| Name | Eleocharis obtusa var. ellipsoidalis Fernald |
| Authorship | Fernald |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Eleocharis obtusa (Willdenow) Schultes |
| Citation | 1929 Rhodora 31: 218 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Eleocharis obtusa var. ellipsoidalis Fernald |
| Identification made in | [no date] (1), 1901 (1) |