| Solanum arcuatum Sendtn., 1846 |
| Solanum arizonicum Parish, 1901 |
| Solanum armentalis J.L. Gentry & D'Arcy, 1977 |
| Solanum arrazolense J.M. Coult. & Donn. Sm., 1904 |
| Solanum asperolanatum Ruiz & Pav., 1799 |
| Solanum asperum Rich., 1792 |
| Solanum aviculare G. Forst., 1786 |
| Solanum azureum Fernald, 1900 |
| Solanum bahamense L., 1753 |
| Solanum belizense Lundell, 1942 |
| Solanum bicolor Willd. ex Roem. & Schult., 1819 |
| Solanum bicorne Dunal, 1852 |
| Solanum blodgettii Chapm., 1860 |
| Solanum boreale (A. Gray) Bitter, 1912 |
| Solanum brachistotrichum (Bitter) Rydb., 1924 |
| Solanum brachistotrichum var. ripicola (Bitter) Correll, 1952 |
| Solanum brachycarpum Correll, 1952 |
| Solanum brachystachys Dunal, 1852 |
| Solanum caavurana Vell., 1825 |
| Solanum calochromum S.F. Blake, 1922 |