| Name | Callitriche palustris subsp. stagnalis (J. A. Scopoli) Schinz & Thellung |
| Authorship | (J. A. Scopoli) Schinz & Thellung |
| Rank | Subspecies |
| Placed in | Callitriche palustris Linnaeus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Callitriche palustris subsp. stagnalis (J. A. Scopoli) Schinz & Thellung |
| Identification made in | [no date] (1) |