| 1 | Callitriche | heterophylla | Two-headed Water-starwort | Plantain Family | Plantaginaceae | Magnoliopsida |
| 2 | Callitriche | palustris | Vernal Water-starwort | Plantain Family | Plantaginaceae | Magnoliopsida |
| 3 | Callitriche | stagnalis | Pond Water-starwort | Plantain Family | Plantaginaceae | Magnoliopsida |
| 4 | Callitriche | terrestris | Terrestrial Water-starwort | Plantain Family | Plantaginaceae | Magnoliopsida |