This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
The Great Spearwort, Sundew, Bog Pimpernel, Marsh Red Rattle (in part), Butterwort, Jointed Rush, Galingale, Common Spike Rush, Great Prickly Twig Rush, Hummock Sedge, Great Prickly Sedge rely upon their own special mechanisms for the dispersal of the seeds at no great distance from the plant.
Animals, especially birds, disperse the berries of the Cranberry and the Bog Myrtle. Water is responsible for the dispersal of the seeds of the Water Violet and the Bladderwort.