| Neptunia plena (L.) Benth., 1841 |
| Neptunia pubescens Benth., 1841 |
| Neptunia pubescens var. microcarpa (Rose) Windler, 1966 |
| Neptunia pubescens var. pubescens Benth., 1841 |
| Neustanthus Benth., 1852 |
| Neustanthus phaseoloides (Roxb.) Benth., 1852 |
| Nicarago Britton & Rose, 1930 |
| Nicarago vesicaria (L.) Britton & Rose, 1930 |
| Nissolia Jacq., 1760 |
| Nissolia arborea Jacq., 1760 |
| Nissolia brasiliensis (Vogel) T.M. Moura & Fort.-Pérez, 2018 |
| Nissolia chiapensis Rudd, 1975 |
| Nissolia confertiflora S. Watson, 1886 |
| Nissolia confertiflora var. laxior B.L. Rob., 1894 |
| Nissolia diversifolia Rose, 1899 |
| Nissolia dodgei Rose, 1899 |
| Nissolia fruticosa Jacq., 1760 |
| Nissolia fruticosa var. fruticosa Jacq., 1760 |
| Nissolia gentryi Rudd, 1991 |
| Nissolia hintonii Sandwith, 1934 |