| Name | Elatine williamsii Rydberg |
| Authorship | Rydberg |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Elatine Linnaeus |
| GUID | urn:lsid:ipni.org:names:324727-1 |
| Citation | 1900 Mem. New York Bot. Gard. 1: 260 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Elatine williamsii Rydberg |
| Identification made in | [no date] (1) |