| Scirpus coloradoensis Britton, 1904 |
| Scirpus complanatus Retz., 1789 |
| Scirpus corymbosus L., 1756 |
| Scirpus cubensis Poepp. & Kunth, 1837 |
| Scirpus cubensis var. gracilis (Boeckeler) Beetle, 1944 |
| Scirpus cyperinus (L.) Kunth, 1837 |
| Scirpus cyperoides Hemsl., 1885 |
| Scirpus debilis Lam., 1791 |
| Scirpus dichotomus L., 1753 |
| Scirpus dictyospermus C. Wright, 1871 |
| Scirpus diphyllus Retz., 1789 |
| Scirpus domingensis Pers., 1805 |
| Scirpus elegans Kunth, 1815 |
| Scirpus elliottii Spreng., 1827 |
| Scirpus erectus Poir., 1805 |
| Scirpus eriophorum Michx., 1803 |
| Scirpus eriophorum var. cyperinus (L.) A. Gray, 1856 |
| Scirpus ferrugineus L., 1753 |
| Scirpus ferrugineus var. debilis (Lam.) Poir., 1804 |
| Scirpus filiculmis Schrad. ex Griseb., 1879 |