| Stylonema (DC.) Kuntze, 1891 |
| Synthlipsis A. Gray, 1849 |
| Synthlipsis berlandieri A. Gray, 1858 |
| Synthlipsis densiflora Rollins, 1959 |
| Synthlipsis elata Rollins, 1959 |
| Synthlipsis greggii A. Gray, 1849 |
| Synthlipsis greggii var. greggii A. Gray, 1849 |
| Synthlipsis greggii var. hispidula Rollins, 1939 |
| Synthlipsis heterochroma S. Watson, 1882 |
| Syrenia Andrz. ex Besser., 1822 |
| Syreniopsis H.P. Fuchs, 1959 |
| Syrenopsis Jaub. & Spach, 1842 |
| Teruncius Lunell, 1916 |
| Teruncius arvensis (L.) Lunell, 1916 |
| Tetrapoma Turcz., 1836 |
| Thelypodieae Prantl, 1891 |
| Thelypodiopsis Rydb., 1907 |
| Thelypodiopsis arcuata (Rollins) Rollins, 1976 |
| Thelypodiopsis breedlovei Rollins, 1984 |
| Thelypodiopsis byei Rollins, 1982 |