Callitriche hamulata is a species of flowering plant belonging to the family Plantaginaceae.

The light green, narrow leaves are up to 6 cm (2 in) long and 1-2mm wide, slightly broadening at the tip.

The leaves which can float on top of the water, are shorter and wider, they are also light brownish or pinkish green.

[4] It was then described by Wilhelm Daniel Joseph Koch before being widely published by Friedrich Traugott Kützing in 'Synopsis Florae Germanicae et Helveticae' Collection 246 in 1837.

[5] Callitriche hamulata is native to a wide area, which stretches from Greenland,[2][8] and Iceland,[3] through Europe to North-western Africa.