| Eleocharis jamesonii (Steud.) N.E. Br., 1921 |
| Eleocharis leptos (Steud.) Svenson, 1929 |
| Eleocharis leptos var. coloradoensis (Britton) Svenson, 1929 |
| Eleocharis liebmanniana Boeckeler, 1870 |
| Eleocharis lindheimeri (C.B. Clarke ex Britton) Svenson, 1929 |
| Eleocharis macrostachya Britton, 1903 |
| Eleocharis maculosa (Vahl) Roem. & Schult., 1817 |
| Eleocharis mamillata (H. Lindb.) H. Lindb., 1902 |
| Eleocharis mexicana Peyr., 1859 |
| Eleocharis microcarpa Torr., 1836 |
| Eleocharis minima Kunth, 1837 |
| Eleocharis minima var. bicolor (Chapm.) Svenson, 1937 |
| Eleocharis minima var. mexicensis H. Pfeiff., 1921 |
| Eleocharis minima var. minima Kunth, 1837 |
| Eleocharis minutiflora Boeckeler, 1886 |
| Eleocharis minutissima Britton, 1920 |
| Eleocharis mitrata (Griseb.) C.B. Clarke, 1900 |
| Eleocharis montana (Kunth) Roem. & Schult., 1817 |
| Eleocharis montana subsp. montevidensis (Kunth) Osten, 1931 |
| Eleocharis montana var. nodulosa (Roth) Svenson, 1944 |