Marsh dock Rumex palustris
Dock (Rumex spp.) Not eaten by cattle, this can give management problems. If too predominant, fields have to be 'topped' before it seeds. However, Teal especially use the seeds as a major food item
Folklore. A dock root tied across the thighs was thought to be a preventative for the Bailiff of the Marshes - the Ague, a form of malaria suffered by many locals - the last recorded case was in 1927.