| Eleocharis spiralis Boeckeler, 1870 |
| Eleocharis stolonifera (Nees) Boeckeler, 1870 |
| Eleocharis subcancellata C.B. Clarke, 1908 |
| Eleocharis sulcata Nees, 1834 |
| Eleocharis svensoniana S. González, 1985 |
| Eleocharis tenarum S. González & M. González, 2009 |
| Eleocharis tenuissima Boeckeler, 1870 |
| Eleocharis tiarata Gómez-Laur., 2003 |
| Eleocharis triflora Boeckeler, 1880 |
| Eleocharis truncata Schltdl., 1849 |
| Eleocharis tuerckheimii Boeckeler, 1888 |
| Eleocharis urceolata (Liebm.) Svenson, 1937 |
| Eleocharis villaricensis Maury ex Micheli, 1890 |
| Eleocharis wilkensii Schuyler, 1969 |
| Eleocharis wrightiana Boeckeler, 1888 |
| Eleocharis xyridiformis Fernald & Brackett, 1929 |
| Eleocharis yecorensis Roalson, 1999 |
| Eleogenus Nees, 1834 |
| Eleogenus atropurpureus (Retz.) Nees, 1834 |
| Eleogenus capitatus (Willd.) Nees, 1834 |