| Chlorocyperus Rikli, 1895 |
| Chlorocyperus arsenei Palla, 1913 |
| Chlorocyperus articulatus (L.) Rikli, 1895 |
| Chlorocyperus compressus (L.) Palla, 1909 |
| Chlorocyperus erythrorhizos (Muhl.) Palla, 1903 |
| Chlorocyperus fendlerianus (Boeckeler) Palla, 1908 |
| Chlorocyperus inflexus (Muhl.) Palla, 1911 |
| Chlorocyperus laevigatus (L.) Palla, 1900 |
| Chlorocyperus melanostachyus (Kunth) Rikli, 1895 |
| Chlorocyperus michoacanensis Palla, 1913 |
| Chlorocyperus phymatodes (Muhl.) Palla, 1903 |
| Chlorocyperus rotundus (L.) Palla, 1903 |
| Cladieae Torr. ex Fenzl, 1836 |
| Cladium P. Browne, 1756 |
| Cladium californicum (S. Watson) O'Neill, 1941 |
| Cladium jamaicense Crantz, 1766 |
| Cladium mariscus (L.) Pohl, 1809 |
| Cladium mariscus subsp. californicum (S. Watson) Govaerts, 1999 |
| Cladium mariscus var. californicum S. Watson, 1880 |
| Clavula Dumort., 1827 |