| Rhynchospora globosa (Kunth) Roem. & Schult., 1817 |
| Rhynchospora globosa var. globosa (Kunth) Roem. & Schult., 1817 |
| Rhynchospora globularis (Chapm.) Small, 1933 |
| Rhynchospora globularis var. recognita Gale, 1944 |
| Rhynchospora gracilenta A. Gray, 1836 |
| Rhynchospora hassleri C.B. Clarke, 1903 |
| Rhynchospora hirsuta (Vahl) Vahl, 1806 |
| Rhynchospora hoffmannii Boeckeler, 1873 |
| Rhynchospora holoschoenoides (Rich.) Herter, 1953 |
| Rhynchospora indianolensis Small, 1903 |
| Rhynchospora intermixta C. Wright, 1871 |
| Rhynchospora inundata (Oakes) Fernald, 1918 |
| Rhynchospora jaliscensis McVaugh, 1990 |
| Rhynchospora jelskiana Boeckeler, 1874 |
| Rhynchospora jubata Liebm., 1850 |
| Rhynchospora kunthii Nees ex Kunth, 1837 |
| Rhynchospora lechleri Steud. ex Boeckeler, 1873 |
| Rhynchospora leucocephala (Michx.) Boeckeler, 1869 |
| Rhynchospora lindeniana Griseb., 1866 |
| Rhynchospora lindeniana var. bahamensis (Britton) Gale, 1944 |