| Diplotaxis DC., 1821 |
| Diplotaxis muralis (L.) DC., 1821 |
| Disaccanthus Greene, 1906 |
| Disaccanthus arizonicus (S. Watson) Greene, 1906 |
| Disaccanthus luteus Greene, 1906 |
| Disaccanthus mogollonicus Greene, 1906 |
| Disaccanthus validus Greene, 1906 |
| Discovium Raf., 1819 |
| Disynoma Raf., 1836 |
| Dithyrea Harv., 1845 |
| Dithyrea californica Harv., 1845 |
| Dithyrea californica var. clinata (J.F. Macbr. & Payson) Wiggins, 1964 |
| Dithyrea californica var. maritima Davidson, 1895 |
| Dithyrea clinata J.F. Macbr. & Payson, 1918 |
| Dithyrea maritima (Davidson) Davidson, 1923 |
| Dithyrea membranacea Payson, 1918 |
| Dithyrea wislizeni Engelm., 1848 |
| Dolichostylis Turcz., 1854 |
| Dollineria Saut., 1852 |
| Dondisia Rchb., 1828 |