Standl. & Steyerm., 1944 |
| Jungia humboldtii Less., 1830 |
| Jungia pringlei Greenm., 1907 |
| Kallias Cass., 1825 |
| Karelinia Less., 1834 |
| Keerlia DC., 1836 |
| Keerlia mexicana A. Gray, 1887 |
| Keerlia ramosa DC., 1836 |
| Keerlia skirrhobasis DC., 1836 |
| Kegelia Sch. Bip., 1848 |
| Kleinia Jacq., 1760 |
| Kleinia alata G. Mey., 1818 |
| Kleinia colorata Kunth, 1818 |
| Kleinia jorullensis Kunth, 1818 |