Rumex Obtusifolius is commonly known as bitter dock, broad-leaved dock, and blunt-leaved dock. It is a species of dock native to Europe but has been introduced to other parts of the world. This plant is a perennial herb that grows up to 1.5 meters in height. It has large, smooth, and dark-green leaves that are ovate in shape. The stems are also smooth and erect, with a reddish-brown color. The flowers are small and greenish-red, clustered in panicles. Other synonyms for Rumex Obtusifolius include blunt dock, butter dock, docken, and smair dock. Despite its bitter taste and astringent properties, Rumex Obtusifolius has been used for medicinal purposes for centuries.