*Callitriche stagnalis
Leaves spathulate or ovate, blunt, not toothed. Styles 2–3 mm long. Mature fruit pale, not broader than long; the wing less than one third the width of the mericarp. Widespread. Introd. from N. hemisphere
Leaves spathulate or ovate, blunt, not toothed. Styles 2–3 mm long. Mature fruit pale, not broader than long; the wing less than one third the width of the mericarp. Widespread. Introd. from N. hemisphere