| Stevia origanifolia Walp., 1840 |
| Stevia origanoides Kunth, 1818 |
| Stevia orizabensis B.L. Rob., 1928 |
| Stevia ovalis (B.L. Rob.) B.L. Rob., 1930 |
| Stevia ovata Willd., 1809 |
| Stevia ovata var. expansa Grashoff, 1974 |
| Stevia ovata var. ovata Willd., 1809 |
| Stevia ovata var. reglensis (Benth.) Grashoff, 1974 |
| Stevia ovata var. texana Grashoff, 1974 |
| Stevia palmeri A. Gray, 1886 |
| Stevia palmeri var. constricta Grashoff, 1974 |
| Stevia palmeri var. palmeri A. Gray, 1886 |
| Stevia paniculata Lag., 1816 |
| Stevia pedata Cav., 1797 |
| Stevia pelophila S.F. Blake, 1924 |
| Stevia perfoliata Cronquist, 1965 |
| Stevia phlebophylla A. Gray, 1887 |
| Stevia pilosa Lag., 1816 |
| Stevia plummerae A. Gray, 1882 |
| Stevia plummerae var. alba A. Gray, 1884 |