| Name | Callitriche oblongicarpa Fassett |
| Authorship | Fassett |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Callitriche Linnaeus |
| GUID | urn:lsid:ipni.org:names:139184-1 |
| Citation | 1951 Rhodora 53: 194 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Callitriche oblongicarpa Fassett |
| Identification made in | [no date] (1) |