| Verbesina oligantha B.L. Rob., 1911 |
| Verbesina oligocephala I.M. Johnst., 1924 |
| Verbesina olivacea Klatt, 1884 |
| Verbesina olsenii B.L. Turner, 1985 |
| Verbesina oncophora B.L. Rob. & Seaton, 1893 |
| Verbesina oncophora var. oncophora B.L. Rob. & Seaton, 1893 |
| Verbesina oncophora var. subhamata McVaugh, 1972 |
| Verbesina oreophila Wooton & Standl., 1913 |
| Verbesina oreopola B.L. Rob. & Greenm., 1899 |
| Verbesina ortegae S.F. Blake, 1919 |
| Verbesina otophylla S.F. Blake, 1924 |
| Verbesina ovata (Cav.) A. Gray, 1883 |
| Verbesina ovatifolia A. Gray, 1883 |
| Verbesina oxylepis S.F. Blake, 1924 |
| Verbesina pachyphylla (Klatt) Wussow & Urbatsch, 1978 |
| Verbesina pallens Benth., 1853 |
| Verbesina palmeri S. Watson, 1889 |
| Verbesina paneroi B.L. Turner, 1990 |
| Verbesina pantoptera S.F. Blake, 1928 |
| Verbesina papasquiara Panero & Villaseñor, 1993 |