| Indigofera mucronata Lam., 1789 |
| Indigofera nana Rydb., 1923 |
| Indigofera nelsonii Rydb., 1923 |
| Indigofera ornithopodioides Schumach. & Thonn., 1827 |
| Indigofera palmeri S. Watson, 1887 |
| Indigofera pascuorum Benth., 1839 |
| Indigofera platycarpa Rose, 1903 |
| Indigofera pohliana Benth., 1839 |
| Indigofera pueblensis Rydb., 1923 |
| Indigofera purpusii Brandegee, 1919 |
| Indigofera rosei Rydb., 1923 |
| Indigofera sabulicola Benth., 1859 |
| Indigofera salmoniflora Rose, 1897 |
| Indigofera sinaloensis M. Sousa & Cruz Durán, 2017 |
| Indigofera sousae Rzed. & R. Grether, 2018 |
| Indigofera sphaerocarpa A. Gray, 1853 |
| Indigofera sphenoides Rydb., 1923 |
| Indigofera sphinctosperma Standl., 1919 |
| Indigofera spicata Forssk., 1775 |
| Indigofera suffruticosa Mill., 1768 |