| Ramirezella strobilophora (B.L. Rob.) Rose, 1903 |
| Ramirezella strobilophora var. buseri (Micheli) Maréchal, Mascherpa & Stainier, 1978 |
| Ramirezella strobilophora var. pubescens (Rose) Maréchal, Mascherpa & Stainier, 1978 |
| Rhadinocarpus Vogel, 1838 |
| Rhadinocarpus brasiliensis Vogel, 1838 |
| Rhynchosia Lour., 1790 |
| Rhynchosia amabilis Grear, 1978 |
| Rhynchosia americana (Mill.) Metz, 1934 |
| Rhynchosia angustifolia Engelm. ex A. Gray, 1852 |
| Rhynchosia apoloensis (Rusby) J.F. Macbr., 1925 |
| Rhynchosia aureo-guttata Andersson, 1853 |
| Rhynchosia australis Rose, 1903 |
| Rhynchosia bicolor Micheli, 1903 |
| Rhynchosia caribaea Chapm., 1860 |
| Rhynchosia crinita (Kunth) DC., 1825 |
| Rhynchosia cuernavacana Rose, 1905 |
| Rhynchosia delicatula O. Téllez & M. Sousa, 2000 |
| Rhynchosia difformis (Elliott) DC., 1825 |
| Rhynchosia discolor M. Martens & Galeotti, 1843 |
| Rhynchosia discolor var. discolor M. Martens & Galeotti, 1843 |