| Hymenolobus pubens A. Gray, 1852 |
| Hymenophysa CA. Mey., 1830 |
| Hymenophysa macrocarpa Franch., 1883 |
| Iberideae Webb Berthel., 1837 |
| Iberidella Boiss., 1841 |
| Iberis L., 1753 |
| Iberis umbellata L., 1753 |
| Iodanthus (Torr. & A. Gray) Steud., 1840 |
| Iodanthus acuminatus Rollins, 1942 |
| Iodanthus mexicanus Rollins, 1942 |
| Iodanthus petiolatus (Hemsl.) Rollins, 1942 |
| Iodanthus striatus M.E. Jones, 1929 |
| Irio (DC.) Fourr., 1868 |
| Iti Garn.-Jones & P. N. Johnson, 1988 |
| Kandis Adans., 1763 |
| Kardanoglyphos Schltdl., 1857 |
| Koniga R. Br., 1826 |
| Koniga maritima (L.) R. Br., 1826 |
| Kotschyella F.K. Mey., 1973 |
| Lagowskia Trautv., 1858 |