| Zinnia purpusii Brandegee, 1924 |
| Zinnia schiedeana (Less.) Olorode & A.M. Torres, 1970 |
| Zinnia tenuis (S. Watson) Strother, 1979 |
| Zinnia venusta (A.M. Torres) Olorode & A.M. Torres, 1970 |
| Zinnia violacea Cav., 1791 |
| Zinnia zamudiana Calderón & Rzed., 1996 |
| Zinnia zinnioides (Kunth) Olorode & A.M. Torres, 1971 |
| Zinniinae Benth. & Hook. f., 1873 |
| Zycona Kuntze, 1891 |
| Zycona oppositifolia Kuntze, 1891 |
| Zyzyxia Strother, 1991 |
| Zyzyxia lundellii (H. Rob.) Strother, 1991 |