| Dahlia dissecta var. sublignosa P.D. Sørensen, 1969 |
| Dahlia excelsa Benth., 1828 |
| Dahlia excelsa var. anemonaeflora Benth., 1827 [1828] |
| Dahlia foeniculifolia Sherff, 1951 |
| Dahlia gypsicola J. Reyes, Ortiz-Brunel & Art. Castro, 2024 |
| Dahlia hintonii Sherff, 1947 |
| Dahlia hjertingii H.V. Hansen & P.D. Sørensen, 2003 |
| Dahlia imperialis Roezl ex Ortgies, 1863 |
| Dahlia linearis Sherff, 1930 |
| Dahlia macdougallii Sherff, 1950 |
| Dahlia merckii Lehm., 1839 |
| Dahlia mixtecana J. Reyes, Islas & Art. Castro, 2019 |
| Dahlia mollis P.D. Sørensen, 1969 |
| Dahlia moorei Sherff, 1951 |
| Dahlia neglecta Saar, 2002 |
| Dahlia parvibracteata Saar & P.D. Sørensen, 2000 |
| Dahlia pinnata Cav., 1791 |
| Dahlia pteropoda Sherff, 1947 |
| Dahlia pubescens S. Watson, 1892 |
| Dahlia pugana Aarón Rodr. & Art. Castro, 2012 |