| Thevetia pinifolia (Standl. & Steyerm.) J.K. Williams, 1996 |
| Thevetia plumeriifolia Benth., 1845 |
| Thevetia thevetia (L.) Millsp., 1900 |
| Thevetia thevetioides (Kunth) K. Schum., 1895 |
| Thevetia yccotli A. DC., 1844 |
| Thevetiinae A. DC., 1844 |
| Thoreauea J.K. Williams, 2002 |
| Thoreauea aberrans J.F. Morales, 2005 |
| Thoreauea guerrerensis Diego & Lozada-Pérez, 2006 |
| Thoreauea paneroi J.K. Williams, 2002 |
| Tintinnabularia Woodson, 1936 |
| Tintinnabularia gratissima J.F. Morales, 1996 |
| Tintinnabularia mortonii Woodson, 1936 |
| Tonduzia Pittier, 1908 |
| Tonduzia longifolia (A. DC.) Markgr., 1924 |
| Tonduzia macrantha Woodson, 1937 |
| Tonduzia parvifolia Pittier, 1908 |
| Tonduzia pittieri Donn. Sm., 1910 |
| Tonduzia stenophylla (Donn. Sm.) Pittier, 1908 |
| Tonduziinae M.E. Endress, 2014 |