| Dalea tephrosioides Griseb., 1866 |
| Dalea ternata Brandegee, 1909 |
| Dalea thouinii Schrank, 1817 |
| Dalea thyrsiflora A. Gray, 1861 |
| Dalea tinctoria Brandegee, 1889 |
| Dalea tolteca Barneby, 1977 |
| Dalea tomentosa (Cav.) Willd., 1802 |
| Dalea tomentosa var. mota Barneby, 1977 |
| Dalea tomentosa var. psoraleoides (Moric.) Barneby, 1977 |
| Dalea tomentosa var. tomentosa (Cav.) Willd., 1802 |
| Dalea transiens Barneby, 1977 |
| Dalea trifoliata Zucc., 1832 |
| Dalea trifoliolata Moric., 1833 |
| Dalea triphylla Sessé & Moc. ex G. Don, 1832 |
| Dalea trochilina Brandegee, 1892 |
| Dalea tuberculata Lag., 1816 |
| Dalea uncifera Schltdl. & Cham., 1830 |
| Dalea uniflora (Barneby) G.L. Nesom, 1992 |
| Dalea unifoliolata B.L. Rob. & Greenm., 1894 |
| Dalea urceolata Greene, 1906 |