| Eleocharis tenarum S. González & M. González, 2009 |
| Eleocharis tenuis (Willd.) Schult., 1824 |
| 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 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 |
| Eleogenus nodulosus (Roth) Nees, 1842 |
| Eleogenus ochreatus Nees, 1842 |
| Eleogenus schottianus Nees, 1842 |
| Eleogenus sellowianus (Kunth) Nees, 1842 |
| Eleogiton Link, 1827 |