| Name | Callitriche schotsmaniana Lansdown & Hassemer |
| Authorship | Lansdown & Hassemer |
| Rank | Species |
| Placed in | Callitriche Linnaeus |
| Citation | 2021 Phytotaxa 105(1): 109 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Callitriche schotsmaniana Lansdown & Hassemer |
| Identification made in | [no date] (1), 2019 (1) |